IACS

ANNUAL REPORT 2017-2018

INDIAN ASSOCIATION FOR THE CULTIVATION OF SCIENCE From the Director’s Desk 004

The Past Glory 006

Distinguished Alumni and 008 CONTENTS Associates

The Laurels 012

The Key Committees 015

Executive Summary 020

Biological Chemistry 025

Centre for Advanced 035 Materials

Centre for Mathematical 040 Computational & Data Science

Director’s Research Unit 046

Energy Research Unit 050

Inorganic Chemistry 055

Materials Science 065

Organic Chemistry 085

Physical Chemistry 093

Polymer Science Unit 101

Raman Centre for Atomic, 110 Molecular and Optical Sciences Solid State Physics 113

Spectroscopy 125

Theoretical Physics 131

Emeritus Professors 144 & Senior Scientists

Technical Research Centre for 153 Molecules and Materials

Endowment Lectures 158 CONTENTS Lectures & Seminars 159 Meetings & Conferences 164

Colloquium Lecture Series 166

Patent Filed/Awarded 167

Inter-Institutional Collaboration 168

Ph.D. (Science) Degree Awarded 169 and other Academic Activities

Official Language Policy/RTI 181

Library 194

Central Scientific Services (CSS) 195

CCRES/Workshop 200

Non Academic Members 205

Annual Accounts 211

Auditor’s Report 219 From the Director’s Desk

It is my pleasure to present the Annual Report of the Indian Association for the Cultivation of Science (IACS), for the year 2017-18. IACS is a dynamic research and teaching institution embracing basic and translational studies devoted to cutting edge research in major areas of basic sciences, viz. physics, chemistry, biology and computational sciences. Our institute encompasses the gamut from basic to translational studies, and is enhanced through the close co-operation of basic scientists, applicational and translational scientists and technologists in our institute and adjacent institutions. The mission of the Institute as envisaged by the founder Dr. Mahendra Lal Sircar is to cultivate science in all its departments both with a view to its advancement by original research and to its varied applications to the arts and comforts of life. Our vision is to build a research education and training environment which is one of its kind that provides a unique platform where a researcher can pursue her/his dreams and aspirations in core sciences and also in emergent interdisciplinary areas. To be a world leader that is focused on delivering innovative research, IACS is recruiting highly-talented scientists from all around the world and admitting some of the brightest students in building their career here.

004 The year 2017-18 has been the year in which we reaffirmed and Our excellence in research has been bolstered by an renewed our image. This year, nearly 142 years since its inception, institutional effort to establish new alliances and collaborations the Governing Council has been pleased to be guiding IACS into with important partners all over the world, both from the the new chapter of its history. The sustained excellence in research public and private sectors. The creation of these ties has and teaching over the years has bestowed upon IACS, a Deemed- enabled us to forge a robust research and innovation network to-be-University status under de novo category conferred by the that will help the IACS to retain its position as a key centre of UGC and the MHRD, Govt. of India. This new image is another way reference in science research and teaching within the national of transmitting the values and mission of the Institute. The renewed and international community. There had been number of IACS branding resonates the leading-edge nature of our research visits, endowment lectures and colloquia that enriched with teaching, and brings out our new image to the society at large IACS and made the Visitor’s Program of the Institute a and the country. Thanks to the Governing Council, the Department landmark one. of Science and Technology, Government of India and Government The past year was marked by a number of accomplishments of for strongly advocating that IACS is considered as of our faculty colleagues. Dr. Arnab Sen has won the INSA a single unique organization, inclusive of its collection, facilities, Medal for the Young Scientists; Dr. Debashree Ghosh stakeholders, faculty, students and professional staff working fluidly received the Humboldt experienced researcher fellowship, across the Institute’s multipronged activities. The Baruipur land has Carl Frederich von Siemens Fellowship and has been invited been formally acquired paving the way for further expansion so as to be a Member of the Editorial Board of International Journal to fulfill the dreams of the founder, illustrious forerunners and all of Quantum Chemistry (Wiley); Professor Durga Basak has our mentors; and also to strengthen the IACS collection and plan won the MRSI Medal; Professor Parthasarathi Dastidar has for its exciting future. A new Academic Building has been built and become a Fellow of the Indian Academy of Sciences (FASc), is all set to have the UG and PG classes and labs conducted there Banaglore; Professors Satrajit Adhikari and Suhrit Ghosh won - thanks to the first ever CSR funding by TCG Lifecare Foundations the CRSI Bronze Medal, Professor Tapan Kanti Paine has been for funding a part of the construction cost. invited to be a Member of the Editorial Advisory Board of The Research Advisory Committee met after a while. The committee , Professor Tanusri Saha-Dasgupta has felt that this is the right direction along which IACS should move won the Dr. APJ Kalam HPC Award, 2018 and has been where the resources and wide experience of IACS could be utilized invited to be a Member of Nano-mission Apex Committee, for the societal benefits. The committee felt that IACS should re- DST and also a Member of Scientific Council of Indo-French orient its present academic program by restructuring the existing Centre for the Promotion of Advanced Research. Professor Departments/Units/Centres structure, where there are departments/ Sreebrata Goswami , in collaboration with a research group units/centres with one or two or a handful number of faculty of Singapore have jointly developed a new type of memory members, to a more cohesive discipline-based multi-faculty School device that promises to overcome limitations of current structure. This will not only ensure the critical number of faculties in digital storage and data processing systems as well as bolster each School, but also will enable optimum sharing of resources. progress towards artificial intelligence. Ten Patents are filed and In view of the above the committee proposed following Schools Professor Surajit Sinha has been Granted one US patent for his based on Discipline structure. Accordinghly IACS has reoriented invention on Morpholino-based Antisense Agents. itself by creating a School Structure starting with 6 Schools, viz. We believe this is only the beginning of many more exciting 1) School of Physical Sciences; 2) School of Chemical Sciences; developments to come at IACS. We remain committed to 3) School of Biological Sciences; 4) School of Mathematical and fostering groundbreaking, novel research, and invite you to Computational Sciences; 5) School of Materials Sciences; and learn more about our efforts by exploring the pages in this 6) School of Applied and Interdisciplinary Sciences. Report and also our website. With every step we take, we get a At IACS we believe the key to our success is our understanding bit closer to achieving significant impact through science ; our and engagement with each individual to provide transformative institutional strategy delineates a clear path to meet this goal. learning experiences. IACS sets ambitious targets to extend our As we work together to continue to take IACS forward, we success in learning and teaching, and to further develop our are deeply grateful to all of our current and former Members research, and internationalization. This annual report provides of the Governing Council, Finance Committee and Trustee clear evidence of achievement driven by our renewed activity Board, our alumni and parents, our faculty, our staff and, focus. We plan to strengthen our overall research and education particularly, to the funding authorities, without whose support we experience, skills development, learner engagement, learning would not be in as strong a position as we are today. and research resources and student support. We are committed Building on our strengths, we will cooperate and partner with to growing IACS’ teaching, research and innovation outcomes local authorities, schools and employers to help create a through increased research outputs of high quality. This report sustainable workforce of the future. In so doing, we can renew includes several examples of our improved research performance. the civic tradition on which the Institute was founded; and, as There had been 439 publications in peer-reviewed indexed journals a world-leading centre of excellence that is at the forefront of with an Average Impact Factor of 4.81, 39 Ph.D. Degrees were technology trends, we can add vision and value to this vital boost awarded despite the fact that a number of faculty superannuated to the region’s prosperity. Together we can usher in a new era that during the year, 01 US patent awarded and 11 patents filed during is more just, resilient, and inclusive of all. the year. Finally, I would like to acknowledge the dedication and This growth of high-quality research and teaching – together commitment of the Institute’s faculty, staff, and students, with administering and the student experience – have been our who continue to deliver acclaimed research and teaching priorities. All the students and staff members have been at the programs. I would also like to thank all of those who have heart of major improvements across campus, including better once again collaborated on the elaboration of this Annual research and teaching facilities and enhanced services to support Report. their well being; part of funding program 101.25 Crores, EMR – 28.23 Crores, CSR: 25 lakhs. Director, IACS 005 IACS is the oldest research institute in India. Dr. M.L. Sircar (1833-1904), a medical practitioner, founded IACS in 1876 to cultivate science in all departments. In the first 50 years, IACS was run only by donations received from individuals like Vidyasagar, Maharaja of In the initial period Father Lafonte took major steps in teaching Vijianagram, Kalikrishna Tagore and others. and building laboratories. J.C. Bose, FRS (1858-1937, inventor of microwave communication) and Asutosh Mukherjee (1864- 1924), first Indian to publish a Paper in 1881) were among first lecturers of IACS.

S.N. Bose, FRS (1894-1974) (discover of the Bose Statics) joined IACS as a National Professor in 1958. After Independence, M.N. Saha, FRS (1893-1956, discoverer of In 1933, Raman left IACS to join IISc, Saha Ionization Formula) played a Original research at IACS was started Bangalore as its first Indian Director. Before big role in making IACS as a full in 1907 by C.V. Raman. Raman leaving Calcutta, he appointed K.S. Krishnan, fledged research institute. With the came to Calcutta as Assistant Auditor FRS (1898-1961), co-discoverer of Raman help of Dr. B.C. Ray, CM/WB and General of Government of India and Effect) as the first MLS Professor. Pandit J.L. Nehru, PM, Saha built started working at IACS outside office the present campus at Jadavpur. hours and holidays. The Raman Effect Saha was the first Director of IACS was discovered in 1928 for which (1953-1956). Raman received the 1930 Nobel Prize in Physics. Raman was a Palit Professor of Physics of Calcutta University from 1917-33 but he carried out all his research at IACS. Raman discovered the small angle X-ray.

006 Professor Priyada Ranjan Ray (1958) was a renowned inorganic chemist who served as the Director of IACS. He is particularly well known for his seminal Professor Amal Kumar Raychaudhuri work on rhombic twist mechanism (1924-2005) was an acclaimed (Ray Dutt Twist), coordination chemistry theoretical physicist well known for stabilization of metal ions in unusual his seminal work on relativity and oxidation states and so on. cosmology. He worked as a research scholar at IACS (during 1940’s) and later took a research job at the Professor Kedareswar Banerjee (1900- institute. He is most well known for the 1975) was a world renowned X-ray Raychaudhuri equation which describes crystallographer and he served as the gravitational attraction for pressure- Director of IACS from 1959 until his free matter, showing the repulsive nature retirement in 1965. He was the founder of a positive cosmological constant, and of crystallography in India and proposed underlying the basic singularity theorem a new approach to the crystallographic phase problem, which heralded the extremely powerful direct methods of crystallography of the modern era.

Professor Suri Bhagavantam (1909-1989), impressed by the discoveries of Sir C. V. Raman, relocated to Calcutta and joined him in 1928 at IACS. After the Nobel Prize-winning discovery, Raman chose Bhagavantam as his collaborator to further his research work. Till the Professor Phanindra Chandra early decades of this century the IACS was the only Dutta (1912-1983) took over place in India where high level research in Physical the charge as the Head of the Sciences could be carried out. Prof. Bhagavantam Department of Organic Chemistry was among the many distinguished scientists of Professor Santi Ranjan Palit (1912- at IACS in 1953 and guided modern India who carried out research at IACS 1981) joined IACS in 1947 as a head the destiny of the Department to enrich the scientific research culture of India. In of the Department of Physical chemistry for more than two decades. He 1957, he became the Director of the Indian Institute and got actively engaged himself with introduced in our country for the of Science in Bangalore. He was then appointed all his vigour and enthusiasm in the first time the stereo controlled as the scientific adviser to the Government of India development plan of the Association. synthesis of organic molecules under the Ministry of Defence and then joined He made significant contributions in related to terpenoids and variety as the Director of the Defence Research and many areas of physical chemistry as well of other natural products. Development Organisation (DRDO) in 1962 after as polymer chemistry. His contributions the Indo-Chinese War. Professor Bhagawantam in the field of polymer chemistry are of wrote the well known book titled The Theory of lasting importance and he is justifiably Groups and its Physical Applications along with regarded as the father of polymer VenkataRayudu. This book was published in three research in India. editions and was translated into Russian. It is often said that a whole generation of spectroscopists are brought up on this book. He also wrote the book titled Scattering of Light and Raman Effect. 007 PADMABHUSAN (CIVIL HONOR IN INDIA): Prof. K.S.Krishnan(1898-1961,alumnus and former faculty Distinguished of IACS)

Alumni and PADMASHRI (CIVIL HONOR IN INDIA): Associates Prof. A.K.Barua (former faculty and Director of IACS) ALEXANDER VON HUMBOLDT RESEARCH AWARD

Prof. D.Mukherjee (former student, faculty and Director of IACS)

FELLOW OF THE WORLD ACADEMY OF SCIENCES (FTWAS)

NOBEL LAUREATE Prof. C.N.R. Rao (former Chairman of Review Committee of IACS and IACS Fellow) Sir C.V. Raman (1888–1970, former faculty of IACS) Prof. D.Mukherjee (former student, faculty and Director of IACS) BHARAT RATNA ( HIGHEST CIVIL HONOR IN INDIA) Prof.D.D.Sarma (former faculty of IACS) Sir C.V. Raman (1888–1970, former faculty of IACS) Prof. K.Bhattacharyya (former student, faculty and Director Prof. C.N.R. Rao (former Chairman of the Review Committee of IACS) of IACS and IACS Fellow) Prof.Santanu Bhattacharya (Director, IACS)

FELLOW OF THE ROYAL SOCIETY (FRS), LONDON: TWAS PRIZE Sir C.V. Raman (1888–1970, former faculty of IACS) Prof. C.N. R. Rao (former Chairman of Review Prof. Meghnad Saha (1893-1956, former faculty and Director Committee of IACS and IACS Fellow) of IACS) Prof. (former faculty of IACS) Sir J.C.Bose (1858-1937, former faculty of IACS) Prof. D.D.Sarma (former faculty of IACS) Prof. K.S.Krishnan (1898-1961, alumnus former faculty of IACS) Prof. K.Bhattacharyya (former student, faculty and Prof. S.N.Bose (1894-1974, former faculty of IACS) Director of IACS) Prof. A.P.Mitra (1927-2007, former Chairman of the IACS Prof. Santanu Bhattacharya (Director, IACS) Council) SHANTI SWARUP BHATNAGAR (SSB) PRIZE Prof. C.N.R. Rao (former Chairman of the Review Committee of IACS and IACS Fellow) Prof. K.S. Krishnan (former faculty of IACS)

Prof. M.M.Sharma (Chairman of the IACS Governing Prof. P.R. Ray (former Director of IACS) Council and IACS Fellow) Prof. S. Basu (former faculty of IACS) Prof.TV Ramakrishnan (IACS Fellow) Prof. U.R.Ghatak (former Director and faculty of IACS) Prof. Ajay Sood (IACS Fellow) Prof. C.K. Majumdar (former faculty of IACS) PADMAVIBHUSHAN (CIVIL HONOR IN INDIA): Prof. M M Sharma (IACS fellow and Chairman of the IACS Prof. C.N.R.Rao (former Chairman of the Review Committee Governing Council) of IACS and IACS Fellow) Prof. C.N.R. Rao (former Chairman of Review Committee of IACS and IACS Fellow)

008 Prof. Animesh Chakravorty (former faculty of IACS) Prof. B.C. Ranu (former student and faculty of IACS) Prof.M.Chowdhury (faculty of IACS) Prof. A. Ghosh (present faculty of IACS) Prof. D. Mukherjee (former student, faculty and Director of IACS) Prof. D.S. Ray (former student and faculty of IACS) Prof. M.Ray (former faculty of IACS) Prof. D.D. Sarma (former faculty of IACS) Prof. D.D. Sarma (former faculty of IACS) Prof. R.N. Mukherjee (former student of IACS)

Prof. K.Bhattacharyya (former student,faculty and Director of IACS) Prof. Akhil R. Chakravarty (former student of IACS)

Prof. Akhil R. Chakravarty (former student of IACS) Prof. (former student of IACS) Prof. A. Samanta (former student of IACS) Prof. D.S. Ray (former student and faculty of IACS) Prof. K. Nag (former faculty of IACS) Prof. Sourav Pal (former student of IACS) Prof. Subrata Ghosh (former faculty of IACS) Prof. Santanu Bhattacharya (Director, IACS) Prof. S. Goswami (present faculty of IACS) Prof. (former student of IACS) Prof. A.J. Pal (present faculty of IACS) Prof. (present faculty member, IACS) FELLOW OF THE INDIAN ACADEMY OF SCIENCES Prof. Krishnendu Sengupta (present faculty member, IACS) (FASc) Prof. P. S. Mukherjee (former student of IACS) Sir C.V. Raman (1888–1970, former faculty of IACS) FELLOW OF THE INDIAN NATIONAL SCIENCE Prof. K. Banerjee (1900–1975, former faculty of IACS) ACADEMY (FNA) Prof. S.Basu (1922–1992, former faculty of IACS) Sir C.V. Raman (1888–1970, former faculty of IACS) Prof. P.C.Dutta (1912-1971, former faculty of IACS) Prof. K.S. Krishnan (1898-1961, former faculty of IACS) Prof. U.R. Ghatak (1931-2005, former faculty and Director Prof. K.Banerjee (1900–1975, former faculty of IACS) of IACS) Prof. S.D.Chatterjee (1909-1995, former faculty of IACS) Prof. K.S. Krishnan (1898-1961, former faculty of IACS) Prof. S.R. Palit (1912-1981, former faculty of IACS) Prof. S.R. Palit (1912-1981, former faculty of IACS) Prof. D. Basu (1917-2005, former faculty and Director of IACS) Prof. Amal K. Raychaudhuri (1923-2005, former faculty Prof. S. Basu (1922–1992, former faculty of IACS) of IACS) Prof. P.C. Dutta (1912-1971, former faculty of IACS) Prof. M.Chowdhury (former faculty of IACS) Prof. U.R. Ghatak (1931-2005, former faculty and Director of IACS) N.R.Rao (former Chairman of Review Committee of Prof. Akshayananda Bose (1911-1997, former faculty of IACS) IACS and IACS Fellow)

Prof. Amal K.Raychaudhuri (1923-2005, former faculty of IACS) Prof. Animesh Chakravorty (former faculty of IACS)

Prof. Sushil K.Mukherjee (1914-2006, former president of IACS) Prof. R.N. Mukherjee (1999, former student of IACS)

Prof. Priyada RanjanRay (1888-1982, former Prof. and Director of IACS) Prof. Akhil R.Chakravarty (1995, former student of IACS)

Prof. M.Chowdhury (1937-2017, former faculty of IACS) Prof. Sourav Pal (1996, former student of IACS)

Prof. C.N.R. Rao (former Chairman of Review Committee of Prof. A. Samanta (2003, former student of IACS) IACS and IACS Fellow)

Prof. Animesh Chakravorty (former faculty of IACS) Prof. D. Mukherjee (former student, faculty and Director of IACS) Prof. K. Bhattacharyya (former student, faculty and Director of IACS) Prof. Santanu Bhattacharya (Director, IACS)

009 Prof. Samaresh Bhattacharya (2006, former student of IACS) Prof. D.D. Sarma (former faculty of IACS) Prof. M.Durga Prasad (2012, former student of IACS) Prof. Sourav Pal (former student of IACS)

Prof. D.D. Sarma (1993, former faculty of IACS) Prof. A. Samanta (former student of IACS)

Prof. Surajit Sengupta (2006, former faculty of IACS) Prof. D. Mukherjee (former student, faculty and Director of IACS)

Prof. Jayanta K Bhattacharjee (1993, former faculty of IACS) Prof. K. Bhattacharyya (former student, faculty and Director of IACS)

Prof. A.K. Barua (1987, former faculty and Director of IACS) Prof. D.S. Ray (former student and faculty of IACS) Prof. S.Sen Gupta (present faculty of IACS) Prof. G.K. Lahiri (2005, former student of IACS) Prof. B.N. Dev (present faculty of IACS) Prof. S.P. Bhattacharya (1993, former student and faculty of IACS) Prof. A. J. Pal (present faculty of IACS) Prof. D. Mukherjee (1987, former student, faculty and Director of IACS) Prof. A. Patra (present faculty of IACS)

Prof. Santanu Bhattacharya (2000, Director, IACS)

Prof. K. Bhattacharyya (1997, former student, faculty and G.D. BIRLA AWARD FOR SCIENTIFIC RESEARCH Director of IACS) Prof. D. D. Sarma (former faculty of IACS)

Prof. D.S. Ray (1995, former student and faculty of IACS) Prof. Santanu Bhattacharya (Director, IACS) Prof. B.C. Ranu (1995, former student and faculty of IACS) JC BOSE FELLOWSHIP, DST Prof. A. Ghosh (2009, former faculty of IACS) Prof. D. Mukherjee (former student, faculty and Director ofI ACS) Prof. K. Nag (1992, former faculty of IACS) Prof. D.D. Sarma (former faculty of IACS) Prof. Subrata Ghosh (1998, former faculty of IACS) Prof. K. Bhattacharyya (former student, faculty and Director Prof. S. Goswami (2004, present faculty of IACS) of IACS) Prof. A.J. Pal (2010, present faculty of IACS) Prof. R.N. Mukherjee (former student ofI ACS) Prof. A.K. Nandi (2009, present faculty of IACS) Prof. Santanu Bhattacharya(Director,IACS) Prof. B.N. Dev (2006, present faculty of IACS) Prof. Sourav Pal (former student of IACS) Prof. S. Sengupta (present faculty of IACS) Prof. A. Samanta (former student of IACS) Prof. T. Chakraborty (2015, present faculty of IACS) Prof. B.C. Ranu (former student and faculty of IACS) Prof. K. Sengupta (2012, present faculty of IACS) Prof. S. Goswami (present faculty of IACS) Prof. A. Patra (2016, present faculty of IACS) Prof. S. Ghosh (former student and faculty of IACS) Prof. A. Banerjee (2015, present faculty of IACS) Prof. A.Ghosh (formerfacultyofIACS) Prof. Pradyut Ghosh (2016, present faculty of IACS) Prof. A.J.Pal (present faculty of IACS) Prof. P.K. Das (2017, present faculty of IACS) Prof. D.S. Ray (present faculty of IACS) Prof. P.S. Dastidar (2018, present faculty of IACS) B. M. BIRLASCIENCE PRIZE FELLOW OF THE NATIONAL ACADEMY OF SCIENCES (FNASc) Prof. Santanu Bhattacharya (Director, IACS) Prof. M. N. Saha (1893-1956, former faculty, Director of IACS) Prof. G.K. Lahiri (former student of IACS) Prof. K. S. Krishnan (1898-1961, former faculty of IACS) Prof. Arindam Banerjee (present faculty of IACS) Prof. Amal K. Raychaudhuri (1923-2005,former faculty of IACS) Prof. P. K. Das (present faculty of IACS) Prof. C. N. R. Rao (former Chairman of Review Committee of IACS and IACS Fellow) Prof. Pradyut Ghosh (present faculty of IACS) Prof. B. P. Chatterjee (former faculty of IACS) Prof. Suhrit Ghosh (present faculty of IACS) Prof. Jayanta K Bhattacharjee (former faculty of IACS)

010 SWARNAJAYANTI FELLOWSHIP, DST ASSOCIATES OF THE INDIAN ACADEMY OF SCIENCES Prof. Santanu Bhattacharya (Director, IACS) Prof. T. Jana (former student of IACS) Prof. Narayan Pradhan (present faculty of IACS) Dr. S. Malik (former student of IACS) Prof. Pradyut Ghosh (present faculty of IACS) Prof. Suhrit Ghosh (present faculty of IACS) Prof. S.P. Mukherjee (former student of IACS) Dr. A. Dey (present faculty of IACS) Prof. Suhrit Ghosh (present faculty of IACS)

Dr. J. Dash (present faculty of IACS)

INSA MEDAL FOR YOUNG SCIENTIST Prof. M. Ray (former faculty of IACS) Prof. B.K. Chaudhuri (former faculty of IACS) Prof. Sourav Pal (former student of IACS) Prof. D. Datta (former student and faculty of IACS) Prof. T. Jana (former student of IACS) Prof. T.K. Paine (present facultyof IACS) Dr. Saptarshi Mukherjee (former student of IACS) Dr. Pratik Sen (former student of IACS)

011 FACULTY MEMBERS

Arnab Sen Debashree Ghosh Durga Basak Parthasarathi Dastidar

INSA Medal Humboldt experienced researcher MRSI Medal Fellow of the Indian Academy of for Young Scientist fellowship; Carl Frederich von Sciences (FASc), Banaglore. Siemens Fellowship; Member of Editorial Board of International Journal of Quantum Chemistry (Wiley), by Invitation.

Sreebrata Goswami Suhrit Ghosh Tapan Kanti Paine Tanusri Saha-Dasgupta

Scientists in Calcutta and Singapore CRSI Bronze Medal Member of Editorial Advisory Dr. APJ Kalam HPC Awrd, 2018; have jointly developed a new type Board of Inorganic Chemistry. Member of Nano-mission Apex of memory device that promises to Committee, DST; Member of overcome limitations of current digital Scientific Council of Indo-French storage and data processing systems Centre for the Promotion of as well as bolster progress towards artificial intelligence. Advanced Research

Satrajit Adhikari

CRSI Bronze Medal

012 Research Fellows

Abhijit Bera Arijit Ghosh Amrita Sikdar Goutam Ghosh Asutosh Mukherjee Best Poster Award, Best Poster Award, Best Poster Award, Best Thesis Award, IACS, FIMB, IISER-; ILS, SCBFM-2018, IISER- SCBFM-2018, IISER-Kolkata Kolkata Bhubaneshwar and IABS, Kolkata IACS, Kolkata.

Jayanta Kundu Laxmikanta Karmakar Mandira Nandi Nibedita Nandi Best Poster Award in Clinical Best Oral Award in RSC Advances Poster Prize, Best Poster Award for Sciences and Patients based ICN:3I-2017, IIT Roorkee Conference on MTIC ChemComm Poster Research Category, AAPI Presentation, CBS Global Healthcare Summit.

013 Research Fellows

Pronay Makal Rajesh Bera Sandip Munshi Sk. Amanullah Best Poster Award in MRSI Young Scientist Award ACS OMEGA Best Poster ACS OMEGA Best Poster ICN:3I-2017, IIT Roorkee (Oral Presentation), IIES, Award, Conference on MTIC Award, Conference on MTIC Shibpur

Soumyo Chatterjee Sudipto Bera Surajit Bose Sumanta Chakraborty JSPS-Hope Fellow, Japan Nanoscale Horizons (RSC) Best oral paper presenter VV Narlikar Best Thesis Award, Society for the Promotion of Poster Award, Bengaluru award at URSI GASS, IAGRG, India Science; Newton-Bhabha Montreal, Canada. Ph.D. Placement 2017-18, British Council DST, GOI.

Tamal Kanti Ghosh Best Poster Award, Conference on MTIC

014

Organisational Chart

Societal Component Institute Component

General Body Governing Council

Finance Committee

Director

Deans & Associate Deans

Registrar Head of the Academic Services Dept.,/ Unit/ Centre

Engineering CSS IJP Library Centre for Workshop Computer Research Education & Services

Establishment General Administration Accounts

In accordance with DST guideline (letter no. AI/001/97, dated 01.08.1997) the administrative and financial set up of the institute is as following :

Organisational Chart

Professor M M Sharma, FRS, (Chairman) Professor L.S. Shashidhara (Nominated by the Department of Science & Technology, IISER-Pune Government of India) (Nominated by INSA for three terms) Secretary to the Government of India or his nominee, DST Principal Secretary to the Government of West Bengal, Department of Higher Education Professor Santanu Bhattacharya, Director, IACS Dr. Ayan Datta Shri J B Mohapatra, Financial Advisor to the Government of (Elected from amongst Academic staff Association for one term) India, DST Shri Prabir Manna from amongst the Administrative& Technical Professor Mahan MJ Staff for one term TIFR, Mumbai Smt Debdatta Halder (Nominated by the Council of IACS for three terms) (Elected from amongst the Research Fellows & Associates for Professor Amit Basak one term) IIT, Kharagpur Registrar – Non Member Secretary (Nominated by the DST, Government of India for three terms) Director, Bose Institute (permanent invitee member) Professor K.N. Pathak Ex-VC, Chandigarh University Director, SNBNCBS (permanent invitee member) (Nominated by the DST, Government of India for three terms)

Professor Sudhir K. Jain, Director IIT-Gandhinagar (Nominated by the Council of IACS for three terms)

016 Finance Committee

Chairman, Governing Council, IACS Professor Anandadeb Mukherjee, Trustee, nominated by the Council Director, IACS Principal Accountant General, Govt. of West Bengal One Representative of Ministry of Science of Technology, GOI Registrar, IACS, Non-member Secretary

Management Committee

Professor MM Sharma, FRS (President) Professor Indrani Bose Professor Santanu Bhattacharya, Director Professor Debasish Bhattacharya (Vice President, Ex-Officio) Professor Kamal Bhattacharyya Professor Alok K Mukherjee (Vice President) Professor Subir Ghosh Professor Amitava Dutta (Hony. Secretary) Dr. Bhupati Chakraborty Professor Sanjib Ghosh (Hony. Treasurer) Dr. Chinmoy Kumar Ghosh Professor Dhiranjan Roy Shri. Amit K. Majumdar, Executive Secretary

Research Advisory Committee (RAC)

Professor K N Ganesh, Chairman Professor Rohini M Godbole Professor E V Sampath kumaran Professor DilipKanhere Professor Partha Pratim Chakrabarti Professor Puspendu K Das Professor Sourav Pal Professor C P Rao Professor Debi P Sarkar Professor Subrata Sinha Professor Kapil Hari Paranjape

Trustee

Professor Milan Sanyal Professor Ananda Deb Mukherjee Professor R N Mukherjee Professor Sabyasachi Sarkar

Annual Report and Publication Cell

Professor K Sengupta -Chairman Prof. T.K. Paine – Member Professor S. Majumdar– Member Dr. S. Ghosh De – Member Professor P.S. Dastidar - Member Prof. A. Paul - Member Prof. R. Mukhopadhyay – Member Smt. S. Saha – Member Prof. S. Ghosh – Member Smt. D. Chakraborty – Member Prof. S. Ray – Member Dr. G. Paul – Member Shri A. Basak - Secretary

017 Report of the visit of the Research Advisory Committee

IACS has been in existence for over one hundred and forty one years with exceptional record of scientific creativity unmatched by any other institution in the country. IACS has acquired the characteristics of a university as demonstrated by the depth and diversity of its programmes of study, proven contribution to innovations in teaching and verifiable high quality of research output of IACS as evident from the regular and periodic reviews annual reports and assessments made by the national nodal agency, DST.

At present, IACS represents the largest pool of scientific talents within a single research institution under the Department of Science and Technology. With over 70 faculty members spread over Physics, Chemistry, Biology Materials and Computational & Mathematical Science, it is rated as one of the best research institutions in India. It has been nationally recognised to be an institution with a very high scientific yield per unit of investment in it. It boasts the largest number of awards, honours and decorations for its faculty members among all other research institutions of its kind; for example, it has one of the largest It is in this spirit the Governing Council of IACS in its meeting number of members of various scientific academies within held on 28th January 2018 constituted a new Research India and boasts of an unusually high concentration of Advisory Committee (RAC) with the following composition. scientists with high citations and visibility through a higher The last RAC was formed in 2007 which submitted its final rate of publications in some of the best international journals. report in 2011. Close interaction between various faculty members, cutting across the divide along the disciplines and thereby leading to Professor K N Ganesh, Chairman synergy, is another unique strength of this place. This last factor Professor Partha Pratim Chakraborty leads to highly inter-disciplinary programs being sustained at Professor Pushpendu K Das IACS very effectively. Professor Rohini Godbole Professor Dilip G Kanhere IACS had been sustaining its performance remarkably well in Professor Sourav Pal terms of the number of PhDs produced and is now running Professor Kapil Hari Paranjpae Integrated PhD programs in the major streams of fundamental Professor C Pulla Rao science, viz. Physics (with ), Chemistry Professor E V Sampathkumaran (with Calcutta University) and Biology (with IIT-Kharagpur), Professor Debi P Sarkar over and above the regular PhD coursework in these and Professor Subrata Sinha other interdisciplinary and emerging areas. The Governing Council of IACS made teaching mandatory for the faculty. The first meeting of the Research Advisory Committee (RAC) IACS has already expanded the lab and hostel facilities for of IACS was held on March 4 – 5, 2018, in order to review accommodating newcomers to the extent possible in its the performance and viability of the various Departments, present campus. IACS is on verge of greater expansion by Units and Centres of IACS during the last five years, and to starting its 2nd campus at the newly acquired land at Baruipur provide recommendations on the future academic program allotted by the Government of West Bengal. of IACS, that may enable IACS to maintain its performance and at the same time cater more to the needs of the society IACS presently has eight departments (Biological Chemistry; as mandated by the Government and cast its present structure Inorganic Chemistry; Materials Science;, Organic Chemistry that fits with the requirement of a university model that IACS and Physical Chemistry; Solid State Physics; Spectroscopy; is contemplating for without compromising its research Theoretical Physics) three Units (Polymer Science Unit, Energy excellence and academic performance. Research Unit and Director’s Research Unit) and three Centres (Centre for Advanced Materials; Raman Centre for Atomic, The meeting started with a presentation by the Director, Molecular & Optical Science and Centre for Computational, IACS. This was followed by presentations made by Head of Mathematical and Data Science). the various Departments, Units and Centres. The committee members applauded the excellent performance of the various To keep pace with demands of time, to diversify research Departments/Units/Centres during the last five years. The activities and to consolidate its achievements and provide committee wholeheartedly supported the recent Governing platforms where scientists, educationalists and technologists Council mandated initiatives made by IACS to become a can interact, exchange ideas and pursue teaching and Deemed University under the de novo category, which had research across formal boundaries of departments and units, been the dream of the founder, Dr. Mahendra Lal Sircar. IACS is undergoing Academic Reforms. New research and teaching initiatives have been taken. In its growth path, IACS The Report of the RAC was approve by the Governing Council is now facing constraints in terms of the available resources. in its meeting held on 8th May 2018 and subsequently IACS The present departmental structure has been there for a long has switched over to its new School Structure from 10th May time. The RAC felt that a relook at the entire organization may 2018. Since the Committee has been constituted for a 3-year be necessary to reflect the realities of the day. term, the Committee in its Report has submitted its resolution to meet again to review the reforms being proposed and make further recommendations, as and when needed. 018 Deemed University Status for IACS and Visit of the UGC Delegation

For years, the main objective of IACS has been to provide opportunities for talented young students to carry out research projects and also furnish facilities for the human resource development in the country. The Governing Council of IACS felt that getting a Deemed University status would certainly further this aim and objectives as enshrined in the original mandate of the Institute. The excellent experimental facilities existing in the Institute and also the faculty expertise available at the Institute would be great asset in furthering training and development of scientific manpower at young age and in science capacity building for the country. The institute has some of the most sophisticated and state-of-the-art instrumentational facilities comparable to the best elsewhere in world. The Institute houses a modern Computer Centre, a large Workshop and very rich Library and archival resources. The campus is located in one of the most popular educational and commercial hubs in the Southern part of Kolkata. It has all the modern amenities and installations including CCTV, ERP, modern classrooms, e-Network, video classrooms, ATM, canteen, guesthouses, etc. Being a central government funded Institute, it conforms to all the national policies like reservation, anti-ragging, ICC, etc. IACS has been depending on many other universities and institutions for awarding degrees to its students. Since IACS had to depend on multiple universities or institutes towards this end, and each such institute/university follows their own curricula, syllabus and academic calendar, it became most inconvenient for the students to follow a uniform and synchronous structure, while working towards their degree from the same institution, i.e. IACS. For furthering its goal, it became essential that IACS strives to acquire an academic freedom, which would allow it to design its own flexible and de novo curricula so that its full potential and strength may be utilized effectively in the teaching program. The academic fraternity at IACS felt that the deemed university status for IACS will make this institution among the unique places where students will get exposure to research oriented teaching right from the beginning – a model that has successfully been applied in all the renowned and select centres of excellence all over the world. On 14.8.2015, Academic Board first recommended getting a Deemed University status for IACS, as the students expressed their concern when they were having difficulty to do their registration in other universities/institutions. Subsequent to this, Governing Council in its meeting held on 16.8.2015 made teaching mandatory. On 29th May 2017, IACS Council directed to submit its application to UGC. Accordingly the application was sent to MHRD on 22.9.2017. On 6.11.2017, Director was called by the MHRD to meet an expert committee. On 22.12.2017, IACS received a letter that a UGC delegation would visit IACS to interact with all the stakeholders and inspect the facilities available. The UGC delegation visited IACS on 26-27 December 2017. The delegation met the faculty, students and the staff members of IACS. IACS conveyed to the delegation that the institute is committed to nurture young talents in the emerging areas that are of significance to society and will lead to employment generation. IACS proposed curricula and a teaching model that are unique in the country and as such IACS sought to be granted the status of a Deemed University under the de novo category.

019

To quote the Founder, the great visionary, Dr. Mahendra Lal Sircar “The objective of the Association is to enable the Natives of India to cultivate Science in all its departments with a view to its advancement by original research and with a view to its varied application to the arts and comforts of life.” Even today, IACS is dedicated to the realization of the undying dream of its founder and his compatriots. The institute pursues relentlessly theoretical and experimental research in fundamental and basic sciences with emphasis on translating its discoveries into technology wherever possible and train and prepare the younger generation to handle the challenges of the future, be it in EXECUTIVE the emerging areas of science or technology. IACS has currently 8 departments (Materials Science, Solid State SUMMARY Physics, Spectroscopy, Theoretical Physics, Biological Chemistry, Inorganic Chemistry, Organic Chemistry, Physical Chemistry), 3 units (Energy Research, Mahendra Lal Sircar Professor and Polymer Science), and 3 Centres (Advanced Materials and Atomic, Molecular & Optical Sciences and Mathematical, Computational and Data Science), apart from Service Units that provide research facilitation (Central Scientific Services, Computer Centre, Library, Workshop etc.). These departments, units and centres have been carrying out research and development activities under 5 broad areas. The activities of some of the departments therefore overlap.

1. Molecular Sciences (Organic, Inorganic, Physical Chemistry, Polymer Science, Spectroscopy, Solid State Physics, Advanced Materials, Atomic, Molecular & Optical Sciences) 2. Physics and Chemistry of Materials (Materials Science, Solid State Physics, Polymer Science, Spectroscopy, Energy Research, Advanced Materials) 3. Theoretical Sciences (Theoretical Physics, Physical Chemistry, Spectroscopy, Materials Science, Advanced Materials, Atomic, Molecular & Optical Sciences) 4. Biological Sciences (Biological Chemistry, Polymer Science, Theoretical Physics, Organic Chemistry, Inorganic Chemistry) 5. Mathematical, Computational and Data Science Highlights of major achievements in the different departments, units and centres are as follows:

BIOLOGICAL CHEMISTRY • Computer based Model of TF-FVIIa • Complex on lipid Bilayer • Self-assembling peptide based functional soft materials Peptide stabilized nanoclusters • Signalling of microparticle formation from cell surface and • Naphthalene diimide containing peptide based rewritable role of coagulation factors mediated cell signaling. fluorescent color code • Monocyte to Macrophage differentiation • Self-assembled soft-materials for programmed enzymatic • Molecular mechanism of DNA damage and repair in reactions and prodrug activation cancer • Carbon nanomaterial included supramolecular systems in biomedicine CENTRE FOR ADVANCED MATERIALS • Fluorescent Carbon Dots in Biosensing, Bioimaging and • Synthesis and functionalization of nanoparticle Drug Delivery • Exploring properties of nanomaterials • Fluorescent Organic Nanoparticles in Theranostic • Complex nanostructures and assemblies Application • Applications of nanoparticles as biological probe • Nanoscale Biosensors: Nucleic acid sensing for diagnostic • Energy generation, energy saving using nanomaterials applications CENTRE FOR MATHEMATICAL, COMPUTATIONAL • Nanoscale Bioelectronics • Functional analysis of Nonmuscle myosin IIs and their & DATA SCIENCE mutants found in human patients Computational modeling of electronic, biological and soft • Functional analysis of the spliced isoforms of nonmuscle materials and processes : understanding, design and predictions myosin II in mouse neuronal cells • Computational Approach to predict new materials with designed functionalities • 3D micro-environment regulates NFdependent adhesion to induce monocyte differentiation • Computational quantification of various biological processes, such as, cell division, intracellular transport, and • Role of Phospholipid In blood coagulation organization of cellular objects. 021 • Structure and dynamics of biological and soft matter systems. ENERGY RESEARCH UNIT • Designing new molecules for Solar-Thermal Storage, • The main thrust of the Unit converges on the development Heterogeneous Catalysis using Embedding Techniques, of materials and fabrication technology for thin films and Biomimetic Catalysis & Enzyme Catalysis nano-structured devices for energy applications. • Force field development, Rare Event Simulation, Coarse • Activities include growth of materials like silicon nanocrystals grain simulations and silicon quantum dots embedded in various dielectrics • Multi-reference method development - DMRG for molecular e.g., silicon germanium, silicon oxide, silicon carbide, silicon Hamiltonian, Low scaling spin flip methods, Stochastic CI nitride and a-Si:H/nc-Si:H superlattice structures. methods • Optimizing the individual layers in a-Si:H/nc-Si:H superlattice • QM/MM method development - excited state hybrid QM/ structures and the size of the silicon quantum dots the MM methods with polarizability, embedding schemes optical band gaps of the material varied over a wide range and tandem solar cells fabricated with the absorber layer DIRECTOR’S RESEARCH UNIT consisting of silicon quantum dots in a superlattice structure. Chemical Biology: • Diamond like carbon (DLC) produced as antireflection • Nucleic Acids Recognition and Therapeutics: Stabilization coatings (ARC) on Si solar cells and nanocrystalline diamond of non-Watson-Crick nucleic acid structures, e.g., A-motif, (NCD) thin films as protective coating on photovoltaic C-motif, i-motif & G-quadruplex DNA & RNA devices. • Cellular Delivery: Bioactive/Gene Delivery & Knockdown: • Carbon nanotube, silicon nanowire, etc developed as 1D Plasmid DNA, si-RNA, sh-RNA, aptamer delivery across structures for device applications. eukaryotic cells; Targeting of Cancer cells and Cancer Stem • Titanium dioxide and zinc oxide nanorods developed as cells and in vivo study efficient photocatalytic materials. Biological Membranes: • In2O3:Sn, ZnO, ZnO:F, ZnO:Ga and ZnO:Ga:Cu • Lipid Design, Synthetic Molecular Membranes & Membrane nanostructures developed as transparent conducting oxide Biophysics: Structure-Function Studies; Vesicles, Micelles, on thin film solar cells and other opto-electronic devices. Signaling in Self-organizing Aggregates; Lipid-DNA INORGANIC CHEMISTRY Complexation; Lipid-protein Interactions • Resistive memory devices based on metal coordinated azo • New Surfactants: Bolaamphiphiles, Gemini Surfactants, aromatics. Ion-paired Amphiphiles, Metallo-surfactants, Multi-headed Surfactants etc. • Development of polyamide-polyamine hybrid macrobicycle for recognition of a,-dicarboxylate anions; bis- • Soft Condensed Matter and Complex Systems: Association heterolepticRuII complex based ditopic receptor for colloids, emulsion, normal and reverse aggregates, Gels. extraction of oxyanions; tri-nuclear triple-stranded side-by- Supramolecular Chemistry: side helicates of first row transition metal(II) ions and rotamer • Molecular Design: Investigation of the soft materials using induced molecular motions in interpenetrated system. a variety of physical methods, e.g., rheology, probe- • Aliphatic C-H bond hydroxylation and halogenation with fluorescence, SANS, SAXS, XRD, DSC, AFM / SEM / TEM / dioxygen by biomimetic iron complexes. CFM / POM etc. • Tailor made synthesis of metallo-porphyrin complexes and • Hydrogels & Organogels: Design and synthesis of new probe, using a combination of spectroscopic techniques and gelators& characterization and applications of the resulting reactivity, fundamental aspects of the heme active sites. gels. • Spectroscopic and reactivity studies of heme amyloid beta • Novel Applications with Gels: Phase-selective gelation; Gels peptides associated with Alzheimer’s disease. for sustained pheromone release toward live insect control • Synthesis, characterization and reactivity studies of metal- in fruit orchard. organic frameworks; role of hydrogen bonds and weak • Molecular Probes: Sensors and probes for analytical, interactions in coordination polymers. theranostics& bio-analytical chemistry. Detection of • Synthesis and characterization of heterocyclic macrocycles; biologically relevant species and environmentally hazardous synthesis and anticancer activity of four membered ions or analytes and explosives at nanogram level heteroannulenes. Nanoscience & Technology: • Mono- and di-nitrosyldiiron(II) complexes and their NO • Nanocarbon-composites and Metal Nanoparticle- reduction activity composites • Nanobiotechnology and Nanomedicine • Application of Nanotechnology in Agriculture etc.

022 MATERIALS SCIENCE PHYSICAL CHEMISTRY • Our research focuses on nanomaterials based light harvesting • Development of a Quantum Cascade Laser based gas-phase systems and understand their fundamental photophysical radical reaction kinetics measurement apparatus processes such as charge transfer, electron transfer and energy • Probing of reaction kinetics of the atmospheric radical reaction transfer by using ultrafast spectroscopy. between peroxymethyl radical and nitrogen dioxide • Our group is involved with first principles investigation of • LIF spectroscopy investigations of conformational preferences electronic, magnetic, catalytic and transport properties of of binary hydrogen bonded phenolic complexes Carbon based 2D nanostructures. Two main areas of interest • Matrix-isolation spectroscopy study of weak hydrogen bonded are (a) Catalytic activity and Oxygen Reduction Reaction molecular complexes (ORR) of functionalized 2D nanostructures analogous to • Ion mobility mass spectrometry for conformational analysis of Graphene; and (b) electronic and transport properties of 1D complex molecules in liquids graphenenanoribbons, both AGNR and ZGNR and the effect of • Development of Beyond Born-Oppenheimer Theories, doping with B and N. Molecule-Surface Scattering, Theoretical State-to-State • Structural characterization by single crystal X-ray diffraction and Reaction Dynamics, Selective bond dissociation by optimized Rietveld method. laser pulse field • Our group is involved in understanding the mechanism of • Functional materials for photocatalytic activity. unfolding of protein, effect of mutation on the conformational • Low Temperature Physics, Semiconducting Nanostructures, dynamics of protein, hydrophobicity at different length scales, Magnetic Materials molecular mechanism of ice growth inhibition by antifreeze • Functionalized porous nanomaterials for gas storage, metal protein, mechanistic insight into the functional mechanism of ion sensing, water purification, eco-friendly catalysis for the motor protein and evolutionary conserved functional dynamics of co-evolution in proteins/enzymes in different lineages. synthesis of organic fine chemicals, CO2 fixation, photosplitting of water and drug-delivery applications. POLYMER SCIENCE UNIT • A theory for electromagnetically induced transparency (EIT) for • Conducting polymers with application in photovoltaic, energy a continuum-bound two-color photoassociation (PA) system is storage, electro-luminescence developed. • Amphiphilic Polymers • Quantum dynamics and number-phase uncertainty of bosons • Polymer-bioconjugates and fermions in a double-well potential is analysed in detail. • Supramolecular Polymers • Standard quantum limits for number and phase fluctuations • Helical Polymers in both bosonic and fermionic matter-waves are defined • Ionic liquids/Poly(ionic liquid)s by treating both number and phase variables as quantum • Nanocatalysts mechanical operators. • Polymer-inorganic hybrid materials • A theory for interaction of a Laguerre–Gaussian beam with • Covalent-supramolecular copolymer composites trapped Rydberg atoms is developed. • Gel and other soft matters • Understanding role of spin-orbit coupling in deciding the PSU faculties are also engaged in teaching programme at IACS and magnetic and electronic round states of 4d-5d transition metal offer basic as well as advanced courses in Polymer Science oxides, SOLID STATE PHYSICS • Inducing multifunctionalities in solids by anion doping and also • Charge carrier dynamics in glasses, polymers and oxide ion by manipulating local coordinations, conductors has been correlated with microscopic lengths of • from water and its usage in water decontamination, dynamics and network structure. • Organic electronics, Solar cells based on hybrid perovskites and • Understanding nucleation of metal clusters in water and inorganic semiconductors, Scanning Tunneling Spectroscopy of manipulating the process for the use of water purification. 2D transition metal dichalogenides and their heterostructures, ORGANIC CHEMISTRY topological insulators, spintronics. • Asymmetric and stereocontrolled synthesis of complex natural • Electronic structure of low dimensional quantum spin systems; products of biological significance Role of spin-orbit coupling in strongly correlated systems; • Organometallic chemistry Multiferroics; Electronic structure and transport of coupled • quantum dots. • Supramolecular chemistry • Magnetic, electric transport, and dielectric properties of bulk and nanostructured materials. • Chemical biology and drug development • Doping mechanism and electrical transport, photoluminescence, • Chemical tools to study zebrafishmebryogenesis and photoconductivity properties of metal oxide-based thin • Antisense technology for gene therapy films, nanostructures, and nanocomposites for applications in • Asymmetric catalysis transparent conducting oxides, luminescent devices, resistive • Development of novel synthetic methodologies and reagents switching, and photodetectors. including nanoparticles and nanomaterials. • Magneto-structural instability in transition metal based solids • Use of nanosurfaces for easy extraction of ferrihydrite clusters including ferromagnetic shape memory alloys and multiferroic oxides. Ground state magnetic properties of transition metal oxides with novel low dimensional crystal structure and geometrically frustrated systems.

023 • Physics of living and nonliving systems using statistical • Unnatural DNA Bases – Quantum Chemistry and Classical mechanics, Study of various biological processes, such as, cell Molecular Dynamics. division, intracellular transport, and organization of cellular • Surface spectroscopy of soft interfaces objects using combination of theory with agent based modeling, • Protein folding using the IR spectroscopy technique Monte Carlo methods, and molecular dynamics. Study of phase • Lipophilic interaction transition, domain coarsening in nonliving disordered materials. • Role of fluorine in biology • Fabrication of nanoelectronic devices; Electrical transport properties of van der Waals heterostructure; Electronics at THEORETICAL PHYSICS nanoscale; Spin transport via mesoscopic objects; Development of bioelectronic devices for medical applications. • Fields, Strings, Gravity, Cosmology and Mathematical Physics • Investigation of various complex quantum materials such : In quest of axionic hairs in quasars, Radion stabilization in as exotic superconductors, novel magnetic materials (spin higher curvature warped spacetime, Fermion localization in liquid) and topological materials etc. Development of various higher curvature spacetime, Strong gravitational lensing - A measurement techniques for measuring electrodynamic probe for extra dimensions and Kalb-Ramond field, Fermion response over a large frequency range spanning from d.c. to localization in higher curvature and scalar–tensor theories of gravity, Excavating black hole continuum spectrum: Possible infrared. signatures of scalar hairs and of higher dimensions, Bouncing • Quantum materials for applications, Magentism and spintronics, cosmology from warped extra dimensional scenario,Modulus Multiferroics& Ferroelectrics, Epitaxial growth of thin films/ stabilization in a non-flat warped braneworld scenario, Fermion heterostructures, Device physics of multifunctional materials, localization in a backreacted warped spacetime, Gravity Interface and Surface science. stabilizes itself, Study of superradiant instability of a dilaton-axion black hole under scalar perturbation, Determination of many- RAMAN CENTRE FOR ATOMIC, MOLECULAR AND electron basis functions for a Quantum Hall ground state using OPTICAL SCIENCES Schur polynomials, Bulk reconstruction in AdS and Gel’fand- • Theoretical study of ultracold atomic photoassociative Graev-Radon transform, 1/r potential in higher dimensions, processes. Buchdahl compactness limit for a pure Lovelock static fluid • Theoretical study of atom-atom interaction in external fields. star, Black Holes: Eliminating Information or Illuminating New Physics?, Entropy of a box of gas in an external gravitational • Development and implementation of highly accurate spin-free field, A novel derivation of the boundary term for the action robust non-perturbative coupled cluster electronic structure in Lanczos-Lovelock gravity, Cosmological Implications of shift methods for balanced treatment of dynamic and non-dynamic symmetric Galileon field. electron correlation. • Particle Physics Phenomenology : Exploring Non-Holomorphic • Development of size extensive and size-consistent multi- Soft Terms in the Framework of Gauge Mediated reference perturbative techniques. Breaking, How light a higgsino or a wino dark matter can • Theoretical formulation of analytic gradient based techniques become in a compressed scenario of MSSM, Exploring viable for molecular magnetic properties within non-relativistic and vacua of the Z3-symmetric NMSSM, Generation of a radiative non-relativistic framework. neutrino mass in the linear seesaw framework, charged lepton • Quantum chemical discovery of new strategies for hydrogen flavor violation, and dark matter, Search for bottom squarks in the baryon-number violating MSSM, Dark matter and collider storage. studies in the left-right symmetric model with vector like leptons, • Understanding photoredox processes leading to generation Higgs Couplings at High Scales, Explaining Dark Matter and of solvated electrons using may-body and density functional Neutrino Mass in the light of TYPE-II Seesaw Model, R(D ) methods. anomalies in light of a Non-Minimal Universal Extra Dimension. • Computational exploration of strategies for N2 activation and • Lattice Gauge Theory & Mathematical Physics :Accelerating conversion to NH3. lattice QCD simulations with 2 flavours of staggered fermions • Unvelling molecular details for fast-oligo/polymerization on multiple GPUs using OpenACC - a first attempt processes. • Condensed Matter and Statistical Physics : Ramp and periodic SPECTROSCOPY dynamics across non-Ising critical points, Anisotropic transport • Development of methodology to study van der Waals complexes. of normal metal-Barrier-normal metal transport in monolayer phosphorene, Effect of Magnetic Field and Rashba Spin-Orbit • Reaction mechanism to detoxify model Nerve agents on surface. Interaction on the Josephson Tunneling between Topological • Chemical hydrogen storage materials. Superconductors, Magnetization reversal by superconducting current in 0 Josephson junction, Bosons with incommensurate • Chemical vapor deposition (CVD) from single source precursor. potential and spin-orbit coupling, Magnetization induced • Catalytic CO oxidation on oxide clusters. dynamics of a Josephson junction coupled to a nanomagnet, • Controlling agostic phenomena by substitution and orientation An exactly solvable quench protocol for integrable spin models, Multifractality without fine-tuning in a Floquetquasiperiodic • Structure and reactivity of metallofullerens (EMFs) chain,Onset of FloquetThermalisation,Aperiodically Driven • Binding interaction of metal ions with artificial amino acids Integrable Systems and their Emergent Steady States,Duality between the Deconfined Quantum-Critical Point and the • Computation of TeraHertz spectra of molecular Solids. Bosonic Topological Transition, Tunneling of a blocked wave • Quantum Mechanical Tunneling in Chemical reactions. in a circular hydraulic jump, Contrasting work fluctuations • OrganoGold Catalysis. and distributions in systems with short-range and long-range correlations, Dynamics of binary Bose-Einstein condensates • Designing Materials for Singlet Fission. via Ehrenfest like equations : Appearance of almost shape • Modelling Two dimensional materials like Silicene and invariant states,Propagation of arbitrary initial wave packets Phosphorene. in a quantum parametric oscillator: Instability zones for higher moments, Estimating the boundaries of a limit cycle in a 2-D • Computation on Graphite and Carbon nanomaterials. dynamical system using the renormalization group Magnons in a two dimensional transverse field XXZ model. 024

Department of BIOLOGICAL CHEMISTRY

Department Profile People Faculty : 06 Post-doctoral Research Associate : 03 Ph.D. Students : 45 Non-Academic Staff : 03 Extra Mural Funding Projects (ongoing) : 09 Research Achievements Rupa Mukhopadhyay Ph.D. degree awarded : 01 Head of the Department Academic Activities Seminars organized : 05 Conference/Symposia/School organized : 02 Talks delivered by members of of department in conferences/symposia (National) : 20 Talks delivered by members of department in conferences/symposia (International) : 01

026 Arindam Banerjee, FASc Senior Professor Self-assembling peptide and amino acid based functional nanobiomaterials Associates : (1) K Basu, SRF (Institute), (2) N Nandi, SRF (CSIR), (3) S Paul, SRF (CSIR), (4) K Gayen SRF (CSIR), (5) B Hasda JRF (UGC), (6) S Hazra, JRF (UGC), (7) B Mandal, JRF (CSIR) and (8) D Bairagi, JRF (CSIR)

SELF-ASSEMBLING PEPTIDE BASED FUNCTIONAL SOFT MATERIALS : Self-assembling synthetic peptides under suitable condition(s) form soft materials like gels. Some of these gels exhibit wonder- ful functions as removing toxic organic dyes and environmen- tally hazardous metal ions( Pb2+ ions) from waste water, in oil –spill recovery, and also as potential antibacterial agents against Gram-positive and Gram-negative bacteria. Peptide based am- bidexterous gelators have been developed that produces gels to do dual functions: (i) removal of toxic organic dyes in waste water treatment and (ii) oil spill recovery. A tripeptide based self-shrink- ing hydrogel has also been developed for the removal of tox- ic lead ions and organic dyes from waste-water efficiently with A naphthalene-diimide based peptide has been discovered an ability to re-use for a few cycles. Amphiphilic peptide-based with efficient photo-luminescent in aqueous medium and non-cytotoxic, proteolytic resistant hydrogels have been devel- in solid state and the material has been effectively applied oped with a potential antibacterial activity against Gram-positive as rewritable fluorescent color code.(ACSOmega, 2018, 3, and Gram-negative bacteria. PUBLICATIONS IN JOURNALS PEPTIDE STABILIZED NANOCLUSTERS : 1. Different color emissive copper nanoclusters and cancer cell Different sized copper nanoclusters have been prepared from imaging -K Basu, K Gayen, T Mitra, A Baral, S S Royand A a cheap source ( copper acetate copper acetate monohydrate Banerjee;ChemNanoMat, 3, 808 (2017).[IF:2.937] [Cu(OAc) , H O] and stabilized by a bioactive peptide glutathi- 2 2 2. Peptide-based ambidextrous bifunctionalgelator : one (GSH). Various colour emitting clusters have been found, Applications in oil spill recovery and removal of toxic organic namely, blue, cyan, green and orange-red. Orange-red colour dyes for waste water management -K Basu, N Nandi, B Mondal, emitting clusters has been found to be non-cytotoxic and used for A Dehsorkhi, I WHamley and A Banerjee; Interface Focus, 7: cancer cell imaging. 20160128(2017).[IF:2.693] NAPHTHALENE DIIMIDECONTAINING PEPTIDE BASED 3. A Tripeptide-based self-shrinking hydrogel for waste-water REWRITABLE FLUORESCENT COLOR CODE : treatment : Removal of toxic organic dyes and lead (Pb2+) Ions Self-assembly of a naphthalene diimide (NDI)-appended pep- -S Basak, N Nandi, S Paul, I W Hamley and A Banerjee; Chem. tide has been achieved in aqueous media and also in solid sate Commun. , 53, 5910, (2017).[IF:6.319] exhibiting a bright yellow fluorescence. Interestingly, it has been 4. Amphiphilic peptide-based supramolecular, non-cytotoxic found that this NDI-based fluorescent soft aggregate in aqueous stimuli-responsive hydrogels with antibacterial activity -N Nandi, medium can be successfully used as an invisible security ink as K Gayen, S Ghosh, D Bhunia, S Kirkham, S Sen, S Ghosh, I Hamley and A Banerjee; Biomacromolecules , 18, 3621 this NDI-appended peptide fluorescence is increased, and in the (2017). [IF:5.246] alkaline medium, the fluorescence disappears , indicating its probable application in rewritable florescent color code for authentication purposes in future. 027 5. A luminescent naphthalene diimide based peptide in aqueous LECTURES DELIVERED: medium and in solid state: Rewritable fluorescent color Code -S Invited talk at (1) National symposium at Vidyasagar University; Basak, N Nandi, S Paul and A Banerjee;ACS Omega, 3, 2174 (2) Workshop at Surendranath College, Kolkata; (3) RANST, (2018)(New Journal) Mohali, Chandigarh; (4) National Conference at Visva-Bharati, SPONSORED PROJECT Santiniketan; (5) Refresher Programme at Dhanbad; (6) Sastra • Assembly Peptide-Conjugated …… for Optoelectronics University, Tamilnadu; (7) IIT Indore; (8) NIPER-Kolkata; (9) IIT Mandi, Himachal Pradesh.

Prasanta Kumar Das, FASc Senior Professor Biomedicinal chemistry of self-assembled functional soft nanocomposites Associates : (1) S Sarkar, SRF (Inspire), (2) S Dinda, SRF (CSIR), (3) P Choudhury, SRF (CSIR), (4) D Chakraborty, JRF (UGC), (5) D Sarkar, JRF (CSIR), (6) A K Ghosh, JRF (CSIR), (7) M Chowdhury, JRF (UGC), (8) Dr C Adhikari, (NPDF)

SELF-ASSEMBLED SOFT-MATERIALS FOR PROGRAMMED H-aggregation in pure water. Aqueous CNT dispersion was ENZYMATIC REACTIONS AND PRODRUG ACTIVATION: prepared with cholesterol-based glucose-functionalized An innovative idea has been developed to dissipate such self-ag- amphiphile. These two supramolecular self-assemblies were gregates so that they can be exploited in different applications covalently linked by using boronic acid-diol interaction between ranging from biocatalysis to biomedicine. Keeping this issue a phenylboronic acid based vesicle and 1,2-diol moieties of in mind, two complementary hydrogels were synthesized us- glucose tethered dispersing agent to develop a vesicle-CNT ing cholesterol-based phenylboronic acid and glucose-tailored conjugate. Now, this cytocompatible vesicle-CNT conjugate amphiphiles. These two gels, having complementary function- successfully delivered anticancer drug doxorubicin within B16F10 al moieties (boronate and diol), degrade upon mixing because melanoma cells and also exhibited better cellular transportation ability compared to the drug-loaded vesicle or CNT. This was from a self-aggregated structure to a non-self-assembled one further reflected in an enhanced killing efficiency of the vesicle- took place through the formation of the boronate-diol adduct, CNT conjugate. which lacks any selfassembly property. The mutual self-destruc- tion of these complementary gels upon mixing was utilized in FLUORESCENT CARBON DOTS IN BIOSENSING, programmed chemical/biochemical reactions. Separately im- BIOIMAGING AND DRUG DELIVERY: mobilized reactants (substrate/lipase) in different gels come into Positively surface-charged blue-emitting and green- immediate proximity with each other owing to the disruption of emitting cationic carbon dots (CCDs) were prepared. Both the self-assembled gel upon mixing and consequently facilitate CCDs were noncovalently coupled with negatively charged the enzymatic reaction in a regulated manner. This dissolution estradiolhemisuccinate through electrostatic interaction to of complementary gels was also employed in prodrug activa- prepare estradiolhemisuccinate modified carbon dots. These tion (the conversion of chloramphenicol from chloramphenicol nanohybrids were utilized as selective cellular markers of estrogen succinate in the presence of CV lipase) through a programmed receptor-rich (ER+) cells over estrogen receptor negative (ER-) enzymatic reaction. cells Moreover, the anticancer drug doxorubicin (dox)-loaded nanohybrids showed selective killing of ER(+) cells through a late CARBON NANOMATERIAL INCLUDED ! "#$ % 2+ SUPRAMOLECULAR SYSTEMS IN BIOMEDICINE: hemoglobin-derived blue emitting Fe -containing carbon dots, A vesicle-single walled carbon nanotube (CNT) conjugate was namely, blood dots (BD) was synthesized. This BD can efficiently split H O to highly reactive hydroxyl/superoxide radicals which developed by a boronic acid-diol covalent linkage between a 2 2 self-assembled vesicle and dispersed CNT. Trimesic acid based quench the intrinsic fluorescence of BD. Consequently, BD was utilized in H O sensing. Notably, the reactive oxygen species phenylboronic acid appended tripletailedamphiphile was 2 2 (hydroxyl and superoxide radicals) generated from H O , upon synthesized that formed monolayered vesicles through 2 2 interaction with BD, can damage DNA by oxidation. In this 028 context, the Fe2+-enriched BD can catalyze reactive oxygen PUBLICATIONS IN JOURNALS species (ROS) generation from H O within the cancer cell, 2 2 1. Self-Assembled vesicle-carbon nanotube conjugate formation which causes selective killing of the cancer cell via oxidative DNA through boronate-diol covalent linkage - S Dinda, D Mandal, S damage. In addition, BD also has been used in bioimaging by Sarkar and P K Das, Chem. Eur. J.,23, 15194 (2017).[IF:5.317] exploiting its intrinsic fluorescence to distinguish between cancer 2. Dissipation of self-assemblies by fusion of complementary gels and noncancer cells. : An elegant strategy for programmed enzymatic reaction - D FLUORESCENT ORGANIC NANOPARTICLES IN Mandal, P Choudhury, D Sarkar and P K Das, Chem. Commun, THERANOSTIC APPLICATION: 53, 7844 (2017).[IF:6.319] Naphthalene diimide based L-phenylalanine tethered bola- 3. Estradiol hemisuccinate modified surface engineered carbon amphiphile was synthesized, which was non-emissive in dots : Target specific theranostic agent - S Sarkar, K Das and P K molecularly dissolved state Addition of water to the molecularly Das, ACS Sustainable Chemistry & Engineering, 5, 8356 (2017). dissolved state facilitates the amphiphiles to exhibit aggregation [IF:5.951] induced green emission (AIE) through excimer formation. In 4. L-Phenylalanine tethered naphthalene diimide based presence of large amount of water, these amphiphiles formed aggregation induced green emitting organic nanoparticles - K self-aggregated spherical morphology of diameter 30-90 nm. Das, S Nimushakavi, A Chaudhuri and P K Das, Langmuir, 33, Moreover, these cytocompatible, water dispersible fluorescent 4500 (2017).[IF:3.833] organic nanoparticles (FONPs) were beneficial for bio-imaging 5. Integrin receptor targeting RGDK tagged nanocarrier : as well as killing of cancer cell by loading anticancer drug Anticancer efficacy of loaded curcumin - K Das, S Nimushakavi, cucumin. A Chaudhuri and P K Das, Chem Med Chem, 12, 738 (2017). [IF:3.225]

Ph.D. DEGREE AWARDED : (1) Krishnendu Das (JU)

LECTURES DELIVERED: Invited talk at (1) IIT-Kharagpur; (2) Nanyang Technological University, Singapore; (3) CSIR-Indian Institute of Chemical Technology, Hyderabad; (4) NATCOSEB, Sambalpur University, Odisha; (5) Pt. RavishankarShukla University, Raipur; (6) Science Fluorescent Organic Nanoparticles in Theranostic Application Academies Lecture-1, Bethune College; (7) Science Academies (Langmuir, 2017, 33, 4500-4510) lecture-2&3, Kaliyanganj College.

Rupa Mukhopadhyay Professor and Head Nanoscale Bioengineering Associates : (1) J Kolay, SRF (CSIR), (2) H Lahiri, SRF (Inspire), (3) S Bera, SRF (Inspire), (4) T Mana, JRF (Institute), (5) P Nath, JRF (UGC), (6) S Mondal, JRF (CSIR)

NANOSCALE BIOSENSORS: Applicability of the on-surface locked nucleic acid (LNA)-based single molecule force spectroscopy (SMFS) assay that we have developed has been tested in detection of gene stretches as relevant to multiple drug-resistant tuberculosis, which is a pressing problem in India.

029 NANOSCALE BIOELECTRONICS : Conductive probe 12 Current-voltage response Realization of useful nanometre length scale devices in which curves Scanning Tunnelling 6 metalloproteins are junction-confined in a distinct molecular Spectroscopy (STS)

- 0 arrangement for generating practical electronic signals (for ex- e protein film I (nA) -6 NDR zone ample, in bioelectronic switch configuration), is elusive till date. M-ferritin holoferritin apoferritin This is mostly due to difficulties in observing electronically ap- -12 holoferritin -2 -1 0 1 2 propriate signal (i.e., reproducible and controllable), when stud- Conductive substrate V(volt) Negative DifferentialResistance ied under junction-assembled condition. A useful ‘ON’ - ‘OFF’ Metal-Insulator-Metal Configuration behaviour, based on the negative differential resistance (NDR) Negative differential resistance behaviour of the iron storage protein peak characteristics in the current-voltage response curves, has ferritin. (Langmuir, 34, 3126-3135, 2018). been observed in ferritin, an iron-storage protein having a semi- conducting iron core. As ferritin can be tailor-made in a struc- PUBLICATIONS IN JOURNALS turally conserved manner, metal core reconstituted ferritins, i.e., 1.Negative differential resistance behaviour of the iron storage Mn(III)-ferritin, Cu(II)-ferritin and Ag-ferritin, were prepared. A protein ferritin - J. Kolay, S. Bera, T. Rakshit and R. Mukhopadhyay*, correlation between the NDR peak signatures, as observed in Langmuir, 34, 3126-3135 (2018). [IF: 3.833] the respective current-voltage response curves of these reconsti- tuted ferritins, and the nature of the metal core, is demonstrated. SPONSORED PROJECT In support of our earlier proposition, here we affirm that ferritin • Looking at Histone-Histone Acetyltransferase Complex protein behaves as a conductor-insulator (metal core-polypep- Formation by AFM-based Single Molecule Force tide shell) composite, where the overall electronic structure of the Spectroscopy (CSIR) material can alter as a function of the nature of the conducting • To Probe Functional Bio-Interfaces by Scanning Probe filler placed inside the insulated matrix. Microscopy at Nanoscale/Single Molecule Level (DST)

Siddhartha S Jana Professor Molecular Cell Biology Associates : (1) D Haldar, SRF, (2) R Kr Singh (Int-PhD), (3) J Kar, JRF, (4) S Das, JRF, (5) D Mallick (Int PBS-M.Sc.), (6) I Ghosh, JRF, (7) K Banerjee, JRF and (8) K Ghosal, RA

• To understand the role of nonmuscle myosin II in bleb show a lower growth rate and volume compared with NS siRNA, dynamics in tumor cell lines (Funded by DST). suggestingthat NMIIA and IIB are required both for connecting • Functional analysis of Nonmuscle myosin IIs and their cytoskeleton actin and perinuclearNesprin, and for maintaining mutants found in human patients (Funded by DBT). the expression of genes involved in tumor progression.B)NM • Functional analysis of the spliced isoforms of nonmuscle IIs can act as molecular cue for different types of membrane myosin II in mouse neuronal cells (Funded by CSIR).Earlier protrusions-blebbing and lamellipodia- in human breast tumor we reported that the expression of NMIIA and IIB is increased cell, MCF-7, and the activity of NMIIs may be regulated by in carcinogen (3-methylcholanthrene)-induced tumor in RhoGTPase pathway during blebbing. mice but the functional importance of NMIIs in tumor cells was not clear. We detect transformed tissue at 30-45 days post 3MC-dose regime, and isolate tumorigenic cells from Breakage of cortex actomyosin contractility generates multiple blebs: MCF-7 cells 3MC induced tumor, that express NMIIA, NMIIB, CD34 and were transfected with NM IIA-GFP. Both fibroblast markers such a-SMA as and Vimentin. NMIIs show fluorescence (Fl) and differential interference distinct phospho-dependent localizations around the nuclear contrast (DIC) images of a NMIIA-GFP periphery and at the tip of cell protrusions in the isolated positive MCF-7 cell are shown here. Note that Breakage of cortex (shown by arrows) cells. NM IIA or IB-knockdown cells show abnormality in cell provides bleb formation migration, and NM IIA or IIB siRNA-injected tumors in mice 030 LECTURES DELIVERED: SPONSORED PROJECT Invited talk at (1) Jadavpur Unviersity; (2) IACS, Kolkata; (3) • Functional Study of nonmuscle myosin II …… dynamics in NHLBI, NIH-USA; (4) IIT Kharagpur tumor cell line (CSIR) • Functional importance of Nonmuscle myosin II-s …. Human patients(DST) • Functional analysis ….. mouse neuronal cells

Deepak Kr. Sinha Associate Professor Biological physics, Lipid droplets in development. Associates : (1) Ms A Dutta, SRF (Institute), (2) M Agarwal (CSIR), (3) P Biswas, (4) A Bhattacharya, SRF (CSIR) and (5) S Bhattacharya, Postdoc (NPDF)

3D MICRO-ENVIRONMENT REGULATES NFK Left panel, Schematic representation depicting the relation DEPENDENT ADHESION TO INDUCE MONOCYTE between adhesion and differentiation for monocytes. (Mo: DIFFERENTIATION : non-adhered monocytes. Mo1: weekly adhered monocytes, Differentiation of monocytes entails their relocation from blood Mo2: strongly adhered monocytes, Mp: macrophages, Ksp: to the tissue, hence accompanied by an altered physicochemical Spontaneous rate of conversion of Mo1 to Mo2, Kin rate micro-environment. While the mechanism by which the of conversion from Mo1 to Mo2 in response to chemical biochemical make-up of the micro-environment induces stimulation, K3D rate of conversion from Mo1 to Mo2 in 3D differentiation is known, the fluid-like to gel-like transition in the gel-like micro-environment. physical micro-environment is not well understood. Monocytes Right panel, Cartoon representing the signaling cascade maintain non-adherent state to prevent differentiation. We associated with the differentiation process mediated via chemical establish that irrespective of the chemical makeup, a 3D gel- inducers and the adhesion. The Chemical inducers generate a likemicro-environment induces a positive-feedback loopof short pulse of MAPK activation under negative feedback control. adhesion-MAPK-NF-k activation to facilitate differentiation. In P-MAPK activates NF-k which translocates to the nucleus to 2D fluid-likemicro-environment,adhesion alone is capable of transcribe adhesion genes. Stable adhesion complexes activates inducing differentiation via the same positive-feedback signalling. MAPK through a positive feedback loop to sustain higher levels Chemical inducer treatment in fluid-likemicro-environment, of p-MAPK necessary for differentiation. increases the propensity of monocyte adhesion via a brief pulse of p-MAPK. The adhesion subsequently elicit differentiation, PUBLICATIONS IN JOURNALS: establishing that adhesion is both necessary and sufficient to 1.Myosin-1 inhibition by PClP affects membrane shape, cortical induce differentiation in 2D/3D micro-environment. MAPK, actin distribution and lipid droplet dynamics in early Zebrafish and NF-k being key molecules of multiple signaling pathways, embryos - P Gupta, R Martin, Hans-Joachim Knolker, D Nihalani we hypothesize that biochemically inert 3D gel-likemicro- and D K Sinha; PLoS One. 12 e0180301(2017).doi: 10.1371/ environmentwould also influence other cellular functions.. journal.pone.0180301 2.Zebrafish lipid droplets regulate embryonic ATP homeostasis to power early development- A Dutta and D K Sinha; Open Biology 7 170063(2017).doi: 10.1098/rsob.170063.

SPONSORED PROJECT • Study of actin filament conformational dynamics (DST) • Study of cell-cell interaction mediated via substrate viscoelasticity (DBT)

031 Prosenjit Sen Associate Professor Coagulation Biology and cellular signaling Associates : (1) A Roy (Institute), (2) K Das (CSIR), (3) R Prasad (Inspire), (4) SMullick (SPM Fellow), (5) A Bhattacharya (SPM Fellow, joint student with Dr. Deepak Kumar Sinha), (6) M Roy (Inspire), (7) A Singh (Inspire) and (8) S Banerjee, SRF (CSIR)

ROLE OF PHOSPHOLIPID IN BLOOD COAGULATION : Coagulation process is highly guided by the phopholipid composition on cell surface. Till date it has been documented that phosphatidyl-serine enhances the coagulation several folds by enhancing TF-FVIIa complex activity but structural and molecular basis of these alteration is not known yet. Role of other lipids are also not studied extensively. So we are trying to address this by computational as well as biochemical way. We have made various composition of lipid bilayer in silico that mimic cell surface environment. We have also modeled our target proteins tissue factor and FVIIa in this process. We have built up the complex system of our protein with different lipid bilayer environment for MD simulation study. We have done MD simulation and tried to understand the structural alteration of TF- FVIIa complex under different lipid environment. To understand the molecular basis of phospholipids function we synthesized phospholipids with modified head groups. With these lipids we have synthesized different vesicles and embed full length TF within these vesicles. We have checked the TF activity by activity assay from where we got a clear picture of role of functional groups of phospholipids in coagulation. Computer based Model of TF-FVIIa Apart From Tissue factor EPCR, primarily known as Protein C Complex on lipid Bilayer receptor also serve as an receptor that can bind FVIIa. Through molecular dynamic study we are trying to find out the binding sites and the binding affinity and role of lipids in binding. b) Apart from coagulation coagulation-factors involve in many SIGNALLING OF MICROPARTICLE FORMATION FROM signaling events like metastasis, angiogenesis by cleaving CELL SURFACE AND ROLE OF COAGULATION FACTORS PAR family receptors. Full signaling cascades have not been MEDIATED CELL SIGNALING. elucidated yet. We have mapped novel signaling cascade a) Microcparticles are the cell shredded circular vesicles carrying initiated by the coagulation proteases and the role of members important proteins and cell material. It has been well established involved in this signaling cascade. that these micro particles plays important physiological roles itself or fusing with other cells. The cellular signaling events MONOCYTE TO MACROPHAGE DIFFERENTIATION : responsible for this microvesicle formation are not known yet. We The mononuclear phagocytic system consists of monocytes, could able to find out the signaling cascade of this microvesicle whichcirculates in the blood and the tissue resident macrophage. formation against few physiological stimuli and found out the During hematopoiesis in the bone marrow,granulocyte- role of these vesicles in cancer propagation. monocyte progenitor cells differentiate intopromonocytes, which leave the

032 bone marrow and enterthe blood, where they further differentiate PUBLICATIONS IN JOURNALS into maturemonocytes. Monocytes circulate in the bloodstream 1. Molecular determinants involved in differential behaviour for some time, during which they enlarge; then they migrate into between soluble tissue factor and full-length tissue factor towards the tissues and differentiate into specific tissue macrophages. factor VIIa -R Prasadand P Sen; Phys Chem Chem Phys.,19, Pro-inflammatory, metabolic and immune stimuli elicit increased 22230 (2017).[IF:] recruitment of monocytes to peripheral sites, where differentiation 2. Coagulation factor VIIa-mediated protease-activated receptor into macrophages occurs, contributing to host defence, and tissue 2 activation leads to -catenin accumulation via the AKT/ remodelling and repair. There are some macrophages always GSK3Y pathway and contributes to breast cancer progression- present in the tissue without any infection and that differentiation A Roy, S A Ansari, K Das, R Prasad, A Bhattacharya,S Mallik, A cause is not known yet. Mukherjeeand P Sen; J. Biol. Chem.,292(33) 13688 (2017). Through this project we deals with monocyte to macrophage doi:10.1074/jbc.M116.764670 differentiation process to characterize the major biophysical 3. Structural modulation of Factor VIIa by Full-length Tissue changes occurring during this process. Our aim also includes Factor (TF1-263) : Implication of novel interactions between the elucidation of the cellular signaling events responsible for EGF2 domain and TF- R Prasad and P Sen; J BiomolStructDyn., this differentiation and migratory property of macrophages. In 36 621 (2018).[IF:] the course of this work we got a novel finding that monocyte to macrophage differentiation is occurring without any added PUBLICATIONS IN BOOKS/BOOK CHAPTER/ external stimulus only by biophysically manipulate the environment. MONOGRAPHS : We have characterized this differentiation in different substrate 1. Role of Tissue Factor-FVIIa Blood Coagulation Initiation environment. Now have investigated the triggering cause for Complex in Cancer – A Roy, R Prasad, A Bhattacharya, K Das this auto-differentiation & characterized the underlying signaling and P Sen; Springer Link, 101-119, 2017. events behind this process. 2. Functional Aspects of Activated Protein C (APC) in Regulating We are also trying to evaluate the role of lipid droplet and Homeostasis and Disease – R Prasad, A Roy and P Sen; Springer autophagy in this differentiation procedure. Link, 395-408, 2017.

Benu Brata Das Associate Professor Molecular mechanism of DNA damage and repair in cancer

(1) A Ghosh, SRF (CSIR), (2) S K Das, SRF (Institute), (3) I Rehman, SRF (Institute), (4) S Paulchowdhuri, JRF (UGC) and (5) S Bhattacharjee, JRF (CSIR).

Our laboratory primarily focuses on DNA topoisomerases, Top1 is essential in higher eukaryotes as it relaxes positive DNA supercoiling in advance of replication forks and transcription complexes as well as negative supercoiling behind such complexes. Supercoiling relaxation requires the production of transient Top1 cleavage complexes (Top1cc), which are Top1-linked DNA single-strand breaks. Top1cc catalytic intermediates can be converted into irreversible Top1-DNA cleavage complexes by colliding replication and transcription complexes. It is those DNA lesions that trigger cell death and the antitumor activity of camptothecin (CPT) and its clinical derivatives irinotecan and topotecan after the drugs selectively trap Top1cc. Despite the clinical successes of Top1 inhibitors, inherent resistance has been reported with significant limitation. CPT and its derivatives bind reversibly to the Top1 cleavage complexes. The drug-DNA-Top1-complexes are destabilized in the serum or when CPT is diluted out or removed from cell culture, leading to rapid reversal of Top1cc that limits the efficacy of Top1-poisons. Thus, our group at IACS is focused to understand how new genes and novel post-translational modifications coordinate the DSBs repair signaling in cells, which can eventually pave the pathway into therapeutic benefit.

033 FIGURE: PRMT5 deficient cells are hypersensitive to camptothecin. Top panel: PRMT5 depletion produces an accumulation of CPT-induced DNA strand breaks. Representative images of alkaline comet assays in control and PRMT5-depleted HCT116 cells treated with CPT (5 μM, 1 h).

Bottom Panel: PRMT5 depletion enhances CPT-induced H2AX. Confocal immunofluorescence microscopic analysis of CPT (5 μM)-induced H2AX in control and PRMT5-depleted HCT116 cells after the indicated times. PRMT5 and H2AX are shown in red and green respectively. Nuclei were stained with DAPI (blue).

PUBLICATIONS IN JOURNALS 3. Induced Aggregation of AIE-Active Mono- 1 PRMT5-mediated arginine methylation of TDP1 for the repair CyclometalatedIr(III) Complex into Supramolecular Branched of topoisomerase I covalent complexes – I Rehman, S Basu, S K Wires for Light-Emitting Diodes - S Maji, P Alam, G S Kumar, Das, S Bhattacharje, A Ghosh, Y Pommier and B B Das; Nucleic. S Biswas, P K Sarkar, B Das, I Rehman and B B Das; Small, Acids Res., (2018). (In Press)[IF:10.16] 13(15), (2017).[IF:9]

2. Neutral porphyrin derivative exerts anticancer activity by SPONSORED PROJECT targeting cellular topoisomerase I (Top1) and promotes apoptotic • DNA damage control ….. post-translational regulations cell death without stabilizing Top1-DNA cleavage complexes – (Wellcome Trust/DBT) S K Das, A Ghosh, S Paul Chowdhuri, N Halder, I Rehman, S Sengupta, K C Sahoo, H Rath and B B Das; J Med Chem.Jan,11 (2018).[IF:6.2]

034

Centre for AdvanceD Materials

Department Profile People Faculty : 02 Post-doctoral Research Associate : 02 Ph.D. Students : 18 Non-Academic Staff : 02

Extra Mural Funding Projects (ongoing) : 04

Nikhil Ranjan Jana Research Achievements Professor and Head Ph.D. degree awarded : 01 Academic Activities Seminars organized : 04 Conference/Symposia/ School organized : 00 Talks delivered by members of department in conferences/symposia (National) : 19 Talks delivered by members of department in conferences/symposia (International) : 04

036 Nikhil Ranjan Jana Professorand Head Biomedical application of functional nanoparticle Associates : (1) Dr. Mukhopadhyay (NPDF), (2) Dr. A Chakraborty, RA (CSIR), (3) N Pradhan, SRF (Institute), (4) C Dalal, SRF (CSIR), (5) H Ali, SRF (CSIR), (6) K Debnath, (Institute), (7) K Mandal, SRF (CSIR), (8) S Ghosh, SRF (CSIR), (9) S Mandal, SRF (CSIR), (10) A Biswas, SRF (CSIR), (11) S Pal, SRF (CSIR) and (12) P Panja, SRF (CSIR)

BIOMEDICAL APPLICATION OF FUNCTIONAL PUBLICATIONS IN JOURNALS NANOPARTICLE: 1) Inhibition of protein aggregation by iron oxide nanoparticles i) Advanced fluorescent imaging nanoprobes have been conjugated with glutamine- and proline-based osmolytes- N designed to label cells and subcellular compartments. Pradhan, Nihar R Jana and N R Jana, ACS Appl. Nano Mater., 1, ii) Nano-vitamin C has been designed for oxidative stress- 1094 (2018).[IF = not known] induced cell death via high dose cell delivery of vitamin C. 2) Biomolecule-derived fluorescent carbon nanoparticle as bioimaging probe. -- H Ali, S Ghosh and N R Jana, MRS iii) Aggregation induced emission active molecule-based Advances, 3, 779 (2018).[IF = not known] nanoprobes have been synthesized as fluorescent cell label. 3) Nanoscale heterogeneities drive enhanced binding and iv) Trehalose, glutamine and proline conjugated nanoparticles anomalous diffusion of nanoparticles in model biomembranes- R have been designed forinhibiting amyloid aggregation and Chelladurai, K Debnath, N R. Jana and J K Basu, Langmuir, 34, lowering of amyloidogenic cytotoxicity. 1691 (2018).[IF:3.833]

v) Nitrogen and fluorine codoped TiO2nanoparticle has been 4) Plasmonic photocatalysis: Complete degradation of bisphenol designed for visible light photodegradation of endocrine A by gold nanoparticle-reduced graphene oxide composite disrupting chemicals. under visible light- H Ali and N R Jana, Photochemical and Photobiological Sciences, Accepted, 17, 628(2018).[IF:2.235] 5) Functionalized chitosan with self-assembly induced and subcellular localization-dependent fluorescence ‘switch on’ property- K Mandal, D Jana, B K Ghorai and N R Jana, New J. Chem., 42, 5774 (2018).[IF:3.277]

6) Nitrogen and fluorine codoped, colloidal TiO2 nanoparticle: Tunable doping, large red shifted band edge, visible light induced photocatalysis and cell death- A Biswas, A Chakraborty and N R Jana, ACS Appl. Mater. Interfaces,10, 1976 (2018).[IF:7.504] 7) Supramolecular host-guest chemistry-based folate/riboflavin functionalization and cancer cell labeling of nanoparticle- S Pal, C Dalal and N R Jana, ACS Omega, 2, 8948 (2017).[IF = not Fluorescence microscopic image of KB cells labeled with carbon known] nanoparticle prepared from folic acid. 8) Vitamin C conjugated nanoparticle protects cells from oxidative stress at low dose but induces oxidative stress and cell death at high dose - A Chakraborty and N R Jana, ACS Appl. Mater. Interfaces, 9, 41807 (2017).[IF:7.504]

037 9) Trehalose functionalized gold nanoparticle for inhibiting in- PUBLICATIONS IN BOOKS/BOOK CHAPTER/ tracellular protein aggregation- S Mandal, K Debnath, Nihar R MONOGRAPHS : Jana and Nikhil R Jana, Langmuir, 33, 13996 (2017).[IF:3.833] 1) Chemical Functionalization of Nanoparticle for Different 10) Quantum dot-based designed nanoprobe for imaging lipid Applications- C Dalal and N R Jana, Wandelt, K. (Ed.) droplet- S Mandal and N R Jana, J. Phys. Chem. C, 121, 23727 Encyclopedia of Interfacial Chemistry Surface Science and (2017).[IF:4.536] Eletrochemistry, Vol 4, pp 604-613, 2018. 11) Multivalency effect of TAT peptide functionalized nanoparticle in cellular endocytosis and subcellular trafficking- C Dalal, N R LECTURES DELIVERED : Jana, J. Phys. Chem. B, 121, 2942 (2017).[IF:3.177] Invited talk at (1) MRS fall meeting at Boston, USA, (2) ACS Editorial Board Meeting, Shanghai, China, (3) ICFNN-2017, 12) Poly (trehalose) nanoparticles prevent amyloid aggregation Kathmandu, Nepal, (4) ICANN2017, IIT-Guwahati, (5) NFM- and suppress polyglutamine aggregation in a Huntington’s 2017, Bits Pilani, (6) RAFINC-2017, IIT, Kharagpur, (7) NCEM- disease model mouse. -- K Debnath, N Pradhan, B K Singh, 2018, Assam University, Silchar. Nihar R Jana, Nikhil R Jana, ACS Appl. Mater. Interfaces,9, 24126 (2017).[IF:7.504] SPONSORED PROJECT 13) Hyperbranched polyglycerol grafting on the surface of silica • Nanodrug formulation ………. Of Huntington’s disease coated nanoparticle for high colloidal stability and low non- specific interaction-P Panja, P Das, K Mandal and NR Jana, ACS • Nanotechnology based selective ….. Contaminated Water Sustainable Chem. Eng.,5, 4879 (2017).[IF:5.951] • Development ….. Detction (DST-SERB) 14) Multivalent gold nanoparticle–peptide conjugates for targeting intracellular bacterial infections- R Chowdhury, H Ilyas, A Ghosh, H Ali, A Ghorai, A Midya, N R Jana, S Das, A Bhunia, Nanoscale, 9, 14074 (2017).[IF:7.367]

Somobrata Acharya Associate Professor Planar materials, heterostructures, assemblies and energy related applications. Associates : (1) B Pradhan (Institute), (2) S Gundam, SRF (Inspire), (3) P Sarkar, SRF (Inspire), (4) S Biswas, JRF (CSIR), (5) J Pradhan, JRF (Inspire), (6) T Kamilya, JRF (UGC), (7) D Roy, JRF (UGC) and (8) P Mandal, JRF (Inspire)

COUPLED QUANTUM DOT, SUPERLATTICE, ASSEMBLY, PUBLICATIONS IN JOURNALS TUNNELING, TRANSPORT AND PHOTOVOLTAICS: 1. Size tunable cesium antimony chloride perovskite nanowires The prime motivation of Acharya’s group is explore the structure- and nanorods -B Pradhan, GSandeepKumar, S Sain, A Dalui, properties relationship of a variety of nanomaterials. The group U Ghorai, SPradhan and SAcharya,Chemistry of Materials,30, has got the expertise to synthesis a variety of nanomaterials, 2135, (2018).[IF:9.4] to characterize structures, properties and depending on that, 2. Mesoporous fullerene C70 cubes with highly crystalline to fabricate a suitable devise. Superfine nanocrystals with a frameworks and unusually enhanced photoluminescence target to reach atomic scale dimension are prepared. Complex properties - P Bairi, T Tsuruoka, S Acharya, Q Ji, Jonathan P Hill, heterojunctions and planar materials are the major subject K Ariga, Y Yamauchi and Lok Kr Shrestha Materials Horizons 5, of interest of Acharya’s group. Creating multi-dimensional 285 (2018).[IF:10.7] assemblies of nanocrystals and molecules are of interests. The 3. Enhancing performances of hybrid perovskite light emitting research of Acharya’s group is directed towards energy generation diodes with thickness controlled PMMA interlayer -G Sandeep and savings using nanomaterials and functional molecules. Kumar, B Pradhan, T Kamilya and S Acharya, Bulletin of the Chemical Society of Japan(doi:10.1246/bcsj.20180102) [IF :2.21]

038 4.Supramolecular aggregates of tetraphenylethene cored AIEgen SPONSORED PROJECT towards mechanoluminescent and electroluminescent devices - • Multi-Color Electroluminescent…… Active Elements (DST- S Biswas, D Jana, G Sandeep Kumar, S Maji, P Kundu, U Kr SERB) Ghorai, R P Giri, B Das, N Chattopadhyay, B K Ghorai and S Acharya, ACS Applied Materials & Interfaces, DOI: 10.1021/ LECTURES DELIVERED : acsami.8b00165.[IF:7.5] Invited talk at (1) IACS, Kolkata, (2) ICMAT-2017, Singapore, (3) Chemistry of Materials-2017, Kerala, (4) ICFNN-2017, PUBLICATIONS IN BOOKS/BOOK CHAPTER/ Kathmandu, Nepal, (5) NFM-2017, BITS Pilani, (6) 9th AICS MONOGRAPHS : APCTP Joint activity meeting, Kolkata, (7) SINP, Kolkata, (8) 1.Aspects of One-dimensional Nanostructures: Synthesis, Indo-US Meeting, SINP, Kolkata, (9) Raiganj University, (10) Characterization and Applications Amit Dalui, Ali Hossain Khan, Don Bosco University, Guwahati, (11) IIT, New Delhi, (12) INST, BapiPradhan, Srabanti Ghosh and Somobrata Acharya - Materials Mohali and (13) 2nd MANA Reunion Workshop, Tsukuba, Nanoarchitectonics; Publisher: Wiley-VCH Verlag GmbH & Co. Japan. KGaA, Weinheim (Book Chapter, 33-83, 2017) NON-FACULTY MEMBERS : Ph.D. DEGREE AWARDED : Dr. Sima Roy, PDF :Synthesis of nanocrystal 1. S. Maji (CU)

039

Centre for Mathematical, Computational & Data Science

Department Profile People Faculty : 03 Ph.D. Students : 11 Non-Academic Staff : 02

Extra Mural Funding Projects (ongoing) : 01 Academic Activities Tanusri Saha-Dasgupta Talks delivered by members of department in conferences/symposia (National) : 10 Head of the Department Talks delivered by members of department in conferences/symposia (International) : 04

041 Tanusri Saha-Dasgupta (Joined on Nov 2017) Senior Professor, Satyendra Nath Chair Professor and Head Computational Condensed Matter Physics and Materials Science Associates : (1) S Karmakar, JRF, (2) S Ghosh, JRF

The research activity of Tanusri Saha-Dasgupta involved half-metals, the Fe-Rh compounds were found to be rare computer prediction of new compounds with novel magnetic examples of antiferromagnetic and metallic transition-metal properties, understanding the properties at graphene-oxide oxide with three-dimensional electronic structure. The computed interface, pressure induced metal-insulator transition of magnetic transition temperatures of the predicted compounds, perovskites, electronic structure of osmate compounds. obtained from finite temperature Monte Carlo study of the In a specific research work, combination of evolutionary first principles derived model Hamiltonian, were found to be algorithm, density functional theory, and statistical-mechanical reasonably high. The prediction of favorable growth condition tool (see figure) was used to make computer prediction of the compounds, as reported in this work, obtained through of structural, electronic and magnetic properties of yet-to- extensive thermodynamic analysis should be useful for future be synthesized Rh based double perovskite compounds, synthesize of this interesting class of materials with intriguing Sr(Ca)2BRhO6 (B = Cr, Mn, Fe). Interestingly, while the Cr-Rh properties. and Mn-Rh compounds were predicted to be ferromagnetic

Caption: The flow-chart for the computational prediction of six new magnetic compounds

PUBLICATIONS IN JOURNALS of the Physical Society of Japan, 87 , 041007 (2018).[IF:2.572] 1. Computer predictions on Rh-based double perovskites 4. Experimental and theoretical studies of the metallic with unusual electronic and magnetic properties - A Halder, conductivity in cubic PbVO3 under high pressure - K Oka, D Nafday, P Sanyal and T Saha-Dasgupta, npj Quantum T Yamauchi, S Kanungo, T Shimazu, K Oh-ishi, Y Uwatoko, Materials – Nature,3, 17 (2018).[IF:] Masaki Azuma and Tanusri Saha-Dasgupta, Journal of the 2. Out-of-plane interface dipoles and anti-hysteresis in Physical Society of Japan 87 (2), 024801 [IF: 2.572] graphene-strontium titanate hybrid transistor - A Sahoo, D 5. Canted antiferromagnet superimposed on a buckled Nafday, T Paul, R Ruiter, A Roy, M Mostovoy, T Banerjee and kagomé network in RbMn4 (PO4) 3-Olga Yakubovich, Galina Tanusri Saha-Dasgupta, Arindam Ghosh, npj 2D Materials and Kiriukhina, Larisa Shvanskaya, Olga Maximova, AnatoliyVolkov, Applications – Nature, 2, 9 (2018).[IF:] Olga Dimitrova, EvgeniyOvchenkov, Oleg Yumashev, AsifIqbal, 3. Comparative study of electronic structure and magnetic Badiur Rahaman, Tanusri Saha-Dasgupta and Alexander Vasiliev; properties of osmate double perovskites : Ca2FeOsO6 versus ActaCryst. C74, 641 (2018). [IF:4.099] Ca2Co (Ni) OsO6 - K Samanta and T Saha-Dasgupta, Journal

042 AWARD / RECOGNITION LECTURES DELIVERED: • Member of Nano-mission Apex Committee, DST Invited talk at (1) IWAM-2017, Drexel University, Philadelphia, USA, (2) Workshop on advanced materials, UAE, (3) Physics • Member of Scientific Council of Indo-French Centre for the and Chemistry of Materilas, Thimphu, Bhutan, (4) Workshop promotion of advanced research, DST at Central University of Tripura, (5) EPCQS18), SNBNCBS, • Dr. APJ Kalam HPC award 2018 Kolkata and (6) CTMSE-2018, Institute of Engineering & Management, Kolkata.

Debashree Ghosh (Joined on June, 2017) Associate Professor Computational quantum chemistry and electronic structure. Associates : (1) K Seth, JRF (2) SK Ghosh, JRF, (3) M Rano, JRF, (4) P Ghosh, JRF, (5) S Bose, SRF and (6) S Jana, JRF

The main areas of research of Debashree Ghosh was on and the properties of the ionized states were investigated for development and application of hybrid QM/MM methods for DNA bases and the nucleotides in aqueous environment. A the understanding of excited state properties of bio-molecules major progress was achieved towards the understanding of in complex environment. The major development work was photoprocesses in melanin monomers. The major reason for towards biased sampling techniques for faster convergence of the photostability of the melanin system was proposed to be excited state properties as well as a new evolutionary algorithm the structural heterogeneity of the system, which can absorb for computationally efficient calculation of multi-reference the photochemical stress on the molecules. A new direction of systems. The extension of this work towards excited states is research in line with the center towards data driven force fields also in progress. was initiated. The first manuscript describing this work has been Furthermore, these methods and other state-of-the-art communicated. The group has been working on developing electronic structure methods were used to understand the origin regression based approaches for force fields of molecules. The of the spectroscopic shifts in the fluorescent proteins, and the transferability of the force field was achieved via many body fluorescent chromophores in RNA. The ionization energies expansions.

Caption: The hybrid QM/MM methods developed in the group are capable of addressing excited state systems, modeling non-covalent interactions.

043 PUBLICATIONS IN JOURNALS 4.Elucidating the Photoprotection mechanism of eumelaninmonomers – PGhosh and D Ghosh; J. Phys. Chem. 1.Evolutionary algorithm based configuration interaction B, 121(24), 5988 (2017).[IF:3.177] approach – R Chakraborty, P Ghosh and D Ghosh; Int. J. Quant. Chem., 118(6), 25509 (2018).[IF:2.92] 5. Electrostatic origin of the red solvatochromic Shift of DFHBDI in RNA spinach – S Bose, S Chakrabarty and D Ghosh;J. Phys. 2. Effect of solvation on the ionization of guanine nucleotide Chem. B, 121(18), 4790 (2017).[IF: 3.177] : A hybrid QM/MM study – R Chakraborty, S Bose and D Ghosh; J. Comput. Chem., 38(29), 2528 (2017).[IF: 3.229] 6. The nature of selenium hydrogen bonding : Gas phase spectroscopy and quantum chemistry calculations – K K 3. An interaction energy driven biased sampling technique : Mishra, S K Singh, P Ghosh, D Ghosh and A Das;Phys. Chem. A faster route to ionization spectra in condensed phase – S Chem. Phys., 19, 24179 (2017).[IF:4.123] Bose and D Ghosh; J. Comput. Chem., 38(26), 2248 (2017). [IF:3.229] 7.Unprecedented solvent induced inter-conversion between monomeric and dimericsilylene-sinc iodide adducts – S Yadav, E Sangtani, D Dhawan, R G Gonnade, D Ghosh and S S. Sen; Dalton Trans., 46, 11418 (2017).[IF:4.029]

AWARD / RECOGNITION LECTURES DELIVERED: • Humboldt Experienced Researcher Fellowship, Humboldt Invited talk at (1) 11th World association of theoretical & Foundation computational chemists, Germany, (2) Physical Chemistry • Carl Frederich von Siemens Fellowship Colloquium, Ludwig MaxmillianUniversitat, Munich, Germany, • Member, Editorial Board of International Journal of (3) APCTCC8, Mumbai, (4) NISER-Bhubaneswar, (5) IACS- Quantum Chemistry (Wiley) upon invitation, 2018 CESSD, Kolkata, (6) RAMOLs, Bangalore, (7) Kaleidoscope – A discussion meeting, Goa.

044 Avisek Das (Joined on December, 2017) Faculty Fellow Computational study of molecular biophysics, soft matter, rare event phenomena Associates : (1) R Adhikary, JRF, (2) S Kundu, JRF and (3) S Ghosh, Project Assistant

The research of Avisek Das involved extensive computer protonation configurations at the binding sites revealed how simulation based on molecular dynamics to understand ATP- deprotonation events affect the opening of the cytoplasmic driven active transport. The calcium pump of the sarcoplasmic gate. The results showed that there is a strong coupling reticulum (SERCA) is an ATP-driven active transporter of Ca2+ between the chronological order of deprotonation, the entry ions that functions via an “alternating-access” cycle mechanism. of water molecules into the TM region, and the opening of the In each cycle, SERCA transports two Ca2+ ions toward the cytoplasmic gate, as illustrated in the figure. Deprotonation of lumen of the sarcoplasmic reticulum, and 2-3 protons to the E309 and E771 is sequential with E309 being the first to lose cytoplasm. How the latter conformational transition is coupled to the proton. The deprotonation promotes the opening of the cytoplasmic release of protons remains poorly understood. The cytoplasmic gate, but leads to a productive gating transition computational study of Avisek Das showed how the mechanism only if it occurs after the transmembrane domain has reached of proton countertransport is coupled to the gating process in an intermediate conformation. Deprotonation of E309 and SERCA. In particular, molecular dynamics simulation trajectories E771 is unproductive when it occurs too early because it causes were generated starting from a series of configurations taken the re-opening of the luminal gate. along the E2 to E1 transition pathway determined by the string method with swarms-of-trajectories. Simulations of different

Main conformational changes occurring in TM region and cytoplasmic domains during the E2-E1 transition

045

DiRECTOR’s research unit

Department Profile People Faculty : 01 Post-doctoral Research Associate : 03 Ph.D. Students : 09 Non-Academic Staff : 04

Extra Mural Funding Santanu Bhattacharya Projects (ongoing) : 01 Director and Head Research Achievements of the Department Ph.D. degree awarded : 02 Patent Filed : 04 Academic Activities Talks delivered by members of department in conferences/symposia (National) : Several Talks delivered by members of department in conferences/symposia (International) : Several

047 Santanu Bhattacharya, FNA, FASc, FTWAS Senior Professor, Head and Director Chemical Biology, Biological Membranes, Supramolecular Chemistry, Soft Materials, Molecular Probes, Chemistry of Materials & Biomaterials, Nanoscience and Nanotechnology. Associates : (1) Dr. P Moitra, Scientist D (TRC), (2) Dr. A Pradhan (DST Inspire Faculty), (3) Dr. B Maiti, RA-I (Institute), (4) S Bhunia, SRF (CSIR), (5) B Patra, SRF (Inspire), (6) P Saha, SRF (CSIR), (7) U Yadav, SRF (CSIR), (8) S Sarkar, JRF (Inspire), (9) S Dutta, JRF (CSIR), (10) D Gupta, JRF (UGC), (11) N Chakraborty, JRF (CSIR) and (12) S K Sujauddin (Int. PhD. student)

The research in DRU during the year 2017-18 was focused on interdisciplinary approaches involving biology, soft matter and supramolecular chemistry. In the field of chemical biology, several stimuli-sensitive molecules, like -tocopherylated cationic gemini lipids with hydroxyethylheadgroups, reduction responsive -tocopheryl-lipoic acid conjugates and pH- responsive gemini lipid derived co-liposomes were prepared for efficacious gene/drug delivery preferentially to the cancer cells. A series of novel materials were also developed for the selective sensing of bio-analytes like human serum albumin, trypsin, aluminium, nerve agent stimulant, caffeine, uric acid, D-(-)- ribose and histamine etc. Also a flavonoid and dehydrorotenoid were identified from plant extract and demonstrated as potent inhibitor of Hepatitis C virus entry. New benzimidazole-carbazole ligands were synthesized for selective targeting of G-quadruplex DNA structures prevalent in the telomere and oncogene promoter regions. Novel azo-quinoline complexes were shown to enhance photonuclease activity in human cancer cells. New oligopyrrolecarboxamides were developed to knockdown the gene expression of Bombyx mori which eventually enhanced the production of silk. The i-motif structure in the human acetyl-CoA carboxylase 1 gene Schematic illustration of (a) motion-induced changes in emission for the promoter was characterized and its role was identified in the ratiometric probing of human serum albumin and trypsin in biological regulation of gene expression. It was also understood that the fluids; (b) nanomolar level detection of uric acid in blood serum and regulation of transcriptionof CDKN1A (p21/CIP1/WAF1) by pest-infested grain samples; (c) reduction responsive nanovesicles for TRF2 is epigenetically controlled through the REST repressor efficacious drug delivery to sensitive and drug resistant cancer cells; complex. On the other hand, pyrene-porphyrin based crystalline (d) electrochemical stimuli-driven facile metal-free hydrogen evolution covalent organic framework was also developed for metal-free from pyrene-porphyrin-based crystalline covalent organic framework; hydrogen evolution. (e) targeting G-quadruplex DNA structures in the telomere and oncogene promoter regions by benzimidazole-carbazole ligands; and (f) enhanced photonuclease activity in human cancer cells mediated by ruthenium azo-quinoline complexes.

048 PUBLICATIONS IN JOURNALS B Maji, S Pasadi, S Bhattacharya and K Muniyappa, Eur. J. Med. 1. Structural characterization of i-Motif structure in the human Chem., 139, 1016 (2017).[IF:4.519] Acetyl-CoA carboxylase 1 gene promoters and their role in the 13. Nanomolar level detection of uric acid in blood serum and regulation of gene expression – K Muniyappa, M H Kaulage and pest-infested grain samples by an amphiphilic probe – N Dey S Bhattacharya, ChemBioChem, 19, 1078 (2018).[IF:3.088] and S Bhattacharya, Anal. Chem., 89, 10376.(2017) [IF:6.320] 2. Targeting G-quadruplex DNA structures in the telomere and 14. Fluorescent organic nanoaggregates for selective recognition oncogene promoter regions by benzimidazole-carbazole ligands of D-(-)-ribose in biological fluids and oral supplements – N Dey – M H Kaulage, B Maji, S Pasadi, A Ali, S Bhattacharya and K and S Bhattacharya, Chem. Eur. J., 23, 16547 (2017).[IF:5.317] Muniyappa, Eur. J. Med. Chem., 148, 178 (2018).[IF:4.519] 15. Identification of a flavonoid isolated from plum 3. Transfection efficiencies of -tocopherylated cationic gemini (Prunusdomestica) as a potent inhibitor of Hepatitis C virus entry lipids with hydroxyethyl bearing headgroups under high serum – M Bose, M Kamra, R Mullick, S Bhattacharya, S Das and A A conditions – B Maiti, M Kamra, A A Karande and S Bhattacharya, Karande, Sci. Rep., 7, 3965 (2017).[IF:4.259] Org. Biomol. Chem., 16, 1983 (2018).[IF:3.564] 16. Electrochemical stimuli-driven facile metal-free hydrogen 4. Motion-Induced changes in emission as an effective strategy evolution from pyrene-porphyrin-based crystalline covalent for the ratiometricprobing of human serum albumin and trypsin organic framework –S Bhunia, S K Das, R Jana, SC Peter, S in biological fluids – N Dey, B Maji and S Bhattacharya, Chem. Bhattacharya, M Addicoat, A. Bhaumik, and A Pradhan, ACS Asian J., 13, 664 (2018).[IF:4.083] Appl. Mater. Interfaces, 9, 23843 (2017).[IF:7.504] 3+ 5. Trace level Al detection in aqueous media utilizing 17. A plant-derived dehydrorotenoid: a new inhibitor of hepatitis luminescent ensembles comprising pyrene laced dynamic C virus entry - M Bose, M Kamra, R Mullick, S Bhattacharya, S surfactant assembly – N Dey and S Bhattacharya, Dalton Trans., Das, and A A Karande, FEBS Lett., 591, 1305 (2017).[IF:3.519] 47, 2352 (2018).[IF:4.029] 18. Dual-Mode optical sensing of histamine at nanomolar 6. Reduction responsive nanovesicles derived from novel concentrations in complex biological fluids and living cells - N -tocopheryl-lipoic acid conjugates for efficacious drug delivery Dey, A Ali, S Podder, S Majumdar, D Nandi and S. Bhattacharya, to sensitive and drug resistant cancer cells – B Maiti, K Kumar, P Chem. Eur. J., 23, 11891 (2017).[IF:5.317] Moitra, P Kondaiah and S Bhattacharya, Bioconjugate Chem., 19. Knockdown of broad-complex gene expression of 29, 255 (2018).[IF:4.818] bombyxmori by oligopyrrole carboxamides enhances silk 7. Tunable emission from fluorescent organic nanoparticles in production - A Ali, V R Bovilla, D K Mysarla, P Siripurapu, R U water: Insight into nature of self-assembly and photoswitching – Pathak, B Basu, A Mamillapalli, and S Bhattacharya, Sci. Rep., A Gulyani, N Dey and S Bhattacharya, Chem. Eur. J., 24, 2643 7, 805 (2017).[IF:4.259] (2018).[IF:5.317] 8. Visual detection of a nerve agent simulant using chemically Ph.D. DEGREE AWARDED : modified paper strips and dye-assembled inorganic (1) Nilanjan Dey (IISc), (2) Mohini Kamra (IISc) nanocomposite – N Dey, S Jha and S Bhattacharya, Analyst, 143, 528 (2018).[IF:3.885] PATENT FILED : 9. A versatile probe for caffeine detection in real-life samples • A reusable charge transfer based agrogel. Santanu via excitation-Triggered alteration in the sensing behavior of Bhattacharya, Subham Bhattacharjee, Dipen Biswakarma, fluorescent organic nanoaggregates – N Dey, B Maji and S Deepa Bhagat. Indian patent applied (application number Bhattacharya, Anal. Chem., 90, 821 (2018).[IF:6.320] 201741016464) PCT NO. PCT/IN2018/050292 10. New pH-responsive gemini lipid derived co-liposomes for • Method And Device For Rapid Detection of HearNPV. efficacious doxorubicin delivery to drug resistant cancer cells Santanu Bhattacharya, Nilanjan Dey, Deepa Bhagat. Indian – P Moitra, K Kumar, S Sarkar, P Kondaiah, W. Duan and S patent applied (application number 2017 41019790) Bhattacharya, Chem. Commun., 53, 8184 (2017).[IF:6.319] • A kit for specific detection of SlNPV. Santanu Bhattacharya, 11. Transcription regulation of CDKN1A (p21/CIP1/WAF1) by Nilanjan Dey, Dipen Biswakarma, Deepa Bhagat. Indian TRF2 is epigenetically controlled through the REST repressor patent applied (application number 201741040904) PCT complex – T Hussain, D Saha, G Purohit, A Kar, A K Mukherjee, NO. PCT/IN2018/050365 S Sharma, S Sengupta, P Dhapola, B Maji, S Vedagopuram, N • A novel Turn-on Probe for Easy, Rapid and Accurate T Horikoshi, N Horikoshi, R K Pandita, S Bhattacharya, A Bajaj, Quantification of Human Serum Albumin Present in J-F Riou, T K Pandita and S Chowdhury, Sci. Rep., 7, 11541 Biological Fluides, Santanu Bhattacharya, P Moitra, P Saha (2017).[IF:4.259] and U Bhattacharjee, TIFAC, 2018

12. Novel ruthenium azo-quinoline complexes with enhanced SPONSORED PROJECT : photonuclease activity in human cancer cells – M H Kaulage, J C Bose Fellowship (DST)

049

ENERGY RESEARCH UNIT

Department Profile People Faculty : 01 Ph.D. Students : 11 Non-Academic Staff : 02

Debajyoti Das Research Achievements Head of the Department Ph.D. degree awarded : 01

051 NANOCRYSTALLINE SILICON SOLAR CELLS USING 27.12 MHZ RF

SIH4 PLASMA : Nanocrystalline silicon solar cells with silicon quantum dots and super- lattice structures are being explored in view of their reduced light induced degradation, improved efficiency and stable performance. Silicon solar cells with multiple combinations of superlattice structures with different dielectric barrier layers are expected to evolve as a better outlet for multi-junction solar cells wherein use of multiple absorber layers of varied optical gaps enable optimum utilization of solar spectrum and, thereby, enhances conversion efficiency. Growth of highly conducting nanocrystalline silicon (nc-Si) thin films of optimum crystalline volume fraction, involving dominant <220> crystallographic preferred orientation with simultaneous low fraction of microstructures at a low substrate temperature and high growth rate, is a challenging task for its promising utilization in nc-Si solar cells. Utilizing enhanced electron density and superior ion flux densitiesof the high frequency (~27.12 MHz) SiH plasma, improved nc-Si films have been Debajyoti Das 4 produced by simple optimization of H2-dilution, controlling the ion damage Senior Professor & Head and enhancing supply of atomic-hydrogen onto the growing surface. Single junction nc-Si p–i–n solar cells have been prepared with i–nc-Si absorber SiH4 plasma by RF-Glow Discharge in Capacitively-coupled and layer and optimized. The physical parameters of the absorber layer have Inductively-coupled PECVD; Nano- been systematically correlated to variations of the solar cell parameters. crystalline Silicon, Silicon Quantum- The preferred <220> alignment of crystallites, its contribution to the low Dots, quantum-wires & superlattice recombination losses for conduction of charge carriers along the vertical structures, wide band gap and photo- direction, its spectroscopic correlation with the dominant growth of ultra- luminescent nanostructured materials nanocrystalline silicon (unc-Si) component and corresponding longer e.g., nc-SiC:H, nc-SiN:H&nc-SiO:H wavelength absorption, especially in the neighborhood of i/n–interface for applications in quantum-effect region recognize scientific and technological key issues that pave the ground devices; Narrow band gap nc-SiGe:H for imminent advancement of multi-junction silicon solar cells. for infrared absorption in solar cells; Development and characterization of nano-structured carbon materials e.g., DLC, nano-diamond, CNT and Graphene, by MW-CVD and Magnetron Sputtering; Nanostructured wide band gap conducting oxide films, e.g., ZnO, In2O3:Sn, SnO2; Fabrication & characterization of multi-junction silicon Solar Cells with amorphous and nanocrystalline combination; TiO2 and ZnO nanorods for photocatalytic applications. Associates : (1) P Mondal (SRF, Resigned on CONTROLLING THE OPTO-ELECTRONIC PROPERTIES OF November, 2017), (2) S Samanta, UNDOPED AND DOPED NC-SIOXH FILMS:

SRF,(3) A Roy, SRF, (4) L Karmakar, SRF, A systematic development of undopednc-SiOx:H thin films from (SiH4 +

(5) P Makal, SRF, (6) P Nandi, SRF, (7) K CO2) plasma diluted by a combination of H2 and He has been investigated Sarkar, JRF, (8) A Dey, JRF, (9) C Patra, through structural, optical and electrical characterization and correlation. JRF, (10) S Saha, JRF and (11) P Sahu Gradual inclusion of O into a highly crystalline silicon network progressively (JRF) produces a two-phase structure where Si-nanocrystals (Si-nc) are embedded into the a-SiOx:H matrix. However, at the intermediate grain boundary region the growth of ultra-nanocrystallites controls the effectiveness of the material. The ultra-nanocrystallites are the part and portion of

052 crystallinity accommodating the dominant fraction of THE GROWTH OF ZnO:GA: CU AS NEW TCO FILM: thermodynamically preferred <220> crystallographic Because of having similarities in many physical as well as orientation, most favourable for stacked layer device performance. chemical properties to those of Zn, Cu has been strategically Atomic H plays a dominant role in maintaining an improved used as an effective dopant e.g., Al, Ga, F, etc., to change the nanocrystalliny in the network even during O inclusion, while optical, electrical and the micro-structural properties of ZnO thin He in its excited state (He*) maintains a good energy balance films for obtaining its favorable opto-electronic performance as at the grain boundary and produces a significant fraction of a transparent conducting oxide suitable for devices. Present study ultra-nanocrystalline component which has been demonstrated demonstrates the growth of transparent conducting ZnO:Ga:Cu to organize the energetically favourable<220> crystallographic thin films, by low power RF magnetron sputtering at a low substrate orientation in the network. The nc-SiOx:H films, maintaining temperature (100 °C). Highly crystalline ZnO:Ga:Cu film with proportionally good electrical conductivity over an wide range preferred c-axis orientation has been obtained demonstrating a of optical band gap, remarkably low microstructure factor high magnitude of transmission ~85% in the visible range and and simultaneous high crystalline volume fraction dominantly a high electrical conductivity ~40 S cm–1, facilitated by large populated by ultra-nanocrystallites of <220> crystallographic crystallite size (~29 nm), introducing reduced grain boundary orientation mostly at the grain boundary, have been obtained in scattering. XPS technologically most popular 13.56 MHz PECVD SiH4 plasma O 1S spectrum reveals the presence of a significant fraction of even at a low substrate temperature ~250°C, convenient for oxygen atoms effectively increasing the optical transparency. device fabrication. The incorporation of O into the Si network Incorporation of Ga and Cu ions into the ZnO matrix promotes occurs via the Si–O–Si bond which is effectively responsible for violation of the local translational symmetry as suggested by the widening of optical band gap. In the fabrication of p–type nc- the relaxation of Raman selection rules for the network, evident SiOx:H material B incorporation takes place via the B–Si bonds by the presence of strong (B1high – B1low) modes which are as well as the B–O bonds. The continuously increased intensity typically Raman inactive.The consequences of Cu doping has of (SiH2)n wagging and Si-H2 bending mode in p–nc-SiOx been compared with identically prepared ZnO and ZnO:Ga films indicates poly-hydrogenation as inherent to the increasing films. oxygen alloying of the network.The p–nc-SiOx film optimized with a convincingly good combination of the electrical conductivity, DIAMOND-LIKE-CARBON, NANO-DIAMOND AND optical band gap and volume fraction of the Si crystallinity, CARBON NANO-TUBE THIN FILMS: emerges highly competent for effective utilization in the window Synthesis and characterize of various nanostructured carbon thin layer of nc-Si p–i–n solar cells with superstrate configuration. films e.g., diamond-like-carbon (DLC), nanocrystalline diamond, carbon nanotube, etc. Aiming towards a specific application SILICON THIN FILM SUPERLATTICE GROWN AT LOW as antireflection coatings (ARC) in Si solar cells, the growth TEMPERATURE: of hydrogenated diamond like carbon (HDLC) films has been

The growth of nc-Si:H from the SiH4 plasma inherently proceeds optimized on unheated substrates, by RF Magnetron Sputtering, through a defective and amorphous incubation layer, originating through systematic variations of RF power, gas flow rate, gas due to the lattice mismatch between the substrate and Si material. pressure and finally controlled introduction of hydrogen to the In the current investigation, a-Si:H/nc-Si:H thin film super- DLC network at its most favorable plasma parameters. Various lattice structures have been fabricated at very low temperature physical properties of the films have been correlated with different (~180°C), using single step conventional plasma processing. ARC application properties. By pursuing the growth under In this intriguing technique the a-Si:H barrier sub-layer itself secondary plasma of (CH4+H2) generated within stainless steel operates as an effective incubation layer which facilitates growing grid-like multiple mask assembly, while simultaneously protecting the nc-Si:H active sub-layer possessing adequate crystallinity the surface from vigorous high energy ionic bombardments in '!%$'1\ Microwave-PECVD, the nanocrystalline diamond (NCD) thin discontinuity in growth of the active layer confines the size of Si- films were obtained on unheated substrates at elevated MW ncs within the dimension of this active sub-layer thickness. The power and optimum H2-dilution. Multiwall carbon nanotubes superlattice structure of the ultimate network has been evidenced (MW-CNTs) have been prepared in a microwave-plasma from small angle XRD (SAX) measurements, whereas the nature of enhanced CVD (MWPECVD) tubular system at a low temperature crystallinity has been studied by ellipsometry, Raman spectroscopy ~300 °C from CH4+H2 plasma with the addition of CO2 using and electron microscopy. This simple yet compelling technique as a week oxidant to selectively remove the amorphous carbon seems to have enormous technological implications taking the component and promote the CNT growth. CNTs are typically advantage of the quantum confinement effect in low dimensional with outer diameter ~20 nm, inner diameter ~10 nm of several silicon nano-crystallites within very thin superlattice structures. μm in length and are grown via the tip growth process, bearing

Fe catalyst nano-particles at the tip. The presence of CO2 as a weak oxidant in the plasma may influence in reducing the size of the support catalyst nano-particles and narrowing the CNTs with aligned multiwalls.

053 TITANIUM DIOXIDE B-PHASE NANOWIRE FOR 10. Development of optimum p-nc-Si window layers for nc- PHOTOCATALYTIC APPLICATIONS: Si solar cells - P Mondal and D Das; Phys. Chem. Chem. Phys.,1921357 (2017).[IF:4.123] TiO2-Bronze phase nanowires have been synthesized by hydrothermal method. The influence of post hydrothermal 11. Anti-friction diamond-like carbon nanocoatings for annealing temperature on the formation of TiO2–B NWs has advanced tribological applications - S Singh, A Banerjee, D been explored. X-ray diffraction results indicate that the TiO2 Das and R Sahoo; AIP Conf. Proc.,1832 80036-1–3(2017). NWs consist of Bronze phase (B) only. Transmission electron 12. Enhancement of multiferroic properties and unusual magnetic microscope (TEM) images further confirm the formation of phase transition in Eu doped bismuth ferrite nanoparticles - M TiO –B nanowire structure oriented towards dominant <001> 2 Banerjee, A Mukherjee, A Banerjee, D Das and S Basu; New J. and <110> directions. The optical study reveals that the Chem.,4110985 (2017).[IF:3.269] absorption edge red shifted towards longer wavelength with increase in annealing temperature. Band gap narrowing 13. Controlling the opto-electronic properties of nc-SiOx:H films enhances absorption of solar spectrum and oriented growth by promotion of (220) orientation in ultra-nanocrystallites at the towards dominant <001> and <110> directions. Coupling grain boundary - D Das and S Samanta; Appl. Surf. Sci.,428 of intrinsic channels and the preferentially exposed [010] 757 (2018).[IF:3.387] facets introduces open channels in metastable TiO2–B which may enhance photocatalytic activity due to large surface Ph.D. DEGREE AWARDED : area creating adsorptive and reactive sites to accelerate the (1) Praloy Mondal (CU) reactions. LECTURES DELIVERED : PUBLICATIONS IN JOURNALS Invited talk at (1) International Conference – ICN:3I-2017, IIT 1. The growth of ZnO:Ga:Cu as new TCO film of advanced Roorkee; (2) Dept. of Physics, IIT Roorkee. electrical, optical and structural quality - D Das and P Mondal; Physica E, 91 1 (2017).[IF:2.221] 2. Growth of highly aligned vertical Si-Nanorods and random Si-Nanowires by ICP-Plasma chemical etching of c-Si wafers - D Das and L Karmakar; AIP Conf. Proc., 1832, 50065-1–3. (2017). 3. Correlation between the physical parameters of the i–nc- Si absorber layer grown by 27.12 MHz plasma with the nc-Si solar cell parameters:D Das and PMondal; Appl. Surf. Sci.,416 980 (2017).[IF:3.387] 4. Structural characterization of silicon thin film superlattice grown at low temperature - D Kar and D Das; Superlat. and Microstruc.,111 385 (2017).[IF:2.123] 5. Metastable titanium dioxide B-phase nanowire prepared by hydrothermal method - P Makal and D Das; AIP Conf. Proc.,1832 50097-1–3. (2017). 6. Effect of oxygen on the optical, electrical and structural properties of mixed-phase boron doped nanocrystalline silicon oxide thin films - D Das and P Mondal; Appl. Surf. Sci.,423,1161 (2017).[IF:3.387] 7. Low temperature growth of carbon nanotubes with aligned multiwalls by microwave plasma-CVD - A Roy and D Das; AIP Conf. Proc,.1832 80028-1–3(2017). 8. Magnetic anomalies in Fe-doped NiO nanoparticle - R Pradeep, A C Gandhi, Y Tejabhiram, I.K.M.M. Sahib, Y Shimura, L Karmakar, D Das, S Y Wu and Y Hayakawa; Mat. Res. Exp.,4 096103(2017).[IF:1.068]

9. Black silicon prepared by H2 plasma etching of single crystal wafers in PECVD - L Karmakar and D Das; AIP Conf. Proc.,1832 80031-1–3(2017).

054

Department of Inorganic Chemistry

Department Profile People Faculty : 08 Post-doctoral Research Associate : 07 Ph.D. Students : 68 Non-Academic Staff : 05 Extra Mural Funding Projects (ongoing) : 18 Research Achievements Tapan Kanti Paine Ph.D. degree awarded : 06 Head of the Department Academic Activities Seminars organized : 06 Conference/Symposia/School organized : 01 Talks delivered by members of department in conferences/symposia (National) : 27 Talks delivered by members of department in conferences/symposia (International) : 11

056 Sreebrata Goswami, FASc, FNA Senior Professor and Dean (Administration and Finance) Transition metal complexes of redox active ligands: Search for their applications as catalyst and opto-electronic materials Associates : (1) D Sengupta, RA, (2) S P Rath, SRF, (3) R Pramanick, SRF, (4) M Chakraborty, SRF and (5) T Saha, SRF

To handle the data outburst of the current century, computing industry is looking for new memory technologies to replace commercial flash memories where resistive memory is one of the forerunners. While oxide based resistive memory devices are the key players at the moment, other systems, including organic devices has always been prominent research topics over the last 20 years but such devices never took off owing to their limitations in performance, questionable claims of reproducibility and the lack of scientific clarity on mechanisms. Our transition metal complexes are defining a new paradigm in the genre of organic devices. This project started in IACS in 2011 and subsequently got into the present shape in collaboration with Professor Venkatesan of NUSNNI, Nanocore. (a) Molecular view of the compound mer-[Ru(L)3](PF6)2 (L= 2(phenylazopyridine) (b) Schematic diagram of the device with the We have realized ligand redox of the compound, [Ru(pap)3] (PF6)2 in a film (<100nm) sandwiched between in two metal molecular film sandwiched between two electrodes (device-A). (c) electrodes where the electron injection or ejection is controlled Device structure of the device with nano-particle where a c-AFMtip is used a top electrode (device-B). (d) Current–voltage characteristics, J(V), by the electrode fermi levels, depending on the applied bias. orange cloud contains all (320 device data), (e) The current I and J(V) We are able to tune the film conductance by 5 orders of measured for device-B. Orange cloud shows data from 50 different magnitude (i.e. 105) by changing the inter-molecular hopping measurements performed at five different locations. rate in different redox states. The two primary contributions here are: (i) development of devices with ~100mV switching voltage, scalability till 7nm, switching speed lower than 30ns, PATENT FILED / AWARDED switching energy of ~100 atto joule, all of which exceed Resistive memory devices based on metal coordinated azo the industrial standards (ITRS-2015), (ii) we implemented in- aromatics - T Venkatesan, S Goswami, A Patra and S Goswami; situ spectroscopic techniques to understand the molecular (2017) US Provisional Patent (jointly with NUS) Provisional mechanisms in this system. Neither of these were ever achieved application number:201711034791. in an organic device. PUBLICATIONS IN JOURNALS SPONSORED PROJECT 1.Role of mediator and effects of temperature on ortho-C-N • JC Bose Fellowship (DST-SERB) bond fusion reactions of aniline using ruthenium templates : • Synergistic participation of redox…. Catalysis (DST-SERB) Isolation and charecterization of new ruthenium complexes of the In Situ generated ligand- S K Roy, DSengupta, S P Rath, T LECTURES DELIVERED Saha, S Samanta and S Goswami;Inorg. Chem., 56, 4966 Invited talk at (1) MTIC-XVII, NCL Pune; (2) TiTECH, Tokyo; (3) (2017).[IF:4.820] Chuo University, Tokyo; (4) Tokyo University; (5) Kyoto University; (6) Nagoya University; (7) Jadavpur University. 2.Robust resistive memory devices using solution-processable metal-coordinated azo aromatics-S Goswami, A J Matula, S P Rath, S Hedström, S Saha, M Annamalai, D Sengupta, A Patra, S Ghosh, H Jani, S Sarkar, M R Motapothula, C A Nijhuis, J Martin, S Goswami, V S Batista and Venkatesan, Nat. Mater.,16, 1216 (2017).[IF:39.737]

057 Pradyut Ghosh, FASc Senior Professor and Associate Dean Molecular Recognition, Chemical Sensing and Molecular Assemblies Associates : (1) P Sarkar (DST-SERB/NPDF), (2) S Santra RA-I (Institute), (3) B Chowdhury, RA-I (DST-SERB), (4) T Ghosh, SRF (CSIR), (5) S Maji, Part-time Research Fellow, (6) S Sinha, SRF (CSIR), (7) S Naskar, SRF (CSIR), (8) S Bej, SRF (CSIR), (9) M Nandi, SRF (Inspire), (10) S Sarkar, JRF (CSIR), (11) R Ghosh, JRF (CSIR), (12) S Mondal, JRF (CSIR) and (13) S Pal (DST-SERB/NPDF)

A polyamide-polyamine hybrid macrobicycle was explored with respect to its ability to bind X -dicarboxylate anions. Potentiometric studies of protonated receptor with the series of dianions from succinate (suc2–) through, glutarate (glu2–), X-ketoglutarate (kglu2–), adipate (adi2–), pimelate (pim2–), suberate (sub2–), to azelate (aze2–) had shown adipate preference in a H2O/DMSO (50:50 v/v) binary solvent mixture. Further, a bis- heteroleptic RuII complex based ditopic receptor, with anion binding triazole –CH unit and appended 4-fluorophenyl urea arm was developed for binding of oxyanions like phosphates and carboxylates selectively (Figure 1). Importantly, this ditopic receptor showed extraction of H2PO4¯, CH3CO2¯ and Selective Luminescence ‘OFF-ON’ sensing and liquid-liquid extraction C6H5CO2¯anions from aqueous solution via liquid-liquid extraction with efficiency of 28%, 74% and 80%, respectively. On of phosphate.[Inorg.Chem. 56, 5371 (2017)]. the other hand, a hybrid tris-bidentate neutral ligand composed of a central 2,2’-bipyridine and two terminal triazolyl-pyridine PUBLICATIONS IN JOURNALS chelating units connected by methylene spacers was employed to 1. Competitive transmetallation of first row transition metal synthesize tri-nuclear triple-stranded side-by-side helicates of first ions between Tri-nuclear Triple-stranded side-by-side helicates- row transition metal(II) ions and were taken into consideration for B Jana, L Cera, B Akhuli, S Naskar, C A Schalley and P Ghosh, competitive formation and transmetallation studies. Further, a bis- Inorg. Chem., 56, 12505 (2017).[IF:4.857] amidotris-amine macrocycle and five bipyridine based bidentate 2. A Polyamide-Polyamine cryptand as dicarboxylate receptor chelating ligands were investigated towards various divalent : Di-anion binding studies in the solid state, in solution, and transition metal ions (NiII, CoII, CuII, ZnII) templated syntheses in the gas phase-S Chakraborty, S Saha, L Lima, U Warzok, of metallo [2]pseudorotaxanes as well as [2]rotaxane. Then the S Sarkar, B Akhuli, M Nandi, S Bej, N NAdarsh, C A Schalley, [2]rotaxane was functionalized via tri-acetylation to incorporate R Delgado and P Ghosh, J. Org. Chem., 82, 10007 (2017). three tertiary amides at the tris-amine centers, which exhibited [IF:4.849] rotamer induced molecular motions in interpenetrated system via formations of multiple conformers /co-conformers. Additionally, 3. Bis-Heteroleptic ruthenium (II) complex of pendant urea existences of multiple rotamers were established via variable functionalized pyridyltriazole and phenathroline for recognition, temperature NMR spectroscopic studies. Li+ and 12-crown-4 sensing and extraction of oxyanions- T K Ghosh, S Chakraborty, were found to be suitable for reversible conformation/co- B Chowdhury and P Ghosh, Inorg. Chem., 56, 5371 (2017). conformation fixation of tri-acetylated bis-amidotris-amine [IF:4.857] macrocyclic wheel based rotaxane. Finally, threading of various 4.Syntheses of metallo-pseudorotaxanes, rotaxane and ‘U’ shaped bidentate axles into a heteroditopicmacrocyclic wheel post-synthetically functionalized rotaxane: a comprehensive via NiII/ CuIItemplation were also carried out. spectroscopic study and dynamic properties - S Santra, S Bej, M Nandi, P Mondal and P Ghosh, Dalton Trans., 46, 13300 (2017).[IF:4.029]

058 5.Threading of various ‘U’ shaped bidentate axles into a LECTURES DELIVERED heteroditopicmacrocyclic wheel viaNiII/ CuIItemplation-M Nandi, Invited talk at (1) FCS 2018, Vidyasagar University; (2) S Santra, B Akhuli and P Ghosh, Dalton Trans., 46, 7421(2017). NCGFM-2018, CSIR-CMERI, Durgapur; (3) St. Xavier’s [IF:4.029] College, Kolkata; (4) RTMC-2018, City College, Kolkata; (5) PUBLICATIONS IN BOOKS/BOOK CHAPTER/ Refresher Course, Jadavpur University; (6) CAS-II, Burdwan MONOGRAPHS University; (7) RAFINC-2017, IIT Kharagpur; (7) First lecture 1) Functional Supramolecular Materials: From Surfaces to MOFs series on supramolecular chemistry, CSMCRI, Bhavnagar; - Pradyut Ghosh, Royal Society of Chemistry, 75-109 (2017). (8) RTCS 2017, NIT Meghalaya, Shillong; (9) Workshop at DeenDayalUpadhyaya College, Delhi University; (10) IISc, Ph.D. DEGREE AWARDED Bengaluru; (11) DST-INSPIRE Program, JBNSTS, Kolkata; (12) (1) Bijit Chowdhury (JU); (2) Saikat Santra (JU) Science Camp, Jadavpur University; SPONSORED PROJECT • Halogen Bonding ….. Recognition and Sensing (DST-SERB) • Development of anionic complex….. steel wastewater (DST- SERB) • Development ….. Wastewater (Tata Steel)

Tapan Kanti Paine Professor and Head Biomimetic and Mechanistic Inorganic Chemistry Associates : (1) R Singh, PI (DST-FastTrack), (2) G Gupta (NPDF), (3) K Chattopadhyay (NPDF), (4) R Rahaman, SRF (Institute), (5) S Bhattacharya, SRF (Inspire), (6) S Banerjee, SRF (CSIR), (7) R D Jana, SRF (CSIR), (8) I Ghosh, SRF (Institute), (9) S Munshi, SRF (CSIR), (10) A Bera, JRF (UGC), (10) S Mandal, JRF (CSIR), (11) A Das, JRF (CSIR) and (12) S Sutradhar, JRF (CSIR)

Aliphatic C-H Bond Halogenation by Iron(II)-X-Keto Acid

Complexes and O2: Functional Mimicking of Nonheme Iron Halogenases: X-Ketoglutarate-dependent nonhemehalogenases catalyze the halogenation of aliphatic C-H bonds in the biosynthesis pathway of many natural products. Involvement of iron(IV)-oxo-halo species has been established as the active oxidant in the halogenation reactions. With an objective to emulate the function of the nonhemehalogenases, two biomimetic iron(II)-X-keto acid complexes, [(phdpa)Fe(BF)Cl] (1) and [(1,4- Two Is Better Than One: Iron (II)-benzoyl formate-chloro complexes tpbd)Fe2(BF)2Cl2] (2) (where phdba = N,N-bis(2-pyridylmethyl) of a tridentate and bis(tridentate) N3 ligands activate dioxygen and aniline, 1,4-tpbd = N,N,N’,N’-tetrakis(2-pyridylmethyl)benzene- perform the aliphatic C-H chlorination. 1,4-diamine, and BF = benzoylformate) were xynthesizet and PUBLICATIONS IN JOURNALS characterized The iron complexes are capable of carrying out 1.New generation fuel cell membrane using swift heavy the oxidative halogenation of aliphatic C-H bonds using O as 2 ions-K K Jana, V K Tiwari, D K Avasthi, T K Paine and P Maiti, the terminal oxidant. Although the complexes are not selective ChemistrySelect,2, 6413 (2017). toward C-H bond halogenation, the complexes represent as functional mimics of nonheme halogenases (Figure). The 2.Purifying arsenic and fluoride-contaminated water by a novel dinuclear complex (2) exhibits enhanced reactivity toward C-H graphene-based nanocomposite membrane of enhanced bond halogenation/hydroxylation. selectivity and sustained flux- M Pal, M K Mondal, T K Paine and P Pal, Environ. Sci. Pollut. Res., https://doi.org/10.1007/ s11356-018-1829-1(2018).[IF: 2.741]

059 SPONSORED PROJECT LECTURES DELIVERED • Unraveling…. Complexes (CSIR) Invited talk at (1) GourBanga University, Malda; (2) Conference • CooperativeEffect …. Catalysis (DST-SERB) on New Dimensions of Chemistry, Uttrakhand; (3) IISER-Bhopal; • Development of bio-inspired …. In wastewater (Swedish (4) IIT Bombay; (5) Burdwan University; (6) Itachuna College, Research Council) Hooghly; (7) Jadavpur University; (8) Bankura Sammilani College; (9) Dibrugarh University, Assam.

Abhishek Dey Associate Professor Mechanism of Multi-proton and Multi-electron Processes Associates : (1) A Rana, SRF (Institute), (2) S Chattopadhyay, SRF (Integrated Ph.D), (3) S Bhunia, SRF (Integrated Ph.D), (4) M Mukherjee, SRF (Integrated Ph.D), (5) D Saha, JRF (UGC), (6) A Sarkar, SRF (Inspire), (7) A Singha, SRF (CSIR), (8) Sk. Amanullah, SRF (CSIR), (9) Md. E Ahmed, SRF (CSIR), (10) S Bhakta, JRF (CSIR/SPM), (11) P Sen, SRF (CSIR), (12) A Ghatak, JRF (UGC), (13) S Mukherjee, JRF (CSIR), (14) A Mondal, JRF (CSIR), (15) A Bhattacharya, JRF (UGC), (16) P Das, JRF (CSIR),(17) D Ganguly, (NPDF/DST-SERB), (18) S Pramanik, (DST-SERB/NPDF), (19) P. Saha, JRF (UGC) and (20) S Naskar, JRF (CSIR)

MECHANISM OF MULTI-PROTON AND MULTI- 7. Spectroscopic and reactivity comparisons of a pair of bTAML ELECTRON PROCESSES : complexes with FeV=O and FeIV=O Units - S Pattanayak, A The impact of axial ligand and 2nd sphere hydrogen bonding J Jasniewski, A Rana, A Draksharapu, K K Singh, A Weitz, M Hendrich, L Que, Jr, A Dey and S Sen Gupta, Inorg. Chem., 56, interactions in O2 and CO2 reduction by iron and cobalt complexes have been discovered. In particular, the factors that 6352 (2017).[IF: 4.857] determine the selectivity and rate have been discovered. These 8. H2 evolution catalyzed by a FeFe-hydrogenase synthetic factors have been now incorporated in catalyst design to result model covalently attached to graphite surfaces- M E Ahmed, S in better turnover numbers and selectivity. Dey, B Mondal and A Dey, Chem. Comm.,53, 8188, (2017). PUBLICATIONS IN JOURNALS [IF: 6.31] 1.Molecular electrocatalysts for the oxygen reduction reaction - S Dey, B Mondal, S Chatterjee, A Rana, S Amanullah and A Ph.D. DEGREE AWARDED Dey, Nat. Rev. Chem.,1, 0098 (2017). (1) Subal Dey (CU); (2) Biswajit Mondal (CU).

2.Factors Affecting the Rate and Selectivity of O2 Reduction SPONSORED PROJECT by Iron Porphyrin Complexes - S Chatterjee and A Dey, Acc. • Bio-Inspired ….. for Noble Task (DST-SERB) Chem. Res.,50, 1744 (2017).[IF: 20.026] • Activation and Reduction ……. Universal Reductase 3.Development of air-stable hydrogen evolution catalysts - B • Modelling the Active …..A New Begining Mondal and A Dey, Chem. Comm.,53, 7707(2017).[IF: 6.31] 4.Functional adlayers on Au electrodes: some recent applications LECTURES DELIVERED: in hydrogen evolution and oxygen reduction - S Chatterjee, Invited talk at (1) Goron Conference, Ventura, California; (2) A Sarkar, S Chatterjee and A Dey,J. Mat. Chem. A, 6, 1323 13th JNCASR Conference, Kerala; (3) 254th ACS Meeting, (2018).[IF: 8.867] Washington DC; (4) University of Paris-Diderot; (5) Plenary 5.Three phases in pH dependent heme abstraction from lecture at the Frensh Solar Fuel Network Meeting. myoglobin - S Mukherjee, M Mukherjee, S Bandyopadhyay and A Dey, J. Inorg. Biochem., 172, 80 (2017).[IF: 3.348] 6.Mechanism of reduction of ferric porphyrins by sulfide : Identification of a low spin FeIII–SH intermediate - K Mittra, A Singha and A Dey, Inorg. Chem.,56, 3916 (2017).[IF: 4.857]

060 Somdatta Ghosh Dey Associate Professor Bioinorganic Chemistry associated with Alzheimer’s disease and Type 2 Diabetes: Spectroscopy and Kinetics Associates : (1) C Ghosh, SRF (Institute), (2) M Seal, SRF (Institute), (3) I Pal, JRF (UGC), (4) A K Nath, JRF (UGC), (5) M Roy, JRF (Integrated Ph.D), (6) A Nayek, JRF (Inspire)

SPECTROSCOPIC AND REACTIVITY STUDIES OF COPPER AND HEME BOUND AMYLIN PEPTIDES ASSOCIATED WITH TYPE 2 DIABETES AND AMYLOID BETA PEPTIDES ASSOCIATED WITH ALZHEIMER’S DISEASE : Type-2 diabetes mellitus (T2Dm) is characterized by reduced Y cell mass and amyloid deposits of human islet amyloid polypeptide (hIAPP) or amylin, a 37 amino acid containing peptide around pancreatic Y cells. The interaction of Cu with amylin and its mutants have been studied in details using absorption, CD, EPR spectroscopy and cyclic voltammetry. Cu binds amylin in 1:1 ratio and the binding domain lies within the first nineteen amino acid residues of the peptide. Depending on the pH of the medium Cu-amylin shows formation of five pH Active-Site Environment of Copper-Bound Human Amylin Relevant to Type 2 Diabetes – M Seal, S GhoshDey, Inorg. dependent components (component IV at pH 4.0, component Chem., 57, 129, (2018). III at pH 5.0, component II at pH 6.0, component I at pH 8.0 and another higher pH component above pH 9.0). The terminal form, even in the presence of excess AY. Data suggest that the amine, His18 and amidates are established as key residues in histidine needed to form the bis-histidine site in the low spin the peptide that coordinate the Cu center. The physiologically heme-AYcomplex is likely involved to be in the high affinity Cu relevant components I and II can generate H2O2, which can binding site in the heme-Cu-AY complex. possibly account for the enhanced toxicity of amylin in the presence of Cu, causing damage of the Y cells of the pancreas PUBLICATIONS IN JOURNALS via oxidative stress. 1.Active-Site environment of copper-bound human amylin Heme binds AY to give a mixture of a mono-histidine bound high relevant to Type 2 Diabetes - M Seal and S Ghosh Dey, spin peroxidase type active site and a bis-histidine bound low Inorg. Chem., 57, 129 (2018).[IF: 4.857] spin cytochrome b type active site present in an equilibrium at 2.Copper induced spin state change of heme-AY associated physiological pH. Of these the high spin mono-histidine bound with Alzheimer’s disease - S Mukherjee, C Ghosh, M Seal and complexes produce significant amounts of partially reduced S Ghosh Dey, Dalton Trans., 46, 13171 (2017). [IF: oxygen species (PROS), catalyze degradation of neurotransmitters 4.029) and oxidize cytochrome c, with potentially detrimental effects. 3.Characterization and identification of dityrosine cross-linked The presence of excess AY could lower these effects by creating peptides using tandem Mass Spectrometry - S Mukherjee, E A a low spin bis-histidine cytochrome b type active site which exerts Kapp, A Lothian, A N Roberts, Y V Vasil’ev, B A Boughton, K lesser oxidative stress by producing much less amount of PROS. J Barnham, M W Kok, C A Hutton, C L Masters, A I Bush, J The presence of Cu(II) reverses this effect and can convert the S Beckman, S GhoshDey and B R Roberts, Anal. Chem., 89, benign low spin heme-AY complex to the detrimental high spin 6136 (2017). [IF: 6.320]

061 SPONSORED PROJECT LECTURES DELIVERED • Characterization ….. Disease (CSIR) Invited talk at (1) CEA, Grenoble, France; (2) University of • Mechanistic Investigation ……. Diseases & Type 2 Diabetes paris, Diberot, France

Raju Mondal, Associate Professor Crystal Engineering, Metallogelation, Magnetic materials Associates : (1) S Bhattacharya, (2) M Roy, SRF (Institute), (3) S Akhtar, SRF (CSIR), (4) K S Das, SRF (Inspire), (5) A De,JRF (Inspire), (6) S Bhawal, JRF (UGC), (7) S Saha, JRF (UGC) and (8) A Adhikari, (NPDF-SERB)

SPONSORED PROJECT coordinated H2MDP and carboxylate groups play some Our research goals are centred around the synthesis and pivotal role in the metal-organic coordination framework charecterization of Metal-Organic Frameworks (MOF) and formation. This prompts us to evaluate the potential of this coordination polymers, coupled with identification of structure- molecule as a co-crystallization agent to produce interesting property relationships in these systems. As a part of our ongoing supramolecular architecture. Accordingly, we have synthesized research several novel 1D, 2D and 3D coordination polymers various interesting supramolecular architectures, including a have been synthesized using a divergent sterically hindered polyrotaxane type network, constructed with heterosynthons in polydentate ligand, methylenebis(3,5-dimethylpyrazole) cocrystals of H2MDP and acids. We have been able to identify (H2MDP). three major supramolecularsynthons that would be helpful in One of the most successful approaches for generating metal- the prediction of structural motifs for these kinds of studies. organic frameworks (MOFs) would be reticular synthesis using a secondary building unit (SBU). The strategy is to identify a PUBLICATIONS IN JOURNALS robust and reproducible building block (SBU) as a vertex and 1.A Complimentary XRD and theoretical study of water induced subsequently design a network by linking them with organic solid state ionic separation of Br- and pyrazolium : A case for ligands of well-defined geometry. This, in effect, can pave the paradoxical cation-water cluster - K S Das, A Goswami, P N way for the strategic control of vertex geometry in the resulting Samanta, K K Das and R Mondal, Chemistry Select,2, 5288 MOFs, which should enable us to predict the topology of the (2017).[IF: ] resulting structure. We have identified a robust and reproducible 2.Ln8 (Ln= Gd, Ho, Er, Yb) Butterfly core exhibiting metal-carboxylate non-cluster type SBU, designed with the magnetocaloric effect and field-induced SMM behavior for Er proper utilization of the complimentary hydrogen bonding of the analogue - S Bala, A Adhikary, S Bhattacharya, M Sen Bishwas, H2MDP molecule and carboxylate group. Subsequently, we have P Poddar and R Mondal, ChemistrySelect,2, 11341 (2017). successfully synthesized a series of coordination polymers based [IF: ] on this tailor-made SBU using benzene polycarboxylic acids as 3.A novel gel-based technique for controlled synthesis of silver auxiliary ligands. It has been observed that the conformational nanoparticles showing efficient catalysis, mercury(II) freedom of the linker molecules plays a crucial role in determining sensing and sequestration-cum-reduction of hexavalent both the dimensionality and topology of the final structure. Chromium - S Bala and R Mondal, Chemistry Select,2, 389 The pyrazole molecules possess two different nitrogen atoms, (2017).[IF: ] which may be involved in both metal coordination and/or hydrogen-bonding interactions. The H2MDP molecule has two Ph.D. DEGREE AWARDED H-bond acceptor sites as well as two protonated nitrogen atoms, (1) Sudeshna Bhattacharya (CU). which can be used for hydrogen bond donating purpose. It has been observed earlier that the hydrogen bonds formed between SPONSORED PROJECT Studies on Metallogelation….. Ligands (DST-SERB

062 Harapriya Rath Associate Professor NIR Absorptive and Emissive Heteroannulenes, Through conjugated vs Cross-Conjugated Heteroannulenes, Anti-cancer Drugs, Molecular Magnetism Associates : (1) N Halder, SRF (Institute), (2) S Sahoo, JRF (CSIR), (3) B Chakraborty, JRF (Institute)

Acid catalyzed condensation reaction and oxidative coupling Ph.D. DEGREE AWARDED reactions have been exploited effectively in synthesizing (1) Abhijit Mallick (JU). heterocyclic macrocycles. NMR spectra of these molecules clearly indicated the aromatic nature for these macrocycles. SPONSORED PROJECT Due to characteristic diatropic ring current effect, the protons Multifaceted Symmetrical …. Aza-Crown Macrocycles inside the macrocycle have been found to resonate in the upfield region and the protons on the periphery resonated in LECTURES DELIVERED the downfield region. An octaphyrin(1.2.1.1.1.2.1.1) containing Invited talk at (1) MTIC-XVII, Pune. two conjugated ethynylene bridges has been synthesized and characterized. The macrocycle reveals complex conformational dynamics dependent on its protonation and oxidation state. The [40] annulenoidmacrocycle and its [38]annulenoid oxidized form display residual macrocyclic ring currents. In spite of its low apparent aromaticity the new octaphyrin is a potent chromophore with a vis-NIR absorption profile strongly influenced by the redox ! heteroannulene has been synthesized and characterized to exhibit anticancer. activity by targeting cellular Top1 and preventing the enzyme from directly participating in the apoptotic process.

PUBLICATIONS IN JOURNALS 1.Neutral porphyrin derivative exerts anticancer activity by targeting cellular topoisomerase I (Top1) and promotes apoptotic cell death without stabilizing Top1-DNA cleavage complexes - S Das, A Ghosh, S Paul Chowdhuri, N Halder, I Rehman, S Sengupta, K Sahoo, H Rath and B B Das, J. Med. Chem., 61, 804 (2018).[IF:6.259] 2.Ethynylene-linked Figure-eight Octaphyrin (1.2.1.1.1.2.1.1) : Synthesis and characterization of its two oxidation states - K C Sahoo, M A Majewski, M Stepien and H Rath, J. Org. Chem.,82, 8317 (2017).[IF:4.849]

063 Amit Majumdar Associate Professor Bio-inspired Inorganic Chemistry Associates : (1) S Khatua, SRF (CSIR), (2) N Pal, SRF (CSIR), (3) M Jana, SRF (CSIR), (4) T Naskar, SRF (CSIR), (5) T Ganguly, JRF (CSIR), (6) A Das, JRF (UGC)

SPONSORED PROJECT PUBLICATIONS IN JOURNALS We have been engaged in various areas of bio-inspired inorganic 1.C–S Bond cleavage, redox reactions and dioxygen activation chemistry involving cobalt(II), iron(II), Mo(IV), W(IV), thiols and by nonhemedicobalt(II) complexes - M Jana and A nitric oxide. Some of the specific topics in which we have been Majumdar, Inorg. Chem., 57, 617 (2018). [IF: 4.857] able to build up exciting results in last one year are provided below. 2.Functional mononitrosyldiiron(II) complex mediates the • Synthesis, redox properties and reactivity for a series of reduction of NO to N2O with relevance for flavodiiron mononuclear Mo(IV) and W(IV) complexes with P, P; S, S; O, S NO reductases - M Jana, N Pal, C J White, C Kupper, F Meyer, and O, O Donor ligands. N Lehnert and A Majumdar, J. Am. Chem. Soc,.139, 14380 • Conversion of nitric oxide to nitrous oxide by nonheme mono- (2017).[IF:13.858] and di-nitrosyldiiron(II) complexes at RT. Characterization of the end products and mechanistic study. 3.Mononuclear Bis(dithiolene) Mo(IV) and W(IV) complexes • C–S bond cleavage, redox reactions and dioxygen activation with P, P; S, S; O, S and O, O donor ligands : A comparative by nonhemedicobalt(II) complexes. reactivity study - S Khatua, T Naskar, C Nandi and A Majumdar, New. J. Chem., 41, 9769 (2017).[IF:3.277]

LECTURES DELIVERED Invited talk at (1) MTIC-XVII, Pune

SPONSORED PROJECT • Activation of small molecules…. DiironComplexes (CSIR) • Structural and Functional models …… Dehydrogenases (DST-SERB)

Representative scheme for the synthesis of mono- and di-nitrosyldiiron(II) complexes and subsequent NO reduction activity.

064

Department of Materials Science

Department Profile People Faculty : 10 Post-doctoral Research Associate : 13 Ph.D. Students : 57 Non-Academic Staff : 03

Extra Mural Funding Projects (ongoing) : 10

Amitava Patra Research Achievements Head of the Department Ph.D. degree awarded : 10 Academic Activities Seminars organized : 01 Conference/Symposia/ School organized : 02 Talks delivered by members of department in conferences/symposia (National) : 41 Talks delivered by members of department in conferences/symposia (International) : 16

066 Gour Prasad Das Senior Professor Our group is involved with first principles investigation of electronic, magnetic, catalytic and transport properties of Carbon based 2D nanostructures. Two main areas of interest are (a) Catalytic activity and Oxygen Reduction Reaction (ORR) of functionalized 2D nanostructures analogous to Graphene; and (b) electronic and transport properties of 1D graphenenanoribbons, both AGNR and ZGNR and the effect of doping with B and N. Associates : (1) S Chakrabarty, SRF, (2) P Banerjee, SRF, (3) T Das, SRF (Inspire) and (4) M Mukherjee (Women Scientist WoS-A) Collaborators : (1) AHM Abdul Wasey (KaziNazrul University),(2) R Thapa (SRM Univ), (3) K K Chattopadhyay (Jadavpur Univ) and BN Dev (IACS)

FIRST-PRINCIPLES DESIGN OF FUNCTIONAL metal transition. When the doped edge is left unpassivated the DERIVATIVES OF GRAPHENE : system becomes half metallic, and the magnetic moment at that

In the post-graphene era, there has been a significant upsurge edge is attributed to the unsaturated B-2px orbital. Passivation of of interest on designing various graphene derivatives and tune the B edge with H or H2 causes saturation of B-2px orbital which their physical and chemical properties. The successful synthesis results in vanishingly small moment at that edge and the system of phase separated in plane graphene/h-BN hetero structures become metallic with high degree of spin polarization at EF. The encouraged us to design one dimensional graphene/h-BN current-voltage characteristics for the half-metallic systems show hetero-nanoribbons (G/BNNR). Using first-principles density 100% spin-filtering efficiency for a wide range of bias voltages functional based approach, the electronic and magnetic [1]. Zero bias transmission function of the other configurations properties of the hybrid ribbons with mono-hydrogenated shows asymmetric behavior for the up and down spin channels edges have been investigated for different configurations with (Fig. 2), thereby indicating their strong application potential in alternative composition of C-C and B-N units in a ribbon of nano-spintronics.This work has been done in collaboration with fixed width. The result suggests that the electronic as well as Dr. Ranjit Thapa of SRM University. magnetic properties of the ribbons can be regulated by the Fig. 1 number of C-C (or B-N) units present in the structure. Both these hetero-nanoribbons, either with N or B terminated edges, undergo a semiconductor-to-semimetal-to-metal transition with the increase in C-C units for a fixed ribbon width [1]. The spin density distribution shows that significant localization of the magnetic moments is observed at the edge carbon atoms and arises when the number of C-C units is greater than 2 for most of the structures. Tisita Das, Soubhik Chakrabarty, Yoshiyuki Kawazoe and G.P. Das, (2018), in press.

ELECTRONIC AND MAGNETIC PROPERTIES OF EDGE DECORATED ZGNR : The electronic, magnetic and transport properties of zigzag Graphenenanoribbons (ZGNR) have been studied from first- principles with substitutional B doping at edge C sites (Fig. 1). Soubhik Chakrabarty, A.H.M. Abdul Wasey, Ranjit Thapa On 100% edge B-doping, the system undergoes semiconductor- and G. P. Das, communicated

067 Fig. 2 PUBLICATIONS IN JOURNALS 1. Graphene wrapped copper phthalocyaninenanotube : Enhanced photocatalytic activity for industrial waste water treatment - M Mukherjee, U K Ghorai, M Samanta, A Santra, G P Das and K K Chattopadhyay; Appl. Surf. Sci. 418, 756 (2017).[IF:3.387] 2. One pot solvothermal synthesis of ZnPc nanotube and its compositewith RGO: A high performance ORR catalyst in alkaline medium - M Mukherjee, M Samanta, U K Ghorai, S Murmu, G P Das and K K Chattopadhyay; Appl. Surf. Sci., (2018), in press.[IF:3.387] 3. The origin of diverse lattice dynamics in the graphene family – G P Das and A Bhattacharya; Bull. Am. Phys. Soc., X36, (2018); J. Phys: Condens. Matter (2018), in press. [IF:2.649] 4. Tuning the electronic & magnetic properties of graphene/ Paramita Banerjee, Ranjit Thapa, A. Rajkamal, K.R.S. Chandrakumar and G.P. Das, (2018). in press. h-BN hetero nanoribbon : A first-principles investigation -T Das,S Chakrabarty, Y Kawazoe and G P Das, AIP Advances (2018), in press[IF:1.568] METAL-FUNCTIONALIZED CARBON NANOHORNS FOR 5. Solution processed, organic/inorganic nanostructure HYDROGEN STORAGE : based bilayer device for Diode application - M Mukherjee, M Single walled carbon nanohorns (SWCNH) with conical apex Samanta, B Das, U K Ghorai, G P Das, K K Chattopadhyay; have been synthesized with different types of ‘cappings’ We have Devices for Integrated Circuit (DevIC) p. 281 (2017) studied hydrogen storage properties of metal (M) functionalized 6. Origin of spin-polarization in edge boron doped zigzag SWCNHs, using DFT approach. Our study shows how curvature graphenenanoribbon : a potential spin filter - S Chakrabarty, can be used as a tuning parameter to activate hydrogen storage A H M. Abdul Wasey, G P Das and R Thapa, Nanotechnology capability of these nanostructures. Our results show [1] that a (2018), in press.[IF.3.44] curvature varying between 11 - 24 increases the reactivity of SWCNHs for adsorption of light metals (Li, Na, Ca) ad-atoms, as Ph.D. DEGREE AWARDED : compared to that of planar graphene quantum dots. Furthermore, (1) Soubhik Chakrabarty (CU); (2) Paramita Banerjee (CU) 7`!{| the topmost hexagon, in order to understand the dependence LECTURES DELIVERED : of reactivity on the intra-curvature values of the SWCNHs. After Invited talk at (1) EMN Las Vegas Conference and University full hydrogenation, Li-doped SWCNH with intra-curvature values of Nevada, (2) APS March Meeting, Los Angeles, (3) MRSI- higher than 11 is found to yield 7.5 wt. % of hydrogen; also AGM, Bharatidasan Univ, Tirichurapalli, (4) ACCMS-VO12, the estimated temperature at which complete dehydrogenation Sendai, (5) Bose Institute Centenary Celebration, RTCMP, takes place has been found to be nearly 450K (~180C), thereby (6) NAMASTA-2017, Dibrugarh University, (7) ICMSR qualifying the M-functionalized nanohorns as potential candidate Conference, Dubai, (8) ACCS-9 General Conference, Kuala for hydrogen storage [1]. This work has been done in collaboration Lumpur, (9) SMEC-2017 Conference, Miami. with Dr. RanjitThapa of SRM University. SPONSORED PROJECT • IBIQuS (BARC)

068 Bhupendra N Dev, FASc, FNASc Senior Professor Self-organized epitaxial nanostructures; Magnetism and other phenomena in thin films; Surfaces and interfaces; Ion irradiation effects in thin films and multilayers Associates : (1) K Das, RA-I, (2) C Maji (DST Woman Scientist), (3) N Banu, SRF (CSIR) Collaborators : (1) A Roy (University of Texas at Austin, USA), (2) Prof. G P Das (Materials Science, IACS),(3) S Singh (BARC), (4) S. Basu (BARC), (5) V Lauter (Oak Ridge National Laboratory, USA), (6) B Satpati (SINP), (7) UV Waghmare (JNCASR), (8) G Sheet (IISER-Mohali)

Research mainly involved growth of nanostructures and thin films on surfaces of single crystalline silicon and their investigations regarding structure, magnetism and superconductivity. In addition, we have been investigating ion irradiation induced phenomena and associated structural and magnetic modifications in thin films.

PUBLICATIONS IN JOURNALS 1. Ion irradiation effects on a magnetic Si/Ni/Si trilayer and lateral magnetic-nonmagnetic multistrip patterning by focused ion beam - B N Dev, N Banu, J Fassbender, J Grenzer, N Cross-sectional transmission electron microscopic (TEM) image (a) Schell, L Bischoff, R Groetzschel and J McCord; Indian J. Phys. of a CoSi2 nanowire grown on a Si(110) substrate by molecular 91,1167(2017).[IF:1.166] beam epitaxy (MBE). The nanowire length is along the direction 2. Fluence dependent oscillatory amorphization and recrystallization perpendicular to the plane of the image.The image shows that the nanowire partially grows into the Si substrate. High resolution in ion irradiation -Nasrin Banu, B. Satpati, A. Bhukta and B. N. TEM images (b,c) across the CoSi2/Si interfaces show the details of Dev; Nucl. Instr. Meth. Phys. Res.B, 406 689(2017).[IF:1.389] atomic arrangements and perfect epitaxy. 3. Unidirectional endotaxial cobalt disilicide nanowires on Si(110) substrates - J C Mahato, D Das, N Banu, B Satpati and B NDev; Nanotechnology28 425603(2017).[IF: ] SPONSORED PROJECT 4. High density nonmagnetic cobalt in thin films - N Banu, S • IBIQuS (BARC) Singh, S Basu, A Roy, H C P Movva, V Lauter, B Satpati and B N Dev; Nanotechnology 29 195703(2018).[IF: ] LECTURES DELIVERED :

5. Probing of O2 vacancy defects and correlated magnetic, Invited talk at (1) Int. conference on electronics, materials electrical and photoresponse properties in indium-tin oxide engineering and nano technology, Kolkata, (2) Conference nanostructures by spectroscopic techniques Shyamsundar Ghosh on Quantum Optics and Quantum Technology, Kolkata, (3) and B. N. Dev; Appl. Surf. Sci.439 891(2018).[IF: ] ICMAT-2017, Singapore, (4) Institute of Plasma Research, Gandhinagar, (5) National Institute of Design, Gandhinagar, 6. Magnetocaloric effect of polycrystalline Sm0.5Ca0.5MnO3 compound: investigation of low temperature magnetic state - K (6) IACS, Kolkata, (7) Theme meeting on neutron scattering, Das, N Banu, I Das and B N Dev; Solid State Commun., 274 Mumbai, (8) IIT, Kharagpur, (9) BITs Annual Conference, 36(2018).[IF:] Changsha, China, (10) Fudan University, Shanghai, China, (11) Int. conference on Thin Films, Delhi Ph.D. DEGREE AWARDED : (1) Nasrin Banu (CU)

069 Tanusree Kar Senior Professor X-ray Crystallography, Structure analysis by single crystal X-ray diffraction and Rietveld method, Functional materials for photocatalytic activity Associates : (1) S Sain, RA-II Collaborators: (1) S K Pradhan (); (2) S Kr Seth (Jadavpur University)

PANI/V2O5•nH2O HETEROJUNCTION PHOTOCATALYST : Polyaniline intercalated vanadium oxide xerogel (PV) hybrid nanocomposite (NC) with novel structure has been successfully synthesized through a simple hydrothermal route. Detailed structure and microstructure characterization of PV NC is done through Rietveld refinement of XRD data and FESEM/HRTEM images. Both FTIR and XPS spectra confirm the presence of PANI + and water molecules within the NC and partial reduction of V5 + to V4 , corroborating with the results of XRD pattern analysis. Successive morphological changes of PV NC with different reaction time have been revealed from FESEM images. UV– vis spectra also confirm the formation of PV NC. Intercalation of water and PANI layers into V2O5•nH2O layer leads to a structural phase transition from orthorhombic to monoclinic Low and (b-c) high magnified HRTEM images, (d) STEM-HAADF phase due to substantial increase in interplanar spacing of (00l) image, and (e) EDX spectrum of PV sample recorded from region 1 of orthorhombic V O . The photocatalytic property of the as 2 5 of (d). (f) STEM-HAADF-EDX images from region 2 of (d) showing synthesized PV NC has been reported for the first time, with a V-K map (green), O-K map (orange) and C-K map (red). promising photocatalytic activity for the degradation of organic dye, Rhodamine B (RhB) under visible light irradiation. It is attributed to a synergic effect in between PANI and V2O5•nH2O xerogel. The photocatalyst also shows remarkable real visible -4 SG:P 21m) and minor carbon nitride (C3N4, SG: 6-m2) phases light photocatalytic activity with non-absorbing colorless test were confirmed. Process-temperature-induced crystallographic molecules like phenol and antibiotic kanamycin. changes in PCN that occurred within a temperature interval between 450 and 650o C were also investigated critically. POLYMERIC GRAPHITIC CARBON NITRIDE : HRTEM analysis of the samples also corroborated the results In recent years polymeric graphitic carbon nitride (g-C3N4) obtained from XRD data analysis. The as-prepared PCN with materials have attracted much attention because of their similarity strong visible light absorption have a band gap around 2.9 to graphene. In contrast to graphene g-C3N4 is a medium eV. The photoluminesce (PL) spectra showed that PCN had bandgap semiconductor and in that role an effective photocatalyst continuous tunable PL properties in the visible region with and chemical catalyst for various reactions. In order to develop increasing temperature. For structural representations of efficient visible light driven, organic, metal-free, semiconductor molecular PCN with characteristic binding energies for specific photocatalysts for environmental applications, novel polymeric sites and groups within the compounds XPS study was carried carbon nitrides (PCN) were synthesized in our laboratory. It is found out successfully. From FTIR study, characteristic modes of that PCN typically possesses almost amorphous to nanocrystalline }!| nature with variable compositions posing significant challenges heterocycles were also confirmed. The as-prepared PCN to assess and measure micro(structure) parameters. Hence, it exhibited very good visible light photocatalytic activity due to became incumbent to analyze the XRD patterns using Rietveld its layered structure and large surface area which makes it a whole profile refinement method. For the first time from Rietveld suitable candidate in pollutants degradation and solar energy analysis, simultaneous presence of major melamine (C H N , 3 6 6 conversion in large scale application. 070 Photocatalytic degradation of Rhodamine B (RhB) dye with PCN under visible light irradiation

PUBLICATIONS IN JOURNALS 3. Alteration of magnetic behavior and microstructural distortion 1. Microstructure characterization of hydrothermally of EuMnO3 by partial substitution of Eu with monovalent Na - A synthesized PANI/V O •nH O heterojunction photocatalyst for 2 5 2 Nandy, T Kar, S R Bhattacharyya, D Das, S Kr Pradhan;Journal visible light induced photodegradation of organic pollutants of Alloys andCompounds, 715 , 214 (2017).IF:2.919] and non-absorbing colorless molecules - S Kundu, B Satpati, T Kar, S Kr Pradhan, Journal of Hazardous Materials, 339, 4. Hydrothermal synthesis of polyaniline intercalated vanadium 161 (2017).[IF:6.393] oxide xerogel hybrid nanocomposites: Effective control of morphology and structural characterization -S Kundu, B Satpati, 2. Investigations of microstructure and Dc conductivity of M Mukherjee, TKar and S Kr Pradhan; New J.Chem.,41, 3634 V O -Nd O glass nanocomposites -A S Das, M Roy, D Roy, 2 5 2 3 (2017) [IF:3.269] S Rath, T Karand S Bhattacharya; ChemistrySelect, 2, 11273 (2017). (New journal of Wiley-VCH)

071 Subodh Kumar De Senior Professor Low Temperature Physics, Semiconducting Nanostructures, Magnetic Materials Associates : (1) S Ghosh, RA-I, (2) B Dalal, RA-I, (3) S Paul, SRF (Inspire), (4) S K Pradhan, SRF (Inspire), (5) A Sarkar, SRF (Inspire), (6) S S Maity, JRF (SERB-Project), (7) D Das (SERB-NPDF)

SEMICONDUCTOR NANOCRYSTALS : PUBLICATIONS IN JOURNALS : Plasmonic ZnS@Sn:ZnO Nanoheterostructures have been !}!‚|‚ 1. Efficient charge separation in plasmonic ZnS@ | Sn:ZnOnanoheterostructure : Nanoscalekirkendall effect and separation in type II heterostructure increases the photocatalytic enhanced photophysical properties - S Paul, S Ghosh, and S K De; Langmuir, 34, 4324(2018).[IF:3.833] activity and photo current gain. The epitaxial growth of TiO2 and Au nanocrystals on the surface of Bi S nanorods leads 2 3 2. Defect and optical properties of Sbdoped and hydrogenated to the formation of Bi2S3/TiO2/Au ternary heterostructures. Epitaxial interface and favorable band alignments improves the BaSnO3 - A Sarkar and S K De; Semiconductor Science and separation of electron-hole pair and consequently enhances the Technology, 33, 035018 (2018).[IF:2.305] photocatalytic degradation of organic dyes and removal of Cr(VI) from water. Positive and neutral charge states of hydrogen in Sb 3. Magnetization reversal, exchange interaction, and switching behavior studies on Ru doped GdCrO3 - B Dalal, B Sarkar, V doped BaSnO3 samples lead to three local vibrational modes. Two prominent EPR signals at room temperature also establish Dev Ashok, S K De; Journal of Alloys and Compounds, 739, that two kinds of oxygen vacancy centres are created during 418 (2018).[IF:3.133] the synthesis of samples. The optical band gap increases with annealing at hydrogen atmosphere due to the Burstein-Moss 4. Effect of Gd and Cr substitution on the structural, electronic band filling effect. and magnetic phases of SrRuO3: a case study of doping and MAGNETIC MATERIAL : chemical phase separation - B Dalal, B Sarkar and S. K. De, J.

Solid solution (SrRuO3)‚(GdCrO3‚$„ 0 ‚ 0 ' Phys.: Condens. Matter, 29, 495803 (2017).[IF:2.649] temperature induced metal-insulator transition for x = 0.05 and 0.10 due to electron-electron interaction in weak disordered 5. Maximization of photocatalytic activity of Bi2S3/TiO2/ systems. Precise analysis of temperature dependent resistivity for x Au ternary heterostructures by proper epitaxy formation and 0.2 samples of insulating ground state dictate that the transport plasmonic sensitization - S Paul, S Ghosh, D Barman,S K phenomenon is mainly associated with Arrhenius-type charge De; Applied Catalysis B: Environmental, 219, 287 (2017). conduction, Mott’s variable range hopping, short-range and [IF:9.446] long-range Coulomb interaction mediated hopping processes due to the high degree of randomness.The composition evolution Ph.D. DEGREE AWARDED : results in complex magnetic phases such as ferromagnetic (1) Biswajit Dalal (JU)

SrRuO3, Griffiths phase, antiferromagnetic GdCrO4 phase and at end canted antiferromagnetic GdCrO3 phase. SPONSORED PROJECT

180 200  • Magnetic …. Semi Conductor (UGC-DAE) CW 170 SRO+GCO4 150 SRO SRO+GCO4 + GCO3 SRO + GCO3 GCO3 • Experimental investigation ………. In correlated systems 160 T C

PM 100 

T CW ) 150 N (SERB-DST) K (K)

( Metal Insulator

T 140 50 FM AFM 130 0 LECTURES DELIVERED: 120 -50 Invited talk at (1) IICSPPCB-2018, (2) Vidyasagar University, (3) NanoscaleKirkendall effect driven formation 0.0 0.2 0.4 0.6 0.8 1.0 x of hollow ZnS@Sn:ZnOheterostructure. Birla Institute of Technology & Science, Pilani, (4) ICN3I-2017, Figure.Phase diagram of IIT Roorkee and (5) Pondicherry University. (SrRuO3)1x(GdCrO3)xseries (where 0 Langmuir 34 (2018) 4324 ƙx ƙ 1).

J. Phys.: Cond. Matter. 29(2017) 495803 072 Asim Bhaumik Senior Professor Functionalized porous nanomaterials for gas storage, metal ion sensing, water purification, eco-friendly catalysis

for the synthesis of organic fine chemicals, CO2 fixation, photosplitting of water and drug-delivery applications Associates : (1) V Kumari, SRF (CSIR), (2) S Mondal, SRF (CSIR), (3) P Bhanja, SRF (CSIR), (4) S Chatterjee JRF (Inspire), (5) S K Das, JRF (UGC), (6) U Kayal, NPDF (DST-SERB), (7) D Charaborty, JRF (Inspire), (8) A Chowdhury, JRF (CSIR), (9) S Das, JRF (CSIR) and (10) S Ruidas, JRF (CSIR) Collaborators : (1) S M Islam; (2) C Mukhopadhyay

POROUS NANOMATERIALS FOR ENERGY, 3. One-Pot synthesis of polyhydroquinoline derivatives through ENVIRONMENT AND BIOMEDICAL APPLICATIONS: organic-solid-acid- catalyzed Hantzsch Condensation reaction A wide range of organic, organic-inorganic hybrid and purely - S Mondal, B C Patra and A Bhaumik,ChemCatChem,9, 1469 inorganic porous nanomaterials including porous organic (2016).[IF:4.80] polymers (POPs) and covalent organic frameworks (COFs) 4. Bifunctionalizedmesoporous SBA-15 : A new heterogeneous have been synthesized through hydrothermal/solvothermal or catalyst for the facile synthesis of 5-hydroxymethylfurfural - P condensation/polymerization of molecular building blocks in Bhanja, A Modak, S Chatterjee, A Bhaumik, ACS Sustainable the presence or absence of the templates. These materials are Chemistry & Engineering,5, 2763 (2017).[IF:5.95] thoroughly characterized by using powder XRD, N2 sorption, 5.A new strongly paramagnetic cerium-containing microporous SEM/TEM-EDX, FTIR, UV-Vis., photoluminescence spectroscopy, MOF for CO fixation under ambient conditions – SK Das, S ion-chromatography, TG-DTA, solid state MAS NMR, etc. Eco- 2 Chatterjee, S Bhunia, A Mondal, P Mitra, V Kumari, A Pradhan friendly liquid and gas phase organic transformations are and A Bhaumik, Dalton Transactions,46, 13783 (2017). carried out using these porous nanomaterials as heterogeneous [IF:4.01] catalyst under mild conditions. CO2 storage potential of these functionalized porous materials as adsorbent as well as 6. nanoparticles embedded over mesoporous TiO2 heterogeneous catalysts for the CO2 fixation reactions for the for chemical fixation of CO2 under atmospheric pressure and synthesis of value added fine chemicals are explored. Some solvent-free conditions - R Khatun, P Bhanja, P Mondal, A of these porous nanomaterials showed outstanding catalytic Bhaumik, D Das and S M Islam; New Journal of Chemistry, 41, activity in the photosplitting of water to produce H2 (energy) 12937 (2017).[IF:3.29] and the process is highly sustainable. Some of these materials 7. Mesoporous silica nanoparticle based enzyme responsive are also employed as drug-delivery vehicle for targeted delivery system for colon specific drug delivery through guar gum of anti-cancer drugs. capping - B Kumar, S Kulanthaivel, A Mondal, S Mishra, PUBLICATIONS IN JOURNALS B Banerjee, A Bhaumik, I Banerjee and S Giri, Colloids and 1. A Metal-Free covalent organic polymer for electrocatalytic Surfaces B: Biointerfaces,150, 352 (2017).[IF:3.89] hydrogen evolution - B C Patra, S Khilari, RN Manna, S Mondal, 8. Pd Nanoparticles decorated on hypercrosslinkedmicroporous D Pradhan, A Pradhan and A Bhaumik, ACS Catalysis, 7, 6120 polymer : A highly efficient catalyst for the formylation of amines (2017).[IF:10.61] through carbon dioxide fixation - R A Molla, P Bhanja, K Ghosh, 2.Covalent organic framework material bearing phloroglucinol S S Islam, A Bhaumik and S M Islam,ChemCatChem,9, 1939 building units as a potent anticancer agent - P Bhanja, S Mishra, (2017).[IF:4.80] K Manna, A Mallick, K D Saha and A Bhaumik, ACS Applied Materials & Interfaces,9, 31411 (2017).[IF:7.50]

073 9. An expeditious synthesis of spiro [chromeno [2, 3c] pyrazole- 20. Porous polymer bearing polyphenolic organic building 4,3-indolin]2 5-diones catalysed by recyclable spinel units as a chemotherapeutic agent for cancer treatment -K ZnFe2O4nanopowder - K De, P Bhanja, A Bhaumik and C Dhanalaxmi, P Bhanja, S Mishra, K Manna, K D Saha and A Mukhopadhyay, Chemistry Select, 2, 4857 (2017).[IF:3.0] Bhaumik, ACS Omega, 3, 529 (2018).[IF:] 10. Electrochemical stimuli-driven facile metal-free hydrogen 21. A new microporousoxyfluorinated titanium (IV) phosphate evolution from pyrene-porphyrin-based crystalline covalent as an efficient heterogeneous catalyst for the selective oxidation organic framework - S Bhunia, S K Das, R Jana, S C Peter, S of cyclohexanone - P Bhanja, S Chatterjee, A K Patra and A Bhattacharya, M Addicoat, A Bhaumik and A Pradhan, ACS Bhaumik, Journal of Colloid and Interface Science,511, 92 Applied Materials & Interfaces, 9, 23843 (2017).[IF:7.50] (2018).[IF:4.23] 11. Mesoporous -Alumina with isolated silica sites for direct 22. Zeolite-Y mediated multicomponent reaction of isatins, liquid hydrocarbon production during Fischer–Tropsch reactions cyclic 1,3-diketones, and 1, 2-phenylenediamine : Easy access in microchannel reactor - A Rai, M G Sibi, S A Farooqui, M to spirodibenzo [1,4] diazepines -K De, P Bhanja, A Bhaumik, Anand, A Bhaumik and A K Sinha, ACS Sustainable Chemistry C Mukhopadhyay, ChemCatChem,10, 590 (2018).[IF:4.80] & Engineering, 5, 7576 (2017).[IF:5.95] 23.Use of an efficient polystyrene-supported cerium catalyst 12. Catecholase activity of a manganese Schiff base complex for one-pot multicomponent synthesis of spiro-piperidine functionalized over SBA-15 in aqueous heterogeneous medium derivatives and click reactions in green solvent - P Mondal, S - L Paul, B Banerjee, A Bhaumik and M Ali,Microporous & Ghosh, A Bhaumik, D Das, S M Islam, Applied Organometallic Mesoporous Materials, 249, 78 (2017).[IF:3.61] Chemistry, 4227. https://doi.org/10.1002/aoc.4227 (2018). 13. Silver nanoparticles supported over Al2O3@Fe2O3 core- [IF:2.25] shell nanoparticles as an efficient catalyst for one-pot synthesis 24. Magnesium oxide as an efficient catalyst for CO2 fixation of 1,2,3-triazoles and acylation of benzyl alcohol - P Basu, P and N-formylation reactions under ambient conditions - A H Bhanja, N Salam, T K Dey, A Bhaumik, D Das and S M Islam, Chowdhury, P Bhanja, N Salam, A Bhaumik and S M Islam, Molecular Catalysis 439, 31 (2017).[IF:4.22] Molecular Catalysis,450, 46 (2018).[IF:4.22]

14. Nitrogen rich carbon coated TiO2 nanoparticles as anode ˆ ‰ ! ' Š 7`‹| for high performance lithium ion battery - C Senthil, T Kesavan, covalent organic framework as a high performance A Bhaumik, M Yoshio and M Sasidharan, Electrochimica Acta, supercapacitor - S K Das, K Bhunia, A Mallick, A Pradhan, D 255, 417 (2017).[IF:4.80] Pradhan and A Bhaumik,Microporous & Mesoporous Materials, 266, 109 (2018).[IF:3.61] 15. Palladium nanoparticles embedded on mesoporous TiO2 material (Pd@ MTiO2) as an efficient heterogeneous catalyst for Suzuki-Coupling reactions in water medium - P Mondal, P Ph.D. DEGREE AWARDED : Bhanja, R Khatun, A Bhaumik, D Das and S M Islam,Journal of (1) V Kumari (JU). Colloid and Interface Science,508, 378 (2017).[IF:4.23]

16. A new porous polymer for highly efficient capacitive energy SPONSORED PROJECT storage P Bhanja, S K Das, K Bhunia, D Pradhan, T Hayashi, • Organic-inorganic hybrid ….. delivery systems (DST) Y Hijikata, S Irle and A Bhaumik, ACS Sustainable Chemistry & Engineering,6, 202 (2018).[IF:5.95] LECTURES DELIVERED: 17. Ruthenium nanoparticle-decorated porous organic Invited talk at (1) ASC-4, Izmir, Turkey, (2) Workshop on Indo- network for direct hydrodeoxygenation of long-chain fatty acids Egypt project, Cairo, Egypt, (3) IFWGSC-18, IIT-ISM, Dhanbad. to alkanes - S Mondal, R Singuru, S Chandra Shit, T Hayashi, S Irle, Y Hijikata, J Mondal and A Bhaumik, ACS Sustainable Chemistry & Engineering,6, 1610 (2018).[IF:5.95] 18. MnAPO-5 as an efficient heterogeneous catalyst for selective liquid phase partial oxidation reactions - S Chatterjee, P Bhanja, L Paul, M Ali and A Bhaumik, Dalton Transactions,47, 791 (2018).[IF:4.01] 19. Mesoporous CdS via network of self-assembled nanocrystals: Synthesis, characterization and enhanced photoconducting property - A K Patra, B Banerjee and A Bhaumik, Journal of Nanoscience & Nanotechnology,18, 256 (2018).[IF:1.64]

074 Amitava Patra, FASc, FNASc Senior Professor, Head and Associate Dean Our research focuses on nanomaterials based light harvesting systems and understand their fundamental photophysical processes such as charge transfer, electron transfer and energy transfer by using ultrafast spectroscopy. Associates : (1) Dr. P Mitra, (2) Dr. S Das, RA, (3) Dr. M Kr Barman,RA, (4) R Bera, SRF (Institute), (5) B Jana, SRF (CSIR), (6) D Bain, SRF (CSIR), (7) A Ghosh, SRF (CSIR), (8) Ms. S Maity, JRF (CSIR),(9) A Dutta, JRF (Inspire) and (10) G Ghosh, JRF (CSIR)

The development of light harvesting systems based on heterostructures for efficient conversion of solar energy to renewable energy is an emerging area of research. Here, we have designed heterostructures by using carbon dots (C-dots) and zinc oxide nanoparticles (ZnO NP) to develop an efficient light harvesting system. Interestingly, the conduction band and the valence band positions of ZnO NP are lower than the LUMO and HOMO positions of C-dots in this type II heterostructure of C dot–ZnO NP, which causes efficient charge separation and photocurrent generation. Steady state and time resolved spectroscopic studies reveal that an efficient photoinduced electron transfer occurs from C dots to ZnO NP and a simultaneous hole transfer occurs from the valence band of ZnO NP to the HOMO of C dots. The enhancement of photocurrent (11 fold) under solar light irradiation of the C dot–ZnO NP heterostructure opens up new possibilities to design efficient light harvesting systems. The design of new generation light-harvesting systems based on conjugated polymer nanoparticles (PNPs) is an emerging J. Phys. Chem. Lett. 2017, 8, 4608-4620 field of research to convert solar energy into renewable energy. Here, we focus on the understanding of the light harvesting processes like exciton dynamics, energy transfer, antenna The recent emergence of conjugated polymer-based effect, charge carrier dynamics, and other related processes nanostructured materials has stimulated a lot of interest in of conjugated polymer-based functional nanomaterials. developing light harvesting systems. Here, we describe the Spectroscopic investigations unveil the rotational dynamics formation of nanoparticles from polymer molecules [poly[2- of the dye molecules inside of PNPs and exciton dynamics methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEHPPV) of the self-assembled structures. A detailed understanding by adding a nonsolvent (water) and understand their collapsing of the cascade energy transfer for white light and singlet mechanism from the extended form by using molecular oxygen generation in multiple fluorophores containing a PNP dynamics simulations. Free energy calculations reveal that the system by time-resolved spectroscopy is highlighted. Finally, thermodynamically stable state of the polymer in water and ultrafast spectroscopic investigations provide direct insight 75% (v/v) water/THF mixture is a collapsed state. The red shift into the impacts of electron and hole transfer at the interface of the absorption band of the collapsed state is found due to in the hybrid materials for photocatalysis and photocurrent a change in polarity of the solvent. The change in intensity of generation to construct efficient light harvesting systems. the blue and red emission bands with a change in the solvent polarity is explained due to a change in conformation from

075 the extended state to the collapsed state of the polymer. 2. Core-Size dependent fluorescent gold nanoclusters and Ultrafast spectroscopic analysis reveals a systematic decrease ultrasensitive detection of Pb2+ Ion - D Bain, S Maity, B of the faster component at 554 nm (33 to 2 ps), indicating the Paramanik and A Patra, ACS Sustainable Chem. Eng., 6, energy transfer process. The faster component (150 fs) of the 2334(2018).[IF:5.951] time-resolved anisotropy decay due to the fast depolarization process confirms the interchain energy transfer in the collapsed 3. Nano-bio assemblies for artificial light harvesting systems state. The fundamental understanding of photophysics of -D Bain, S Maity and A Patra Proc. SPIE 10507, Colloidal conjugated polymer nanoparticles should pave the way for Nanoparticles for Biomedical Applications XIII, 105070C (23 future development of light harvesting systems. February 2018); DOI: 10.1117/12.2287324. Fluorescent metal nanoclusters(MNCs) consisting of several 4. Recent advances on the optical properties of Eu3+ ion to hundreds of metal atoms have emerged as a frontier doped nanomaterials - A Kar and A Patra; Journal of Nanosci. area of nano-research for their widespread applications in Nanotechnol. Accepted (2018) optics, catalysis, sensing and biology. The strategy has been undertaken to design MNCs based hybrid materials for 5. Nanoscale strategies for light harvesting -S Kundu and A different applications because of their superior photo stability Patra; Chem. Rev. (Thematic Issue, Light Harvesting), 117, and tunable photoluminescence. Diverse nanomaterials such 712(2017).(IF:47.928] as semiconductor QDs, graphene oxide, carbon QDs in conjugation with MNCs are designed for energy harvesting 6. Photon harvesting in conjugated polymer based functional applications.Our present research highlights the relaxation nanoparticles -B Jana, A Ghosh, and A Patra; J. Phys. Chem. dynamics of luminescent Cu NCs and electron transfer in their Lett., 8, 4608 (Perspective) (2017).[IF:9.353] composite with ImRGO. We have synthesized cysteine capped Cu NCs with bright emission and they are characterized by 7. Exciton dynamics and formation mechanism of MEH- steady state and time resolved spectroscopy. Ultrafast relaxation PPV polymer-based nanostructures -A Ghosh, B Jana, S mechanism of stable Cu NCs was investigated in detail. To Chakraborty, S Maiti, B Jana, H N. Ghosh and A Patra;J. Phys. design Cu NCs based nanocomposite, graphene oxide (GO) Chem. C,121, 21062(2017).[IF:4.536] surface was covalently modified with imidazolium group which leads to higher water solubility. The Cu NC-ImRGO hybrid was 8. An efficient charge separation and photocurrent generation prepared by electrostatic interaction of Cu NCs with ImRGO. in the carbon dot-zinc oxide nanoparticles composite -M Kr Steady state and ultrafast spectroscopic studies were being Barman, P Mitra, R Bera, S Das, A Pramanik and A Patra; used to understand the photoinduced electron transfer from Cu Nanoscale, 2017, 9, 6791, Nanoscale,9, 17143 (correction) NCs to ImRGO. The photoexcited electron transfer in Cu NCs (2017).[IF:7.367] based nanocomposites might be effective for optoelectronic, photovoltaic applications. 9. Strategy towards designing semiconducting polymer nanoparticle - Multichomophoric dye assembly -S Das, B Jana, T Debnath, A Ghoshal, A Kr Das and A Patra; J. Phys. Chem. C,121, 4050(2017).[IF:4.536]

10. Silver (I) induced conformation change of DNA : Gold nanocluster as spectroscopic probe -D Bain, B Paramanik and A Patra; J. Phys. Chem. C, 121, 46082017.[IF:4.536]

11. Design of CdTeSe/Porphyrin/Graphene composite for photo-induced electron transfer and photocurrent generation -Rajesh Bera, Bikash Jana, Bodhisatwa Mondal, Amitava Patra; ACS Sustainable Chem. Eng.,5, 3002(2017).[IF:5.951]

J. Phys. Chem. C 2017, DOI: 10.1021/acs.jpcc.7b09959 12. Interfacial charge transfer between zinc oxide nanoparticles and methyl viologen : influence of size -P Mitra, M Kr Barman, S Basu,S Das, A Pramanik and A Patra,Chemistry Select, 2, PUBLICATIONS IN JOURNALS : 9869 (2017) 1.Ultrafast relaxation dynamics of luminescent copper 13. Light harvesting and photocurrent generation in a nanoclusters (Cu7L ) and efficient electron transfer to 3 conjugated polymer nanoparticle-reduced graphene oxide functionalized reduced graphene oxide -S Maity, D Bain, K composite -A Ghosh, B Jana, S Maiti, R Bera, H N Ghosh and Bhattacharyya, S Das, R Bera, B Jana, B Paramanik, A Datta A Patra; Chem Phys Chem; 18, 1308 (2017).[IF:3.075] and A Patra; J. Phys. Chem. C, 122, 13354 (2018).[IF:4.536]

076 14. Enhancing the efficiency of DSSCs by the modification of TiO2 LECTURES DELIVERED: photoanodes using N, F and S, co-doped graphene quantum Invite talk at (1) Ludwig Maximilan Munic University, (2) LHP- dots -S Kundu,P Sarojinijeeva, R Karthick, G Anantharaj, G 2017, Banz Monastery, Germany, (3) Ramakrishna Mission Saritha, R Bera, S Anandan, A Patra, P Ragupathy, M Selvaraj, Vidyamandira, Belur Math, Kolkata, (4) IISER-Kolkata, (5) D Jeyakumarand K Vijayamohanan Pillai; Electrochimica Acta, Amity Universty, Kolkata, (6) IISER-Mohali, (7) INST Mohali, 242, 337 (2017).[IF:4.798] (8) IISc, Bengaluru, (8) MRS Trilateral Conference, Beijing, China, (9) NAPAFM-2017, Ravenshaw University, Cuttack, 15. Core size matters! High Raman enhancing core tunable Au/ (10) ICANN-2017, IIT, Guwahati, (11) RANST, NIST, (12) Ag bimetallic core-shell nanoparticles -D. Paital, T Sen, A. Patra, K K Haldar;Gold Bulletin,50, 313(2017).[IF:1.638] Symposium on DAE SSP, BARC, Mumbai, (13) TSRP-2018, BARC Mumbai, (14) CACEE-2018, TIFR, Mumbai, (15) SPIE 16. Structural and electronic investigation of metal-semiconductor Meeting, San Francisco, California, US, (16) NCGFM-2018, hybrid tetrapod hetero-structures -K K Haldar, V Y Muley, S Datar CSIR-CMERI, Durgapur, (17) RAMSE-2018, Dhanbad, (18) and A Patra;Gold Bulletin, 50, 105 (2017)[IF:1.638] ICONSAT-2018, IISc, Bangalore, (19) Mody University of Science and Technology, Jaipur. Ph.D. DEGREE AWARDED : (1) B Paramanik (JU); (2) M Kr. Barman (JU)

SPONSORED PROJECT

• Photophysicaland photochemistry….. Nanostructure (DST- SERB) • Decay dunamics…….…. Application (DAE)

077 Bimalendu Deb Professor Theoretical atomic, molecular and optical sciences Associates : (1) A Paul, SRF (Institute), (2) D Sardar, SRF (CSIR), (3) S Mal, JRF (CSIR), (4) K Adhikary, JRF (DST-Project), (5) A Kr Saha, JRF (Institute) and (6) S Naskar (Honorary Research Fellow)

We discuss the physical conditions under which 2.Electromagnetically induced transparency in two- electromagnetically induced transparency is possible in a colourultracoldphotoassociation - S Naskar, S Saha, T Nath Dey continuum-bound photoassociation (PA) system. We develop and B Deb; J. Phys. B: At. Mol. Opt. Phys. 50, 125003 (2017). a density matrix approach to calculate the linear optical [IF:] susceptibility due to a probe laser beam propagated through a 3. Interaction of a Laguerre–Gaussian beam with trapped PA system of ultracold atoms. We describe the absorptive and Rydberg atoms - K Mukherjee, S Majumder, P Kr Mondal and dispersive properties of a two-colour PA system where one laser B Deb; J. Phys. B: At. Mol. Opt. Phys. 51, 015004 (2018). drives a continuum–bound photoassociative transition and the [IF:] other laser a bound–bound transition. 4. Number-phase uncertainty and quantum dynamics of bosons and fermions interacting with a finite range and large We study bosons or fermions trapped in a quasi-1D DW potential scattering length in a double-well potential - K Adhikary, S interacting via a 3D finite-range two-body interaction potential Mal, B Deb, B Das, K RaiDastidar and S Dutta Gupta; J. with large scattering length. Under tight-binding or two-mode Phys. B: At. Mol. Opt. Phys. 51, 045302 (2018).[IF:] approximation, we describe in detail the effects of the range of interaction on the quantum dynamics and number-phase SPONSORED PROJECT: uncertainty in the strongly interacting or unitarity regime. We • Theoretical study……. Double well Potential (DST-SERB) define the standard quantum limit (SQL) for phase and number fluctuations, and describe two-mode squeezing for number LECTURES DELIVERED: and phase variables. Our results show intriguing coherent Invite talk (1) CoTOp-17, IISER-Kolkata, (2) IWBECRP, dynamics of number-phase uncertainty with number squeezing SNBNCBS, Kolkata. for bosons and phase squeezing for fermions. Our results may be important for exploring new quantum interferometry, Josephson oscillations, Bose–Hubbard and Fermi–Hubbard physics with ultracold atoms in DW potentials or DW optical lattices.

PUBLICATIONS IN JOURNALS : 1. A unified approach to and V-type systems with one continuum - S Sen, T K Dey and B Deb; Journal of Modern Optics, pp.1-14 (2017).[IF:]

078 Shyamal Kumar Saha Professor Electrical, optical and magnetic properties of graphene based functionalized nanostructures are investigated. 2D magnetic nanostructures are grown on graphene or MoS2 surfaces. Atomic Co has been manipulated on graphene surface to investigate proximity induced ferromagnetism in graphene. Magnetic MoS2 surface is used to grow unstable -Co(OH)2 phase to achieveferromagnetic ordering. Optical properties of metal organic framework (MOF) and carbon based quantum dots have been investigated for WLED and sensing applications. Novel 2D layered- type glass/graphen enanocompositesare synthesized for electrode materials and supercapacitor applications. Temperature dependent supercapacitive performance is

also investigated in La2O3nano sheets decorated reduce graphene oxide. Associates : (1) S Bhattacharya, SRF (Inspire), (2) M Banerjee, SRF (Inspire), (3) S Mandal, (Honorary), (4) M Miah,SRF (Inspire), (5) T Kr Mondal,SRF (CSIR) (6) D Haldar, SRF (CSIR),(7) P Hota, SRF (CSIR), (8) T Mandal, SRF (CSIR), (9) A Debnath, JRF (Inspire), (10) S Bag, JRF (Inspire), (11) C Majumder, JRF (Inspire), (12) A Ghosh, (SERB-NPDF) and (13) S Bose, RA (Institute)

When a nanomaterial (i.e. nanosheet, adatom, nanoflake) of transition metal is grown on a two dimensional template like graphene, MoS2, etc., then, because of charge transfer effect unusual magnetic ordering is generated We have grown a Co atom on a graphene sheet and a Co(OH)2 phase on a MoS2 sheet and investigated their magnetism. Co atom capped porphyrin is attached on the graphene surface to realize the induced magnetic properties arising due to the charge transfer effect at the interface. Ferromagnetic ordering with fairly large coercivity (~516 Oe) is observed as a result of this induced magnetism in graphene due to the presence of a transition metal atom on the graphene surface. Temperature dependent magnetotransport has also been investigated to understand the effect of spin-orbit coupling arising due to the electric field generated at the interface as a result of this charge transfer effect.[Appl. Phys. Lett., 111, 042402 (2017)] Because of turbostratical disorder along c-axis the -Co(OH)2 phase is very unstable and continuously transformed into the stable -Co(OH)2phase. Using a MoS2sheet as a two-dimensional template, we have been able to synthesize a stable -Co(OH)2 phase in addition to a-Co(OH)2 phase by varying the layer thickness. It is seen that for thinner samples the phase,while for thicker samples phase, is grown on the MoS2 surface. Magnetic measurements are carried out for the samples over the temperature range from 2 to 300 K and it is seen that for the phase, ferromagnetic ordering with fairly large coercivity (1271Oe) at 2 K is obtained instead of the usual antiferromagnetism. The most interesting result isthe observation of ferromagnetic ordering with a Curie temperature more than 100 Kin the -Co(OH)2phase. Complete saturation in the hysteresis curve under application of very low field havingcoercivity of ~162 Oe at 2 K and 60 Oe at 50 K is obtained.[Phys. Rev. B, 96, 214433 (2017)]

079 STUDY OF OPTICAL PROPERTIES OF METAL ORGANIC SYNTHESIS OF NOVEL 2D NANOCOMPOSITES FRAMEWORK (MOF) AND CARBON BASED QUANTUM AS ELECTRODE MATERIALS FOR SUPERCAPACITOR DOTS FOR WLED AND SENSING APPLICATIONS : APPLICATIONS AND TEMPERATURE DEPENDENT Metal–organic frameworks are a class of porous materials SUPERCAPACITIVE PERFORMANCE IN LA2O3 NANO where the metal centre is attached to other anionic or neutral SHEET DECORATED REDUCE GRAPHENE OXIDE : ligands for extension into 1D, 2D or 3D framework. Most of the Hence in this present work, silica nanoglass is grown onto white light-emitting MOFs are based on rare earth metal doping reduced graphene oxide (rGO) layers by a simple sol-gel or encapsulation of some luminescent dye molecules within the method and layer-by-layer structure of rGO/nanoglass pores of MOF, such that the collective luminescence covers the composite is fabricated. Charge transport and electrochemical whole visible region. So, white light emission from a non rare properties of the composite is studied to estimate the potential of earth-based single MOF is desirable because of low power this material in supercapacitor applications. The main objective consumption, lower manufacturing costs, and environmental of this research is to explore the advantage of non-bridging safety purposes. For that, a Zinc-based MOF was synthesized, oxygen sites, high specific surface area and porosity of silica which showed white light emission with a CIE index of (0.31, nanoglass for the enhancement of the specific capacitance 0.33) upon excitation at 260 nm. The white light emission arises of the composite. On the other hand, graphene is used as due to three peaks, among which two peaks at 384 nm and a two dimensional template for the growth of the nanoglass ‘|7N7“N7“\` and also to introduce considerable electronic conduction in respectively, and the new peak at 570 nm is due to the charge the composite. The specific capacitance of the rGO/nanoglass transfer phenomenon from the pyridine moiety to the linker. composite is measured to be 370 F/g at a current density of 0.8 Finally, a light-emitting diode was fabricated using the MOF as A/g with a higher cyclic stability (81 %) after 2000 cycles. The the active material, which showed white electroluminescence charge transport in the composite structure is also investigated spectra. [J. Mater. Chem. C, 6, 614 (2018)] to understand the electrochemical properties. It is found Study of sensing properties of nitroexplosives using that Simmons tunneling or direct tunneling is the dominant luminescent carbon based quantum dots is an interesting mechanism of charge conduction between the graphene area of research. Enhancement in sensing ability exploiting layers through the potential barrier of silica nanoglass phase. edge states and doped states in quantum dots is an elegant [Nanoscale, 10, 5539 (2018)] approach. graphene quantum dots (GQD) are co-doped It is well known that high performance supercapacitor with by nitrogen and sulphur to produce large number of high energy and power density is usually degrade at high localized energy levels near conduction band. Remarkable temperatures. Therefore, to explore the thermal stability, enhancement in fluorescence quenching effect compared to temperature dependent study of supercapacitor is very their individual doped states either by nitrogen or sulphur useful. In this work, La2O3 nanosheet decorated reduce is observed using only 90 μM solution of 2,4,6-trinitro graphene oxide is synthesized to use it as electrode material phenol (TNP) via charge transfer among these doped in high performancesupercapacitor. Temperature dependent states to detect trinitrophenol selectively. The detection limit electrochemical behavior viz. charging discharging and has been calculated to about 19.05 ppb. The origin of this current voltage (I-V) characteristics are studied to explore the ultra high fluorescence quenching and low detection limit thermal stability of the system. In comparison to pristine rGO, is the presence of electron rich edge states due to N the specific capacitance of La2O3decorated sample is found and S dopants.[Sensors and Actuators B: Chemical, 257, to increase by 158% at temperatures 30 oC and 205% at 586 (2018)] 70 oC respectively. The highest value obtained is 751 F/g at temperature 70 oC at a current density of 1 A/g. Remarkably the specific capacitance of hybrid electrode retains 78% of its original value at temperature 30 oC; conversely 67% of its original value even at higher temperature 70 oC after 2000 cycles.Theenhancement of specific capacitance is explained

by the charge transfer effect between rGO and La2O3 at the interface.[Electrochimica Acta, 260, 449 (2018)]

080 5. Pure white light emission from a rare earth-free intrinsic metal organic framework and its application in a WLED - T Mondal, S Mondal, S Bose, D Sengupta, U K Ghorai and S KSaha;J. Mater. Chem. C 6, 614 (2018).[IF:5.256] 6. Synthesis of lithium superionic conductor by growth of a nanoglass within mesoporous silica SBA-15 template - S Chatterjee, M Miah, S K Saha and D Chakravorty; Journal of Physics D: Applied Physics, 51, 135301 (2018).[IF:2.588] 7. Photo-induced conductivity in 2, 6-diaminopyridine PUBLICATIONS IN JOURNALS functionalized graphene oxide containing Eu2+ for 1.Synthesis of multilayered structure of nanodimensional silica optoelectronic applications - S Mondal, A Gupta, B K Shaw glass/reduced graphene oxide for advanced electrochemical and S K Saha; Optical Materials, 73, 555 (2017).[IF:2.238] applications -A Ghosh, M Miah, C Majumder, S Bag, D 8. Observation of ferromagnetic ordering in a stable Chakravorty and S K Saha; Nanoscale,10, 5539(2018). -Co(OH)2 phase grown on a MoS2 surface - A Debnath, S [IF:7.367] Bhattacharya and S K Saha; Physical Review B, 96, 214433 2. Temperature dependent supercapacitive performance in (2017).[IF:3.836]

La2O3 nano sheet decorated reduce graphene oxide - M Miah, 9. Ferromagnetism in graphene due to charge transfer from S Bhattacharya, D Dinda, S K Saha; Electrochimica Acta, 260, atomic Co to grapheme -PHota, A J Akhtar, S Bhattacharya, 449 (2018).[IF:4.798] M Miah and S K Saha; Appl. Phys. Lett., 111, 042402(2017). 3. Nitrogen, sulphur co-doped graphene quantum dot: An [IF:3.411] excellent sensor for nitroexplosives - T K Mondal, D Dinda, S K Saha; Sensors and Actuators B: Chemical, 257, 586 (2018). Ph.D. DEGREE AWARDED : [IF:5.401] (1) Diptiman Dinda (JU) 4. Defect induced photoluminescence in MoS2 quantum dots and effect of Eu3+/Tb3+ co doping towards efficient white SPONSORED PROJECT : • Optical and electrical ….. cell application (DST-SERB) light emission - D Haldar, A Ghosh, S Bose, S Mondal, U K • Multifunctional hybrid …… water (DST-UKIER) Ghorai, S K Saha; Optical Materials, 79, 12 (2018).[IF:2.238]

Sugata Ray Associate Professor Experimental material science: Structure property relationship, magnetic and dielectric studies of single and polycrystalline materials and water purification. Associates : (1) P Aich, SRF (CSIR), (2) A Bandyopadhyay, SRF (CSIR), (3) S Islam (Part-time), (4) R Ali Saha, JRF (CSIR), (5) Md. S Khan (UGC Fellow), (6) S Bera, JRF (CSIR), (7) S Das (UGC), (8) S Halder, JRF (CSIR), (9) Dr. G Mishra, RA-I

Spin-orbit coupling (SOC) is found to be crucial for of local distortions. We find that subtle variations in the local structure of Ba MIr O (M =Mg, Sr, and Ca) lead to markedly understanding the magnetic and electronic properties of 5d 3 2 9 transition metal oxides. In 5d systems, with Ir5+ ions,where ideally different magnetic properties. While SOC plays a pivotal role in a nonmagnetic J = 0 ground state is expectedto be stabilized explainingthe insulating ground states of these systems, it is seen that Ba MgIr O , having a P63/mmc symmetry, does notorder in the presence of strong SOC, often spontaneous moments 3 2 9 are generated due to hopping inducedsuperexchange. This down to low temperature despite having antiferromagnetic exchange interactions, while Ba CaIr O showsweak dimer- effect is more pronounced when the Ir atoms are close by, as in 3 2 9 like features and stabilizes in C2/c’ magnetic configuration systems with Ir2O9 dimers in6H Ba3MIr2O9 compounds where with no net moment, and Ba SrIr O possesses a ground state magnetism is an outcome of complex Ir-O-Ir exchange paths, 3 2 9 and is stronglyinfluenced by the presence corresponding to the magnetic space group C2’/c’and exhibits ferromagnet-like features.

081 Natural growth of iron oxyhydroxidenanoclusters in water, PUBLICATIONS IN JOURNALS : broadly named as ferrihydrite (Fh), has a serious role in water 1. Ba3MIr2O9 hexagonal perovskites in the light of spin-orbit remediation as Fh is known to form inner sphere complexes coupling and local structural distortions - A Nag, S Bhowal, F with many inorganic contaminants, thereby acting as an Bert, A D Hillier, M Itoh, I Carlomagno, C Meneghini, T Sarkar, efficient adsorbent of heavy metals including arsenic. However, R Mathieu, I Dasgupta and S Ray; Phys. Rev. B, 97, 064408 difficulty lies in extracting such clusters from water at low (2018).[IF:3.836] concentrations and varied ranges of pH other than the pH of their respective point-of-zero-charge (PZC) because repulsive 2. Development of half metallicity within mixed magnetic phase forces between their charged surfaces keep the clusters as of Cu1-xCoxMnSb alloy -A Bandyopadhyay, S Kr Neogi, A Paul, stable colloidal suspension. The standard charge neutralization C Meneghini, S Bandyopadhyay, I Dasgupta, and S Ray; J. based coagulation involving iron or aluminium based common Phys.: Condens. Matter, 30, 205802 (2018).[IF:2.64] coagulators cannot be used here as the primary coagulator and the colloidal target both bear identical surface charges. Ph.D. DEGREE AWARDED : Therefore, the only possible methods of removal seem to be (1) Arindam Malakar (CU); (2) Abhishek Nag (CU) microfiltration or sweep flocculation creating large amount of unstable toxic sludge. Here we show that, it is indeed possible SPONSORED PROJECT to extract these ‘soluble’ nanoclusters fromwater by charge • Synthetic mineralization …… from water (DST) neutralization, 24 if effective coagulants of oppositesurface • Anionic doping ….. achieve multifunctionality charges are applied. This is achieved here by simply adding a limited amount of commercial zinc acetate salt, which results in LECTURES DELIVERED : natural formation of layered zinc hydroxide (LZH) nanosurfaces Invited talk at (1) Moulana Azad College, Kolkata, (2) ICFNN, of opposite zeta potential inside water (pH~4-10), and which Kathmandu, (3) SINP, Kolkata, (4) PSCES, IIT-Mandi. works as flocculants too. We demonstrate that this method can be easily employed for arsenic (As) decontamination of water, containing both Fe and As, a common occurrence in the groundwater of India.

Fig. 1: Zero field cooled (thinner lines) and field cooled (thicker circles) magnetic susceptibilities measured with

magnetic fields (a) 0.005 T and (b) 0.5 T for Ba3MIr2O9 (M = Mg, Ca, Sr). The inset to panel (a) shows the same curves for 0.005Tin enlarged form. The inset to panel (b) shows the CW(circles) and effective magnetic moment per

Ir (triangles) obtained for different temperature ranges of fitting the susceptibility data of Ba3MgIr2O9 under 0.5 T field using the Curie-Weiss law. The x axis represents the lower temperature value to which each fitting has been done from

300 K. (c) Time evolutions of muon polarization and their fittings (continuous lines) for Ba3MgIr2O9 in zero external field at different temperatures. (d) Fluctuation rate of the internal fields versus temperature obtained from the fitting

for Ba3MgIr2O9 and Ba3ZnIr2O9.

082 Narayan Pradhan Professor Physical chemistry associated to materials design Associates : (1) S K Mehetor, SRF (CSIR), (2) S Kr Dutta, SRF (CSIR), (3) S Bera, SRF (CSIR), (4) A Dutta, SRF (CSIR), (5) S Das Adhikari, SRF (CSIR), (6) R Kr Behera, JRF (CSIR), (7) B Hudait, JRF(CSIR), (8) S Sen, JRF (CSIR).

Understanding the crystal growth of semiconductor nanocrystals 7. From large scale synthesis to light emitting applications and study of their photocatalytic, photoelectrocatalytic and of ternary I-III-VI semiconductor nanocrystals : The inspiring electrocatalytic properties. The major focus of research greener material emitters - B Chen, N Pradhan and H Zhong emphasis on multinary semiconductor nanocrystals, J. Phys. Chem. Lett.,9, 435 (2018).[IF:8.709] perovskitenanocrystals and hetero-nanostructures. In synthesis, 8. Tuning size of CsPbBr3 perovskitenanocrystals : All in a mostly we target modular approach of connecting multiple fixed temperature - A Dutta, S K Dutta, S Das Adhikari and N semiconductors together along with noble metals. These are Pradhan; ACS Energy Letters, 03, 329 (2018).[IF:12.27] further used catalyst for water splitting. SPONSORED PROJECT PUBLICATIONS IN JOURNALS • Architecting visible-NIR ….. steel waste water (DST) 1. Chemically tailoring the dopant emission in Mn doped CsPbCl3perovskitenanocrystals - S Das Adhikari, S Dutta, A Dutta, A Guria and N Pradhan; Angew. Chem., Int. Ed., 56, 8746 (2017).[IF:12.102] 2. Symmetry break and seeded 2D anisotropic growth in ternary

CuGaS2 nanocrystals - S Das Adhikari, A Dutta, G Prusty, P Sahu and N Pradhan, Chemistry of Materials, 29, 5384 (2017). [IF:9.890] 3. Phase stable CsPbI3 nanocrystals:The reaction temperature matters -A Dutta, S Dutta, S Das Adhikari and N Pradhan; Angew. Chem., Int. Ed., Accepted Article (2018).

4. Layered perovskites to Mn doped CsPbCl3 perovskite platelets - S Das Adhikari, A Dutta, S Dutta and N Pradhan; ACS Energy Letters; Accepted Letter (2018). 5. Predominated thermodynamically controlled reactions for suppressing cross nucleations in formation of multinary substituted tetrahedritenanocrystals - S Bera, A Dutta, M Sankararao, D Ghosh and NPradhan; J. Phys. Chem. Lett., 9, 1907 (2018).[IF:8.709] 6. Synergistic effect of inactive iron oxide core on active nickel phosphide shell for significant enhancement in the OER activity - A Dutta, S Mutyala, A Samantara, S Bera, B K Jena and N. Pradhan; ACS Energy Letters, 2018, 3, 141 (2018).[IF:12.27]

083 Praveen Kumar Assistant Professor (Joined on 27.2.18)

• Growth, characterization, andoptimization of III-nitrides layers/micro/nano-structures on different substrates (Si,

Al2O3, etc) followed by the self-aligned epitaxial growth of metal nanocrystals for LEDs, Tandem/Intermediate-bandgap solar cells, HEMTs/FETs,andPhotoelectrodes applications. • Metal/Semiconductor Interface, Surface Physics,and Nanostructures • Water splitting and hydrogen generation using nanostructures • Sensors based on semiconductors (III-V, Si, Oxides) and carbon nanostructures.

PUBLICATIONS IN JOURNALS 1.Ultrafast carrier dynamics of InxGa1-xN nanostructures grown directly on Si(111) - P Devi, P E D S Rodrigueze, M Kumar, V D Shivling, R Noetzel, C Sharma, R K Sinha and M Kumar; Optical Materials, 79, 475 (2018).[IF:2.023]

084

Department of organic Chemistry

Department Profile People Faculty : 06 Post-doctoral Research Associate : 08 Ph.D. Students : 47 Non-Academic Staff : 06 Extra Mural Funding Projects (ongoing) : 14 Research Achievements Surajit Sinha Ph.D. degree awarded : 06 Head of the Department Academic Activities Seminars organized : 12 Talks delivered by members of department in conferences/symposia (National) : 27 Talks delivered by members of department in conferences/symposia (International) : 00

086 Subhas Chandra Roy Senior Professor Stereocontrolled synthesis of bioactive natural products and related compounds, development of new synthetic methodologies

Titanocene(III) chloride (Cp2TiCl) mediated radical induced PUBLICATIONS IN JOURNALS methodology has been developed for the synthesis of 3-substitued (1) Titanocene(III) chloride mediated radical induced synthesis isobenzofuranones from activated bromo compounds and of isobenzofuranonesvia allylation of aldehydes followed by in methyl-2-formyl benzoate in good to moderate yield. The situlactonization - S Mukherjee and S C Roy, Ind. J. Chem., radical initiator titanocene(III) chloride (Cp2TiCl) was prepared 57B, 85 (2018).[IF:0.397] from commercially available Cp2TiCl2 and Zn dust in THF under argon.

O COOMe Cp2TiCl, THF + R-Br O CHO R = benzyl, 6 h, r.t allyl, naphthyl 20% H2SO4 R

Parthasarathi Dastidar, FASc Professor Crystal Engineering, Supramolecular Chemistry, Molecular Gels, Molecular nanotubes, Coordination polymers and microporous materials, Crystal Growth Associates : 1) R Ray, SRF (CSIR), (2) R Parveen, SRF (CSIR), (3) K Sarkar, SRF (CSIR),(4) P Chakraborty, JRF (INSPIRE), (5) P Biswas, JRF (Institute), (6) S Mondal, JRF (UGC), (7) S Bera, JRF (UGC), (8) S Ahmed, JRF (UGC), (9) Dr. A Biswas, RA (NPDF) and (10) Dr. SKhatua, RA (NPDF)(Inspire), (10) S Sarkar, JRF (CSIR), (11) R Ghosh, JRF (CSIR), (12) S Mondal, JRF (CSIR) and (13) S Pal (DST-SERB/NPDF)

Application of supramolecularsynthons in the context of crystal engineering is being exploited to generate materials having potential for various applications such as topical gels for drug delivery, coordination polymer based metallogels for drug delivery, cell imaging, catalysis, charge transfer complexes displaying semiconducting behaviour.

087 PUBLICATIONS IN JOURNALS PUBLICATIONS IN BOOKS CHAPTER 1.Hand ground nanoscale Zn(II)-coordination polymers derived / MONOGRAPHS from NSAIDs : Cell migration inhibition of human breast cancer 1.Designing soft supramolecular materials using cells - M Paul, K Sarkar, J Deb and P Dastidar; Chem. Eur.J., intermolecular interactions - P Dastidar, R Roy, R Parveen, S 23,5736, (2017).[IF:5.317] Ganguli, J Majumder and M Paul; Functional Supramolecular 2.Nitrogen ligand-based molecular building blocks –P Dastidar, Materials: From Surfaces to MOFs RSC Book Chapter, Ed. S Ganguly, K Sarkar, In: Atwood, J. L., (ed.) Comprehensive , 2017 Supramolecular Chemistry II, vol. 7, pp. 207–242. Oxford: Elsevier. SPONSORED PROJECT • Developing Organic-Inorganic-Hybrid-Systems…...... 3.Supramolecular synthon approach in developing anti- Biomedical Applications (DST-SERB). inflammatory topical gels for In Vivo self-delivery -R Roy and P Dastidar; Chem. Eur. J.,23, 15623 (2017).[IF:5.317] 4.Supramolecular hydrogel derived from a C3-symmetric boronic acid tecton for stimuli responsive release of insulin and doxorubicin -K Sarkar and P Dastidar; Langmuir, 34, 685 (2018).[IF:3.833] 5.Multi-functional supramolecular gelators derived from simple organic salts having naphthalenediimide (NDI) core -R Parveen and P Dastidar; Chem. Asian J., 13,170 (2018).[IF:4.083] 6.Supramolecular gels derived from the salts of variously substituted phenylacetic acid and dicyclohexyl amine : Design, synthesis, structures and dye adsorption, -R Roy, T Kr Adalder and P Dastidar; Chem. Asian J., 13, 552 (2018). [IF:3.088]

Surajit Sinha Professor and Head Organic synthesis and chemical biology, zebrafish embryogenesis, antisense reagents for gene therapy Associates : (1) Dr. B Nandi, RA-1 (Institute), (2) H Khatra, SRF (CSIR), (3) J Bhadra, SRF (Institue), (4) K CGhosh, SRF (CSIR), (5) I Banerjee, SRF (CSIR), (6) JKundu, SRF (IntPhd, CSIR), (7) C Bose, JRF (DST Women’s scientist), (8) A Kr Das JRF (CSIR- UGC),(9) R Bargakshatriya JRF (CSIR), (10) U Ghosh, JRF (CSIR), (11) Dr. P Banerjee, RA-1 (Institute), (12) S Gupta (IntPhD) and (13) A Gupta (IntPhD)

Synthesis of dithiol-containing artificial amino acid and its incorporation into the peptide backbone has been achieved. Novel molecular transporter has been synthesized which has cell transfection property in the presence of serum. It has been shown to deliver antisense morpholino oligonucleotides in vitro and in vivozebrafisn model for gene silencing. It has been used for the delivery of antisense RNA for the treatment of Duchenne Muscular Dystrophy. Small molecule-mediated inhibition of hedgehog signaling pathway.

088 PUBLICATIONS IN JOURNALS SPONSORED PROJECT 1.Hedgehog Antagonist Pyrimidine--Indole Hybrid Molecule • Molybdenum-containing ……… CO2 reduction (Indo- Inhibits Ciliogenesis through Microtubule Destabilisation -S Sinha French, CEFIPRA 1). et. al., Chem Bio Chem2018, DOI: 10.1002/cbic.201700631. • Synthesis and evaluation of gene ………. tyrosine kinase 2.Cationic Cytosine Morpholino-Based Transporters: Synthesis pathaway (CSIR). and Regulation of Intracellular Localization - B Nandi, H Khatra, • Validation of th potential of a ……. Duchenne muscular P P Khan, J Bhadra, S Pattanayak and S Sinha, Chem Select, dystrophy. 2,5059 (2017).[IF: ] Ph.D. DEGREE AWARDED 3.Discovery of hedgehog antagonists for cancer therapy –H (1) J Bhadra (JU), (2) H Khatra (JU) Khatra,C Bose and S Sinha; Current Med. Chem.,24,1 (2017). [IF:3.853] LECTURES DELIVERED Invited talk at (1) International Conference on Molecular PATENT FILED Signaling, Hyderabad; (2) DART International Conference at • DART, Bangalore “IGT Conjugated Antisense Bengaluru Oligonucleotides for inducing exon skipping in Duchenne Muscular Dystrophy.” S. Sinha, A. Shastry

Rajib Kumar Goswami Associate Professor Organic Synthesis (Natural Product Chemistry) Associates : (1) Dr. T Kr Kuilya, RA-1 (Institute), (2) Dr. A Kundu, RA-1 (CSIR), (3) S Chatterjee, SRF/RA-1 (Institute); (4) S Das, SRF (CSIR), (5) S Guchhait, SRF (CSIR), (6) D Paul, SRF (CSIR), (7) G HMandal, JRF/SRF (CSIR), (8) D Saha, JRF (CSIR), (9) J Mondal, JRF (CSIR) and (10) SSaha, JRF (UGC)

Every year novel molecular structures are discovered from the natural sources, usually in minute quantities. Some of them turn out to be highly important for the benefit of our society. In order to learn the physical, chemical and biological properties of these important molecules, they have to be synthesized in enough quantities. In this process, the structure of a novel complex molecule, which is usually based on physical data, is also unambiguously proved by the synthesis. Investigation of the physical, chemical and biological properties of the molecule then allows one to design new analogs of the natural products that might be more valuable. With this view in mind, we envisaged the total synthesis of carolacton (1), separacenes A and B (2, 3), pestalotioprolides G and H (4, 5) and cytospolide PUBLICATIONS IN JOURNALS E (6). Separacenes A and B, pestalotioprolides G and H and 1.Stereoselective total synthesis of carolacton -T Kr Kuilya and cytospolide E are anticancer natural products where ascarolacton R K Goswami; Org. Lett.,19 (9),2366 (2017).[IF:6.579] is antibacterial marine natural product. We developed efficient 2.Total synthesis of marine natural products separacenes A synthetic routes to access most these molecules. Our efforts and B -S Das and R K Goswami; Org. Biomol. Chem.,15, for cytospolide E finally produced 8-epi-9-epi-cytospolide 4842(2017).[IF:3.564] E (7). Our synthetic study revealed that proposed structure of pestalotioprolides H needs to be corrected. The synthesized 3.Total synthesis of pestalotioprolide G and putative structure analogues of separacenes A and B were tested for anticancer of pestalotioprolide H -D Paul, S Das, and R K Goswami;J. activities and some of them were found promising. Org. Chem., 82, 7437 (2017).[IF:4.849]

089 4. Studies directed toward the stereoselective synthesis of LECTURES DELIVERED cytospolide E -S Chatterjee, T Kr Kuilya, and R K Goswami; ACS Invited talk at (1) Workshop on Introduction to Asymmetric Omega,3, 1041 (2018).[IF: ] Synthesis, Vadodara, Gujrat; (2) NCC-17 Symposium, Vadodara, Gujrat. Ph.D. DEGREE AWARDED (1) S Chatterjee (JU) SPONSORED PROJECT • Total Synthesis of Biologically Active NonanolidesCytospolides and Decytospolides (CSIR). • Stereoselective total synthesis of ……. their biological activities (DST)

Jyotirmayee Dash Associate Professor Bio-organic Chemistry Associates : (1) S Maiti, SRF (Int PhD), (2) D Dutta, SRF (Institute), (3) D Panda, SRF (DST Project), (4) M Debnath, SRF, (Inspire), (5) P Saha, SRF (Institute), (6) R Paul, SRF (Inspire), (7) T Mandal, SRF (CSIR), (8) G Chakraborty, JRF (CSIR), (9) T Ghosh, SRF (CSIR), (10) T Bhattacharyya, JRF (CSIR), (11) S Jana JRF (CSIR), 12) R Chaudhuri, JRF (UGC), (13) S Karmakar, JRF (CSIR), (14) Dr. L Burgula, RA (DST), (15) Dr. T Das, RA (DBT),(16) A Gorai, JRF (CSIR), (17) A Maity, JRF (Inspire) (18) R Paul, JRF, (Inspire) and (19) K Fatma, JRF (UGC)

REGULATION OF GENE EXPRESSION BY TARGETING 3.Human telomeric G-quadruplex selective fluoro-isoquinolines DNA SECONDARY STRUCTURES: induce apoptosis in cancer cells - S Maiti, P Saha, T Das, I Nucleic acids adopt non-canonical secondary structures that are Bessi,H. Schwalbe and J Dash; Bioconjugate Chemistry, DOI: hypothesized to play key biological roles for gene regulation and 10.1021/acs.bioconjchem.7b00781.[IF:4.82] cellular functions. G-rich and C-rich DNA sequences fold into 4.Guanosine derived supramolecular hydrogels: Recent four stranded G-quadruplex (G4) and i-motif structures that are developments and future opportunities - T Bhattacharyya, P prevalent in the promoter regions of several genes and telomeres of Saha and J Dash; ACS Omega, , 3, 2230 (2018).[IF: ] human genome. We have shown that small molecules with selective recognition properties towards these DNA secondary structures can 5.On water promoted Ullmann type C-N bond forming regulate expression of oncogenes (Figure 1). Therefore, G4 and reactions: Application to carbazole alkaloids by selective i-motifs have emerged as promising targets for pharmacological N-arylation of aminophenols - G Chakraborti, S Paladhi, intervention in cancer and neurodegenerative diseases. TMandal and J Dash; Journal of Organic Chemistry, DOI: 10.1021/acs.joc.7b03020; Special issue on ‘Organic & Biocompatible Transformations in Aqueous Media’; (2018). [IF:4.85] 6.Supramolecular hydrogel inspired from DNA structures mimics peroxidase activity – T Bhattacharyya, Y P Kumar and J. Dash; ACS Biomaterials Science & Engineering, 3, 2358(2017).[IF:3.2] PUBLICATIONS IN JOURNALS 7.Preferential targeting of i-motifs and G-quadruplexes by 1.Self-assembly of a guanosine derivative to form nanostructures small molecules - M Debnath, S Ghosh, A Chauhan, R Paul, K and transmembrane channels - R N Das, Y P Kumar, S A Kumar, Bhattacharyya and J. Dash; Chemical Science, 8, 7448(2017). O MSchütte, C Steinem and J Dash; Chemistry-A European [IF:8.67] Journal, (accepted) (2018).[IF:5.32] 8.Zinc-mediated efficient and selective reduction of carbonyl 2.Design and synthesis of novel polyamine collector to recover compounds - T Mandal, S Jana and J. Dash; European iron values from iron ore slimes - A SPatra, N V R Nulakani, Y Journal of Organic Chemistry, 33, 4972(2017).[IF:3.07] P Kumar, V Subramanian, J Dash andA K Mukherjee, Powder Technology, 325, 180 (2018).[IF:5.32]

090 9.Target guided synthesis using DNA nano-templates for PATENT FILED : selectively assembling a G-quadruplex binding c-MYC inhibitor - • Peptidomimetic ligands regulate BCL-2 expression D Panda, P Saha, T Das and J. Dash; Nature Communications, by stabilizing DNA secondary structures - JDash*, M. 8, 16103(2017).[IF:12.12] Debnath, A Chauhan, R Paul, Indian Patent Application Highlighted in The Hindu, http://www.thehindu.com/sci-tech/ No. 201731028836 dated 14-08-2017. health/a-quicker-novel-approach-to-cancer-drug-discovery/ article19331788.ece/amp/-http://www.natureasia.com/en/ SPONSORED PROJECT nindia/article/10.1038/nindia.2017.110 • Targetting four standarded ….. prolinamidederivativs 10.Bipyridine facilitates regioselective dimerization of alkynes in • Inhibition of Cancer Cell Proliferation by Targeting Human the absence of transition metal -G C Midya, B Parasar, S Maiti Telomeric G-quadruplex with Nucleoside Derivatives and J Dash; Chemistry Select, 2, 5032 (2017). (DBT-Cancer Biology). • Targeting and Mimicking Nucleic ……….Chemistry 11.Amino acid derived naphthalenediimides as versatile paradigm G-quadruplex binders - D M Rasadean, B Sheng, J Dash and G D • Design ……. DNA Recogniton (DST-SERB) Pantos; Chemistry-A European Journal, , 23 (35), 8491(2017). • Recyclable magnetic …… enantioselective synthesis [IF:5.32] • Tata Stel Project PUBLICATIONS IN BOOKS CHAPTER/MONOGRAPHS LECTURES DELIVERED (1) Targeting G-quadruplex with small molecules: An NMR Invited talk at (1) RSC-NOST, Leeds Beckett University, UK;(2) view - I Bessi, J Wirmer-Bartoschek, J Dash, H Schwalbe; Symposium on SCBDD-2017, Bose Institute, Kolkata; Modern Magnetic Resonance: 2nd edition, 2017, 1-22 (3) Conference on ICCHD-2018 at Heritage Institute of doi:10.1007/978-3-319-28275-6_126-1 (Book chapter). Technology, Kolkata; (3) Conference on Indian Association for Cancer Research, Kolkata.

Joyram Guin Associate Professor Asymmetric catalysis and development of new synthetic methodology Associates : (1) S Santra, SRF (CSIR), (2) S Pal, SRF (CSIR), (3) P Das, SRF (CSIR), (4) A Porey, SRF (CSIR), (5) P Biswas, JRF (CSIR), (6) T Ghosh, SRF (Institute), (7) S Panja, SRF (CSIR) and (8) M Bhakad, JRF (CSIR)

Development of novel and highly efficient methods for selective easy access to a broad range of synthetically valuable functionalization of unactivated C-H bond using molecular phenol derivatives without requiring toxic chemical oxidants. oxygen (O2)as a green oxidant are being currently investigated In addition, we have developed an efficient method for the in our group. Along this line and with regard to high medicinal catalytic highly stereoselective 1,6-addition reaction using importance of alkylated nitrogen heterocycles, we have recently chiral N-heterocyclic carbene (NHC) as Brønsted base developed an operationally simple and economical method for catalysts.08-2017. the preparation of such molecules employing readily available aldehydes as alkyl radical precursors and O2 as the sole oxidant (Scheme 1). In accordance to our current research interest, we have also developed a general strategy for Pd-catalyzed direct

C-H hydroxylation of arene using O2 as the sole oxidant and the oxygen atom source of the hydroxyl group. The method offers an

091 recently developed SPONSORED PROJECT advantages: O • Visible Light Induced ….. Transfer Photocatalysis - operational simplicity Alk H - minimum cost R' H benign N • Aldehyde C-H bond activation for the construction of - green oxidant O 2 conditions R' Alk C-C bond under green reaction protocols (DST, Green H2O N Chemistry). molecules with Alk significant medicinal importance 2 chemical R LECTURES DELIVERED oxidant unavoidable R' Alk Invited talk at (1) NIT Rourkela; (2) IISC, Bangalore. challenges: by-product N O formation H - operational safety O R' R1 - waste management R1 N - cost of the process Alk H R2 O traditional approach

Figure 1.: Aerobic radical alkylation of unactivated C-H bonds.

PUBLICATIONS IN JOURNALS 1.1,6-Conjugate addition of 1,3-dicarbonyl compounds to para-quinonemethides enabled bynoncovalent N-heterocyclic carbene catalysis -S Santra, A Porey and J Guin, Asian. J. Org. Chem.7, 477 (2018).[IF:2.788] 2.Radical C(sp3)-H alkenylation, alkynylation and allylation of ethers and amides enabled by photocatalysis - S Paul and J Guin, Green Chem., 19, 2530 (2017) [IF:9.125] 3.Synthesis of 3,3-dialkylated oxindoles via oxidative radical 1,2-alkylarylation of X,Y-unsaturated amides - P Biswas, S Paul and J Guin, Synlett. 28, 1244 (2017) [IF:2.323]

092

Department of PHYSICAL CHEMISTRY

Department Profile People Faculty : 04 Post-doctoral Research Associate : 05 Ph.D. Students : 23 Non-Academic Staff : 03 Extra Mural Funding Projects (ongoing) : 04 Research Achievements Satrajit Adhikari Ph.D. degree awarded : 01 Head of the Department Academic Activities Seminars organized : 08 Conference/Symposia/School organized : 07 Talks delivered by members of department in conferences/symposia of (National) : 05 Talks delivered by members of department in conferences/symposia of (International) : 02

094 , FASc, FNA Senior Professor and JC Bose Fellow (Superannuated on 31.01.2018) Nonlinear Dynamics and Statistical Mechanics Associates : (1) S Paul, JRF (UGC), (2) D Das, NPDF (DST) and (3) P Sarkar, RA (SERB-DST)

NONLINEAR DYNAMICS AND STATISTICAL MECHANICS : We have studied the reaction-diffusion systems under far from equilibrium condition to explore (i) role of fluctuating diffusivity. It has been shown that dichotomously fluctuating diffusivity leads to instability of the homogeneous stable state for an optimal range of correlation time of noise resulting in spatio-temporal chaos or phase separation depending on the details of nonlinearity. (ii) activator-inhibitor kinetics where the time evolution of concentration of a species at any spatial location depends on the relative average concentration of its neighbours. This self- regulating nature of kinetics brings in spatial correlation between the activator and inhibitor. An interplay of this correlation and disparity of diffusion coefficients leads to symmetry-breaking non-equilibrium transition resulting in pattern formation.

PUBLICATIONS IN JOURNALS 1. Reaction-diffusion systems with fluctuating diffusivities: spatio- temporal chaos and phase separation - S Paul, S Ghosh and D S Ray; J Stat Mech033205(2018).[IF:2.404] 2. Nonequilibrium transition and pattern formation in a linear reaction-diffusion system with self-regulated kinetics - S Paul, S Ghosh and D S Ray; Physical Review E97, 022213 (2018). [IF:8.462] Ph.D. DEGREE AWARDED : (1) Shyamolina Ghosh (CU) SPONSORED PROJECT : • JC Bose Fellowship (DST-SERB)

LECTURES DELIVERED : Invited talk at (1) Burdwan University; (2) Central University, Hyderabad; (3) IISER-Kolkata; (4) IIT Gauhati; (5) Serampur College; (6) Bose Institute Trust, RB College, Naihati; (7) IACS, Kolkata and (8) , (9) TIFR, Hyderabad

095 Tapas Chakraborty, FASc Senior Professor and Associate Dean LIF Spectroscopy of cold molecules and complexes, mass spectrometry and matrix isolation laser spectroscopy, gas phase photochemistry and atmospheric chemistry Associates : (1) P Banerjee, RA-I (Institute), (2) D P Mukhopadhyay, SRF (Institute), (3) A Chattopadhyay, SRF (Institute), (4) P Chatterjee, SRF (Inspire), (5) S Biswas, SRF (UGC), (6) I Bhattacharya, SRF (CSIR), (7) M Samanta, (UGC) and (8) K Mondal, SRF (UGC)

Laser-induced fluorescence and matrix isolation infrared spectroscopy investigations of weak and strongly bound hydrogen bonded complexes, and gas-phase radical reactions of atmospheric significances were the focus of the research for this period. We have developed a new apparatus for measuring the kinetics of radical reactions in the gas phase based on quantum cascade laser spectroscopy. The apparatus has been used to measure the kinetics of the atmospheric radical reaction between methyl peroxide (CH3••;|‚$•2), for the first time by probing directly the said radical. Vibrationally resolved LIF spectra of cold binary complexes of a phenol with two cyclic ethers have been investigated to demonstrate the | % {;;;• ! % !| conformational preferences of the complexes studied. The of p-fluorophenol with 2,5-dihydrofuran : A laser-induced results have also used to demonstrate that the vibrational fluorescence spectroscopy study -D P Mukhopadhyay, S relaxation of isomeric complexes could be markedly different. A Biswas, A Chattopadhyay and T Chakraborty, J. Phys. Chem. large number of weak hydrogen bonded binary complexes have A, 122, 3787 (2018).[IF: 2.94] been investigated using matrix isolation infrared spectroscopy for understanding factors responsible for the specific binding forces 4. Mid-infrared quantum cascade laser spectroscopy probing responsible for attaining specific molecular conformation. A of the kinetics of an atmospherically significant radical reaction new direction of research that we have initiated is the probing CH3O2+NO2+M CH3O2NO2+M, in the gas phase - A of the photochemistry of complex molecules in polar liquids by Chattopadhyay, M Samanta, K Mondal and T Chakraborty, J. ion-mobility mass spectrometry, where molecular separations are Chem. Sci., 130, 54(2018).[IF:1.17] done based on collisional cross-sections. The first molecule that SPONSORED PROJECT we have investigated is a dye used in organic LED. • Assessment of the level ……. Suggestive remedies (DST- PUBLICATIONS IN JOURNALS SERB) 1. Antagonistic interplay between an intermolecular CH...O LECTURES DELIVERED : and an intramolecular OH...O hydrogen bond in a 1:1 Invited talk at (1) Workshop of Indian Science Academies, complex between 1,2-cyclohexanedione and chloroform : A (2) Calcutta University, (3) Jadavpur University, (4) Belur Ram combined matrix isolation infrared and quantum chemistry study Krishna Mission, (5) NISER Bhubaneshwar. A K Samanta, P Banerjee, B Bandyopadhyay, P Pandey and T Chakraborty, J. Phys. Chem. A, 121, 6012 (2017).[IF:2.94] 2. Weak hydrogen bonds: insights from vibrational spectroscopic studies - P Banerjee, T Chakraborty, Int. Rev. Phys. Chem, 37, 83(2018).[IF:5.96] \{!{N###7 Interaction of an O–H•••O hydrogen-bonded binary complex

096 Satrajit Adhikari Senior Professor and Head Theoretical developments on beyond Born-Oppenheimer treatment; A Quantum-classical approach on the methodological development for Dynamics of multi- electronic multi-mode molecular systems; The effect of phonon modes and electron-hole pair on molecule- surface scattering processes; State-to-state reaction dynamics for triatomic systems; Molecular Scissoring by optimized laser pulse field; The Jahn-Teller effect on the phase transition of solids Associates : (1) S Ghosh, SRF (CSIR), (2) S Mandal, SRF (CSIR), (3) B Mukherjee, SRF (CSIR), (4) J Datta, JRF (Institute), (5) S Mukherjee, JRF (CSIR),(6) S Mukherjee, RA-I (Institute), (7) S Talukder (NPDF-DST), (6) S Mandal, SRF (Institute)

Adhikari and his group have pursued a first principle based The motivation to derive a Quantum-Classical approach from theoretical treatment for three or more than three (electronic) first principle is a contemporary research during the last three state molecular system and derived beyond BO equations both in decades in chemical physics to pursue the dynamics of multi - adiabatic and diabatic representations. This approach paved a mode multi – surface systems with best possible compromise way to adapt Molecular Symmetry (MS) in the ab initio calculated between accuracy and speed to calculate high resolution UV- non-adiabatic coupling terms before performing the adiabatic IR spectrum (photoelectron/MATI/PIRI) as well as scattering to diabatic transformation to construct diabatic Potential Energy cross sections for tri- /tetra- atomic reactive and molecule- Surfaces (PESs). The theory has been implemented to explore its surface scattering processes. Adhikari et al. have formulated workability and to investigate Jahn-Teller (JT) / Pseudo Jahn-Teller and demonstrated the numerical implementation of TDDVR

(PJT) as well as Renner-Teller (RT) effects on C2v(M) (NO2) system methodology on multi-mode multi-surface systems to calculate to reproduce the experimental photoelectron spectrum. Such a the high resolution UR-IR spectrum (photoelectron/MATI/PIRI) complete theory has already been applied in scattering processes: spectrum of various floppy molecules and depict excellent

D + H2, D+ + H2, F + H2etc to calculate reaction cross sections agreement with experimental and quantum mechanical under beyond BO situation and quite good agreement is found (MCTDH) ones, where the computational advantage of TDDVR with experimentally measured quantities. approach over different versions of MCTDH is clearly shown. Adhikari and coworkers formulated from first principle an effective Adhikari and his group have employed the parallelized TDDVR molecule - surface scattering Hamiltonian through a mean field approach to calculate the sticking probability and inelastic approach to account the effects of surface temperature, where scattering cross sections as a function of initial KE of the for the first time, the phonon modes quantitatively represent the incoming diatom. Finally, it is on the way to demonstrate the metal atoms and incorporate the surface temperature through ability of TDDVR methodology to calculate accurate reactive Bose - Einstein probability factor for their initial state distribution. and non-reactive transition probability/cross sections of Moreover, Adhikari et al. found the well-known experimental triatomic reaction with high computational efficiency for non- trend with the calculated temperature dependent sticking zero total angular momentum in the hyperspherical coordinate probability (chemisorption + physisorption) on the metal surface system. (Cu) as function of initial kinetic energy of the incoming diatom Controlling chemical events in a desired manner has been, and

(H2/D2). On the other hand, the effect of electron-hole pair is will always be a much sought after endeavor of any chemist, considered into the effective Hamiltonian through Fermi-Thomas be it an experimentalist or a theoretician. When light is used electron gas model, where the surface temperature is included by to control and to follow chemical transformations, a high using Fermi-Dirac probability factor for the distribution of surface degree of control can be achieved like dissociating a particular excitons. bond selectively in a polyatomic molecule. An interesting and

097 important problem is how to selectively cleave a particular bond in a molecule, leaving the rest of the molecule as it is, by using optimally designed laser pulse shapes. It is our purpose to investigate selective bond breaking in reduced dimensionality model of HOD and O16O16O18 molecule through lower quanta vibrational excitation using optimized field attributes. The optimization of the pulse fields has been performed by using a stochastic approach called simulated annealing (SA) and genetic algorithm (GA), where the profiles of IR and UV pulse field are optimized by maximizing the population of a targeted vibrational state and the flux in a desired mode, respectively. Cooperative lattice distortion (phase transition) as a consequence of orbital ordering phenomena in Jahn-Teller (JT) active system remains as an interesting developing field of research. Ab initio calculations reveal Jahn-Teller effect plays a crucial role along with super-exchange phenomena. Though for many decades ground state calculations are 1D cuts of the ADT angles of NO3 radical for Q3x- Q3y being performed extensively, but the investigations of excited state pairwise modes along coordinate for a particular value of p is still unexplored. A detailed formulation of a more realistic model (=5.0). 23 attains the magnitude of indicating only one JT CI Hamiltonian and its eigenspectrum has been explored to investigate between ‘2-3’ states and 45 reaches the value of 4 at the end the signature of cubic perturbed excited state on the phase transition of of a close contour representing four CIs (one JT CI and three accidental CIs) within ‘4-5’ states. 14 and 45 acquire the orthorhombic manganites. initial value at =00 after closing the contour at = 2 PUBLICATIONS IN JOURNALS : 1. Beyond born-oppenheimer treatment for the construction of triple- sheeted accurate diabatic Hamiltonian matrix of F+H2 system - B Mukherjee, S Mukherjee, K R Shamasudar and S Adhikari, J. Phys.: Conf. Ser. 833, 012004 (2017).[IF: ] AWARD / RECOGNITION : 2. An ab initio investigation of non-adiabatic couplings and conical • CRSI Bronze Medal, 2017 intersections among the lowest five electronic states of NO3 radical - B Mukherjee, S Mukherjee, S Sardar, K R Shamasundar and S Adhikari, LECTURES DELIVERED : Molecular Physics (invited article) 115, 2833 (2017).[IF:1.81] Invited talk at (1) IIT, Madras, (2) Symposium at IIT 3.“Beyond born-oppenheimer theory for ab initio constructed diabatic Bombay (2 lectures), (3) APCTCC 8), IIT Bombay, (4) potential energy surfaces of singlet H3+ to study reaction dynamics 22nd CRSI National Symposium, RavishankarShukla using coupled 3D time-dependent wave-packet approach - S Ghosh, University, Raipur, (5) Jerusalem Nonadiabatic 2018, S Mukherjee, B Mukherjee, S Mandal, R Sharma, P Chaudhury and S Jerusalem, Israel. Adhikari, Journal of Chemical Physics,147, 074105 (2017).[IF: 3.33] SPONSORED PROJECT : 4. Five electronic state beyond born-oppenheimer equations and their • Algorithmic Implementation ….. Scattering applications to nitrate and benzene radical cation - S Mukherjee, B Processes (DST-SERB) Mukherjee and S Adhikari; The Journal of Physical Chemistry A, 121, 6314 (2017).[IF:2.94] 5. 3D Time-Dependent wave-packet approach in hyperspherical coordinates for H+O2 reaction on the CHIPR potential energy surface - S Ghosh, R Sharma, S Adhikari and A J C Varandas, Physical Chemistry Chemical Physics, 20, 478 (2018).[IF:3.57] 6. Topological study of the H3++ molecular system: H3++ as a cornerstone for building molecules during the Big Bang”, B Mukherjee, D Mukhopadhyay, S Adhikari, M Baer, Molecular Physics, doi:10.1080 /00268976.2018.1442940 (invited article, 2018) [IF: 1.81]

098 Biman Jana Associate Professor Computational and theoretical biophysics research group :Protein folding, function and hydration: Theory Associates : (1) R Halder, SRF (CSIR), (2) M Dutta, SRF (Inspire), (3) S, Parui, SRF (CSIR), (4) R N Manna, (NPDF DST), (5) S Chakraborty, RA-1, (6) S Nandi*, SRF (CSIR), (7) C Ghosh*, SRF (CSIR), (8) P Pal, JRF (Inspire) and (9) N R Roy, JRF (Inspire) (*Co-Supervisor with Prof. K Bhattacharyya)

Research in our group mainly focuses in understanding basic physical principles behind biological processes using theoretical and computational techniques. We are exploring the mechanochemical aspects of molecular motor activities using structure based models of protein inspired by energy landscape theory. Also we are investigating role of active site residues on the ATP hydrolysis in different molecular motors using multi-scale QM/MM simulation. In addition we are also exploring explicit role of water within the active site of an enzyme on the catalysis using QM/MM methodology. Using molecular dynamics in full atomistic details, we are investigating the molecular origin behind unfolding of proteins and polymers in denaturant solution and different binary mixtures. We are also exploring the molecular origin of hydrophobic hydration and its role in cold denaturation of proteins. Using statistical mechanical approaches we are working to decipher the origin of slow and bound interfacial water around protein surface and its role on conformational dynamics of the protein. On a different perspective, we are also investigating the mechanism of ice growth inhibition by antifreeze proteins and proposed a novel hydration mediated ice recognition mechanism. 4. Exciton dynamics and formation mechanism of MEH- PPV polymer - based nanostructures - A Ghosh, B Jana, S PUBLICATIONS IN JOURNALS Chakraborty, S Maiti, B Jana, H N Ghosh and A Patra, The 1. Optimum number of anchored clathrate water and its Journal of Physical Chemistry C, 121 (38), 21062 (2017). instantaneous fluctuations dictate ice plane recognition [IF:4.80] specificities of insect antifreeze protein - S Chakraborty and B 5. Role of dispersive fluorous interaction in the solvation Jana, The Journal of Physical Chemistry B, DOI:10.1021/acs. dynamics of the perfluoro group containing molecules - S jpcb.8b00548 (2018).[IF:3.69] Mondal, S Chaterjee, R Halder, B Jana and P C Singh, The 2. Interaction of proteins with ionic liquid, alcohol and DMSO Journal of Physical Chemistry B, 121 (32), 7681 (2017).[IF: and in situ generation of gold nano-clusters in a cell - S Nandi, S 3.69] Parui, R Halder, B Jana and K Bhattacharyya, Biophysical Reviews 6. Pairwise hydrophobicity at low temperature : Appearance DOI:https://doi.org/10.1007/s12551-017-0331-1(2017).[IF:] of a stable second solvent separated minimum with possible 3. Molecular origin of the weak susceptibility of kinesin velocity implication in cold denaturation - S Parui and B Jana; The to loads and its relation to the collective behavior of kinesins - Q Journal of Physical Chemistry B, 121 (29), 7016 (2017). Wang, M R Diehl, B Jana, M S Cheung, A B Kolomeiskya and J N [IF:3.69] Onuchic, Proceedings of the National Academy of Sciences,114 7. Molecular insight into the adsorption of spruce budworm (41) E8611-E8617 (2017).[IF: ] antifreeze protein to ice surface : A clathrate mediated recognition mechanism - S Chakraborty and B Jana, Langmuir, 33 (28), 7202 (2017).[IF:4.18]

099 8. Modulation of the conformational dynamics of apoadenylate LECTURES DELIVERED : %|7``##˜™ Invited talk at (1) IABS-2018, IACS, Kolkata, (2) IACS-CESSD, Chakraborty and B Jana, J. Phys. Chem. B, 121, 5699 (2017). IACS, Kolkata. [IF:3.69] SPONSORED PROJECT 9. Size and structure of cytochrome C bound to gold nano- • Investigation of molecular ….. antifreeze proeins clusters : Effect of ethanol - C Ghosh, Md. A Amin, B Jana (DST-SERB) and K Bhattacharyya, Journal of Chemical Science, 129, 841 (2017).[IF:1.17] 10. Conformational and hydration properties modulate the ice recognition by type I antifreeze protein and its mutants - S Chakraborty and B Jana, Phyiscal Chemistry Chemical Physics, 19, 11678 (2017).[IF:3.57]

100

Polymer Science UNIT

Department Profile People Faculty : 05 Post-doctoral Research Associate : 05 Ph.D. Students : 25 Non-Academic Staff : 03 Extra Mural Funding Projects (ongoing) : 11 Research Achievements Suhrit Ghosh Ph.D. degree awarded : 03 Head of the Department Academic Activities Seminars organized : 01 Talks delivered by members of of department in conferences/symposia (National) : 06 Talks delivered by members of of department in conferences/symposia (International) : 11

102 Arun K Nandi, FASc Senior Professor Polymer Synthesis, Supramolecular Polymers, Polymer Nanocomposites and Polymers in Energy Associates : (1) A Shit, SRF (SERB project), (2) N Maiti, SRF, (CSIR), (3) N Maiti, SRF (CSIR), (4) S Mondal, SRF (CSIR), (5) P Chal, SRF (CSIR), (6) R K Ghosh, SRF (CSIR), (7) S Das, SRF (CSIR), (8) D Mondal, SRF (CSIR), (9) A Panja, JRF (Inspire) and (10) M Pakhira, JRF (CSIR - proj)

POLYMER SYNTHESIS: | œ| ™ Ampholyti cpolythiophene [polythiophene-g-poly {(N,N,N- constant measured for different nitroaromatics exhibit that it trimethylamino iodide)ethyl methacrylate-co-methacrylic senses picric acid (PA) best. The contact mode technique using acid}, APT] is synthesised by ATRP and a significant tuning of paper strips of OGR can detect PA in naked eye under UV optoelectronic properties of polythiophene (PT) chains due to light till 10-11 M concentration within 30 sec. Reusability of Hofmeister iodide (I-) ion is demonstrated at different pH. The the gel isachieved by treating OGR@PAxwithNaOH solution. co-operative effect of undissociated -COOH and quaternary ammonium groups immobilize I- near apolar PT chain causing The OGR gel is a reusable, low- threading of grafted chains and hence twisting of the backbone cost specific sensor for picric acid, attributing to the blue shift in absorption and emission spectra. in naked eye (till 10-11 M conc.), As medium pH is increased, dethreading of PT backbone occurs fluorescence and impedance due to ionization of –COOH group, releasing quencher iodide techniques. ions from the vicinity of PT chains resulting red shift in absorption and sharp hike in fluorescence intensity (390 times) for increase of excitons lifetime. With increase of pH, morphology changes from multivesicular aggregate with vacuoles to smaller size vesicles and finally to nanofibrillar network structure. Threading POLYMER NANOCOMPOSITES : and dethreading also affect the resistance, capacitance and A new route for the synthesis of low cost, flexible, high dielectric Warburg impedance values of APT. constant functional polymer nanocomposite is successfully

fabricatedby introducing molybdenum disulfide (MoS2) into SUPRAMOLECULAR POLYMERS : poly(vinylidene fluoride) (PVDF) using polyaniline (PANI) as A folic acid (F)-polyaniline (PANI) hybrid hydrogel (F-PANI), interlinker. The strategy adopted is to exfoliate MoS2 (E-MoS2) produced by in situ polymerization of aniline has 3D hierarchical by simple soniction of bulk MoS2 in N,N´- dimethyl formamide network morphology with BET surface area 236 m2/g. It exhibits (DMF) and in-situ polymerization of aniline with E-MoS2 in an extremely high adsorption capacity for Cr(VI) and during water to produce MoS2-PANI showing novel raspberry type adsorption Cr(VI) is reduced to Cr(III). The electrical impedance morphology. MoS2-PANI shows good dispersion in PVDF spectra of the Cr(VI) adsorbed xerogel, support the conversion matrix implying strong interaction onto the PVDF interface of PANI chains from ES to the pernigraniline base form making andthe nucleating effect of MoS2-PANI onto PVDF led to the the xerogel more resistive. It also selectively adsorbs anionic formation of dominant polar -phases in the MoS2-PANI / dyes, the adsorption capacity increases with decrease of pH. PVDF (MPF) composite films. With 10% filler content MPF Both the adsorption data are found to be well explained through material shows 86% polar -phase PVDF, a maximum increase pseudo-second-order kinetics and by Langmuir isotherm. The of dielectric constant to 586 at 102 Hz which is 42 times higher cyclic experiments show that, F-PANI xerogels can be effectively than that of neat PVDF. Also, we have studied the self-assembly reused to remove Cr(VI) from all types of contaminated water.A of GQDs grafted with poly(-caprolactone) (PCL) of different new triarylamine-cored-dendritic gelator (OGR) is synthesized degrees of polymerization 3, 7, 15 and 21 produced from ring producing thermoreversible, thixotropic and fluorescent gel in opening polymerization. Optical and morphological studies n-octanol. The lone pair electrons of nitrogen in OGR moiety makes unveil the transformation of the assemblies from J-aggregates it a donor and electron transfer occurs to acceptor nitroaromatics to H-aggregates, accompanied by alteration in morphology

103 from toroid to spheroid to rod like structures with increasing 4. Optoelectronic properties of self-assembled chain length of PCL. Functionalized GQDs with lower chain nanostructures of polymer functionalized polythiophene lengths of PCL at higher concentration also assembles into liquid and grapheme -N Maity, R Ghosh and A K Nandi, crystalline phases as observed from birefringent textures, which Langmuir, 34, 7585 (2018) (Editors Choice article).[IF:3.83] are later correlated to the formation of columnar hexagonal 5.A new facile synthesis of tungsten oxide from tungsten (Colh) mesophases. However, no such behavior is observed disulfide : Structure dependent supercapacitor and negative at higher chain lengths of PCL under identical conditions. differential resistance properties - D Mandal, P Routh and A K Nandi, Small,14, , 1702881 (2018).[IF:8.32] POLYMERS IN ENERGY : 6.Influence of chain length on the self-assembly of poly(- We have synthesized N, N’-di((S)-1-carboxylphenylalanine)- caprolactone) grafted graphene quantum dots –N Maity, P 3,4:9,10-perylenetetracarboxyldiimide (PPA) and have studied Chakraborty and A K Nandi, Langmuir, 44, 13384 (2017). its self-organization in different organic solvents. The current [IF: 3.83] voltage (I-V) property of the dried ensemble from chloroform exhibit negative differential resistance with rectification property 7.High dielectric poly(vinylidene fluoride) nanocomposite indicating co-existence of holes and electrons. On application films with MoS2 using polyaniline interlinke via of electric field the holes and electrons of the system become interfacial Interaction - N Maity, A Mandal and A K recombined generating electro luminescence, which peak Nandi, J. Mater. Chem. C,5, 12121, (2017).[IF:5.26] position and intensity vary with increasing applied voltage in 8.Influence of hofmeister I- on tuning optoelectronicproperties order to tune the band positions of hole transporting material of ampholyticpolythiophene by varying pH and conjugating (HTM) in the interfacially engineered perovskite solar cell with RNA –R Ghosh, D P Chatterjee, S Das, T K Mukhopadhyay, (PSC) random copolymers of poly(3-thiophene acetic acid) A Dattaand A K Nandi,Langmuir, 44, 12739 (2017).[IF:3.83] and poly(3-hexyl thiophene) (P3TAA-co-P3HT) of different 9.Folic acid-polyaniline hybrid hydrogel for adsorption/ compositions are produced by oxidative polymerization.. Here reduction of chromium (VI) and selective adsorption of ZnO nanoparticles are used as electron transporting material anionic dye from water - S Das, P Chakraborty, R Ghosh, S (ETM) and methyl ammonium lead iodide (MAPbI ) perovskite is 3 Paul, S Mondal, A Panja and A K Nandi, ACS Sustainable used as light absorbing material forming the device FTO/ZnO/ Chemistry & Engineering, 5, 9325 (2017).[IF:5.95] MAPbI3/copolymer/Ag where the power conversion efficiency (PCE) is found to be dependent on copolymer composition 10. Multi-functional poly(vinylidene fluoride) graft copolymers achieving a maximum (~10%) for 43 mol% P3TAA content in - A Kuila, D P Chatterjee, N Maity and A K Nandi, J. Polym. the copolymer. A facile new synthetic method of forming WO3 Sci. Part A, Polym. Chem Ed, 55, 2569 (2017). [IF:3.24] from commercial WS2 is reported.The charge storage ability of WO3 is extremely high (508 Fg-1 at current density of 1 Ag-1) at PUBLICATIONS IN BOOKS / BOOK CHAPTER / MONOGRAPHS : negative potential range compare to intermediate tungstite (WO3. (1) Encyclopedia of polymer science and technology – A K H2O; 194 Fg-1 at 1 Ag-1) and other similar reported systems. Moreover, high (97%) capacity retention after 1000 cycles and Nandi and S Manna, John Wiley & Sons Hoboken, NJ, USA, DOI:10.1002/0471440264.pst392.pub2, 2017. capacitive charge storage nature of WO3 electrode, suggest its supremacy to use as a negative electrode of supercapacitors. SPONSORED PROJECT : PUBLICATIONS IN JOURNALS 1. Optoelectronic Propertries of ……. Peptide Nanoconjugates 1. Optoelectronic properties of supramolecular aggregates of (DST-SERB). phenylalanine conjugated perylenebisimide - P Chal, A Shit 2. Improving Mechanical …………. Hybrid Supramolecular and A K Nandi, Chemistry Select, 3, 3993 (2018).[IF: 1.51] Gels (CSIR). 2. Candle soot derived carbon nanodot/polyaniline hybrid materials through controlled grafting of polyaniline LECTURES DELIVERED : chains for supercapacitors -T Ghosh, R Ghosh, U Basak, Invited talk at (1) ICEP-2018, Guwahati; (2) Presidency University, S Majumder, R Ball, DMandal, A K Nandi and D P Kolkata; (3) University of Burdwan; (4) iCMEMS-2017, Western Chatterjee, J. Mater. Chem. A, 6, 6476 (2018).[IF:8.87] Sydney University, Austrailia; (5) SCBDD-2017, Bose Institute, Kolkata 3. Triarylamine -Cored- Dendritic molecular gel for an efficient colorometric, fluorometric and impedometeric detection of picric acid - S Mondal, P Bairi, S Das and A K Nandi, Chem. Eur. J.,24, 5591 (2018).[IF:5.32]

104 Tarun Kumar Mandal Senior Professor Controlled polymerizations, Stimuli-responsive homo polymers/copolymers, Polymer-Peptide biohybrids, Polymer-inorganic hybrids, Ionic liquids/Poly(ionic liquid)s,Amino acid-based polymers, Polyzwitterions, 2D materials, Nanocatalysts, Stimuli-responsive ionic polymers. Associates : (1) M Dule, SRF (CSIR), (2) T Maji, SRF (CSIR), (3) S Jana, SRF (Institute), (4) Y Biswas, SRF (Institute), (5) A Bose, SRF (CSIR), (6) P Banerjee, JRF (Inspire) and (7) Md Anas, JRF (Inspire)

The major focus of our research is to design and develop The synthesis of new amino acid-based zwitterionic polymers stimuli-responsive homopolymers/block copolymers, functional via RAFT technique as well as study of their stimuli-responsive mesoporous polymers, peptide-polymer hybrids, amino acid- behaviors and antifouling properties are also an active area of based zwitterionic polymers, metal/metal oxide-polymer hybrids our research. using different macromolecular engineering tools such as ATRP, Poly(ionic liquid)-assisted synthesis of single or few-layers RAFT and ROP techniques. In particular, we are interested on the nanosheets of semiconducting 2D materials and inorganic solution self-assembly and directed-assembly of biohybrids, block nanoparticles are also the area where we are actively working copolymers and zwitterionic polymers into polymer nanostructures to produce polymer nanocomposites for catalysis and other of different morphologies and use of these materials for specific applications. applications. The development of pseudopeptidic poly(oxazoline)-based PUBLICATIONS IN JOURNALS stimuli-responsive block/graft copolymers and their self-assembly 1. Methionine-Based cationic polypeptide/polypeptide block into micelles/reverse micelles for potential applications are also copolymer with triple-stimuli responsiveness : DNA polyplexation an active area of our current research. and phototriggered release - S Jana, Y Biswas, and T K Mandal; Polym. Chem.9, 1869 (2018).[IF:4.93] 2. Structural variation in homopolymers bearing zwitterionic and ionic liquid pendants for achieving tunable multi-stimuli responsiveness and hierarchical nanoaggregates -Y Biswas and T K Mandal; Macromolecules, 50, 9807 (2017).[IF:5.9] 3. Redox-Active poly(ionic liquid)-engineered Ag nanoparticle- decorated ZnO nanoflower heterostructure : A reusable composite catalyst for photopolymerization into high-molecular- weight polymers -M Dule, M Biswas, Y Biswas and T K Mandal; Polymer, 133, 223 (2017).[IF:3.5]

Structural Variation in Homopolymers Bearing Zwitterionic and Ionic 4. Peptide-Poly(2-(dimethylamino)ethyl methacrylate) conjugates Liquid Pendants for Achieving Tunable Multi-Stimuli-Responsiveness and : Synthesis and aqueous/nonaqueous self-aggregation into Hierarchical Nanoaggregates nanostructures of dendritic and spherical morphologies -A Saha, S Jana, A Bose and T K Mandal. J. Polym. Sci.A Polym. Macromolecules, 50, 9807 (2017).[IF:5.9] Chem., 55, 3286 (2017).[IF:2.9] Our recent research also includes the design and synthesis of 5. A stimuli-responsive methionine-based zwitter iconic new responsive ionic liquids as well as poly(ionic liquid)s (PILs) methacryloyl sulfoniumsulfonate monomer and the and their applications in generating materials for sensing, energy corresponding antifouling polymer with tunable thermosensitivity storage and catalysis. Furthermore, the focus of our group’s -T Maji, S Banerjee, A Bose and T K Mandal; Polym. Chem. 8, research is the engineering of poly(ionic liquid)s’ molecular 3164 (2017).[IF:4.93] structures that leads to the formation smart materials of interesting stimuli-responsive behaviors.

105 PUBLICATIONS IN BOOKS / BOOK CHAPTER / Ph.D. DEGREE AWARDED : MONOGRAPHS : (1) Anupam Saha (JU); (2) Madhab Dule (JU) Responsive Polymer Nanostructures, Book Entitled : Polymer- Engineered nanostructures for advanced energy application – SPONSORED PROJECT : Y Biswas, S Jana, M Dule and T K Mandal, Springer, 173-304 • Design and Synthesis ….. applications (DST-SERB) (2017).

Suhrit Ghosh Professor and Head ™!7`! macromolecules, Amphiphilic polymers for drug delivery and other biological application

Associates : (1) Dr. P Rajdev, RA-III (TRC), (2) Dr. P Dey, NPDF, (3) Dr. G Ghosh RA-1, (4) Dr. J Sarkar, RA-1, (5) Dr. H Kar, RA-1, (6) A Sikder, SRF, (7) R Bej, SRF, (8) S Chakraborty, SRF, (9) A Mukherjee, JRF, (10) R Barman, JRF and (11) A Chakraborty, JRF (Inspire), (12) P Pramanik, SRF, (13) D S Pal, SRF.

We have been working in two broad areas: (i) H-bonding driven PUBLICATIONS IN JOURNALS !7`! 1. Pathway diversity leads to 2D-nanostructure in photo- (ii) Stimuli responsive amphiphilic polymers for drug delivery triggered supramolecular assembly - DS Pal and S Ghosh; application. In the recent past we have shown light triggered Chem. Eur. J., DOI: 10.1002/chem.201800888 (2018). controlled supramolecular polymerization of amide or carboxylic [IF:5.31] acid appended chromophoric building blocks. We have reported 2. Solvent switchable nanostructure and function of a solvent geometry regulated pathway diversity in supramolecular 7`‰ ` ‰ ™% ž ™% ™% ™ ™% ™ polymerization. We also have demonstrated the possibility of Ghosh; Nanoscale, 10, 3272 (2018).[IF:7.36] utilizing multiple H-bonding motifs of carboxylic acid as a tool 3. Controllable supramolecular polymerization via chain- to develop a strategy for living supramolecular polymerization growth mechanism - D S Pal, H Kar and S Ghosh; Chem. Comm.,54, 928 (2018).[IF:6.31] 4. Supramolecular chirality issues in unorthodox naphthalene diimidegelators - G Ghosh, M Paul, T Sakurai, W Matsuda, S Seki and S Ghosh; Chem. Eur. J., DOI: 10.1002/ chem.201704825 (2018).[IF:5.31] 5.Structural diversity in poly(disulfide)s - R Bej, J Sarkar and S Ghosh; Journal of Polymer Science, Part A: Polym. Chem.,56, 194 (2018).[IF:3.24] 6.Stimuli-responsive directional vesicular assembly with tunable though a chain growth mechanism which endows new surface functionality and impact on enzyme inhibition - A opportunities for structural precision in supramolecular polymers. Sikder, D Ray, V K Aswal and S Ghosh; Langmuir, 34, 868 Charge transport properties have been studied to understand the (2018).[IF:3.83] impact of the mesoscopic structure on the charge carrier mobility. 7.Cooperative supramolecular polymerization of a In the other area, we have explored poly(disulfide)-derived perylenediimide derivative and its impact on electron- biocompatible and bio-reducible amphiphilic polymers for intra- transporting property - D Basak, D S Pal, T Sakurai, S Yoneda, cellular drug delivery with specific emphasis on the impact of S Seki and S Ghosh; Phys. Chem. Chem. Phys.,19, 31024 morphology on cellular uptake and efficiency as a drug delivery (2017).[IF:4.12] (Hot paper) vehicle. 8. Solvent geometry regulated cooperative supramolecular polymerization - H Kar, G Ghosh and S. Ghosh; Chem. Eur. J.,23, 10536 (2017).[IF:5.31] Ÿ ™! | 7` ` #‹' ™ Chakraborty, M Schmutz, P Mesini and S Ghosh; Langmuir, 33, 4789 (2017).[IF:3.83] 106 PUBLICATIONS IN BOOKS / BOOK CHAPTER / SPONSORED PROJECT : MONOGRAPHS : • H-Bonding reinforced …… aqueous medium (CSIR) 1.Structural diversity in synthetic polypeptides by ring opening • Self Sorting ….. Acceptor assemblies (CEFIPRA) polymerization of n-carboxy anhydrides – D Basak and S Ghosh, • Bio-inspired ….. macromolecular assembly (DST) APP & CRC, 151-190, 2017. • Semiconducting nanotubes …. Transport studies (DST) 2.Supra-Amphiphilies based on charge transfer interactions – A • Polymer-Surfactant ….. Charge-Transfer Interaction Sikder and S Ghosh, Royal Society of Chemistry, 99-123, 2017. (Unilever Pvt. Ltd.)

LECTURES DELIVERED: Ph.D. DEGREE AWARDED : Invited talk at (1) SCBFM-2018, IISER-Kolkata; (2) Kyoto (1) Haridas Kar (JU) University, Japan; (3) FAPS MACRO-2017, Jeju, South Korea; (4) Free University, Berlin, Germany; (5) University of Essen, AWARD / RECOGNITION Germany; (6) University of Munster, Germany; (7) University Bronze Medal, CRSI of Freiburg, Germany; (8) University of Mainz, Germany; (9) University of Aachen, Germany; (10) Bogazici University, Turkey.

Sudip Malik Professor Electro-luminescent oligomers or polymers for PLED; Nanostructures of polymers for energy storage; Electro- chromic polymers and Supramolecular aggregates. Associates : (1) S Dhibar (NPDF, DST), (2) D C Santra, SRF (Institute), (3) K Bag (Part time), (4) K Samanta, SRF (Inspire), (5) A Roy, SRF (CSIR), (6) S Basak, SRF (Institute), (7) S Nad (Inspire), (8) P Das (Inspire), (9) D Majumder, JRF (Project) and (10) P Pal (Int. Project)

The research of my group was the design and synthesis of novel The electrochemical measurements demonstrated that the polymers, polymer-composites and self-assembling molecules copolymers could be used as potential candidates for OPV and subsequent investigation of their properties. The relationship applications which would be explored as our future plan for between the molecular structure and observed architectures at developing advanced organic opto and/or electric device. nano-dimension and material properties were explored.

ELECTRO-LUMINESCENT POLYMERS: Multicolor emissive organic solid fluorophores were developed using a novel molecular building block that was highly effective to reduce intermolecular interaction in condense phase. To have, (1Z,3Z)-1,4-diphenyl-1,3-butadiene unit was judiciously picked up as a central core by considering the advantage of partial twisted structure of (1Z,3Z)-1,4-dibromo-1,4-diaryl-buta- 1,3-diene unit that was introduced to develop a series small molecular derivatives and conjugated copolymer with fluorene as co-monomer for featuring solid state emission. Nanostructures of polymers for energy storage: Nanocomposite The emission color of the fluorophores was remarkably tuned consisted of rGO/Fe3O4/PANI (polyaniline) was developed by from blue to red by simply attaching different functional group soft-template based method and were characterized with the with the aryl group of the central core. Upon polymerization, help of UV-vis, IR, SEM, TEM, XPS, XRD, Raman etc. studies. length of the conjugation increased which reflected red shifted Subsequently, those composites were utilized to fabricate all- emission maxima of the copolymers. Notably, the copolymers solid-state, semi flexible and binder free supercapacitor device. were very good material property like film forming ability which The thin supercapacitor device exhibited excellent electrochemical was more advantageous as compared with small molecules. energy storage performance such as high specific capacity, high

107 energy density, high power density and excellent cycling stability PUBLICATIONS IN JOURNALS: (78% retention after 5000th cycle). The double layer capacitance 1.Co(II) Induced aggregation of chiral perylene derivatives and from rGO, pseudocapacitance from Fe3O4 nanoparticles and Mmacroscopically formation of supramolecular networks - P K PANI nanords jointly assisted to improve high performance Sukul and S Malik; Chem. Lett.,47, 576(2018).[IF:1.550] all-solid-state hybrid charge storage properties. Moreover for 2.Solid state emissive organic fluorophoreswith remarkable practical application, LED light illumination was demonstrate broad colortunabilitybased on aryl-substituted buta-1,3-diene using our design supercapacitor device based on synthesized as central core -M K Bera, C Chakraborty and S Malik; J. rGO/Fe3O4/PANI materials and its glow up-to 30 min. Thus, Mater. Chem. C, 5, 6872 (2017).[IF:5.256]. the nanorods had the potential to make significant flexible 3.Benzimidazole linked arylimide based covalent organic and portable supercapacitor in the energy storage technology. framework as gas adsorbing and electrode materials for supercapacitor application - A Roy, S Mondal, A Halder, A ELECTRO-CHROMIC POLYMERS: Banerjee, D Ghoshal, A Paul and S Malik; Euro. Polym. J., Triphenylamine unit containing two electroactive end-capped 93, 448 (2017).[IF:3.531] dendritic molecules Benz-3TPA and Benz-3CNTPA were designed and synthesized. Structures contained benzene moieties as part 4.Enhanced charge carrier mobility and tailored luminescence of the core. Both dendrons formed the polymers (p-Benz-3TPA of n-type organic semiconductor through block copolymer and p-Benz-3CNTPA) through the oxidative electrochemical supramolecular assembly - P Kumari, K Khawas, M K Bera, S polymerization and also were capable of showing simultaneous Hazra, S Malik and B K Kuila; Macromol. Chem. Phys. 218, operation in electrochromic (EC) and electrofluorochromic 1600508 (2017).[IF:2.50] (EFC) properties. Those two polymer films exhibited stable reversible multi- color electrochromic changes with high PUBLICATIONS IN BOOKS/BOOK CHAPTER/ coloration efficiency and contrast ratio upon electro-oxidation. MONOGRAPHS : Those electrochromic polymers were not only produced EC 1.Imparting functionality to clays by manipulating interlayer |$D¢£‘ˆ`¢ chemistry in “Clay Minerals : Properties, Occurrence and Uses, exhibited high contrast ratio (If/If0 = 179) EFC properties at Nova Science Publishers Inc., New York, 1-49 (Chapter-1) low working voltage and especially, both still showed excellent (2017). electro-switching stability even after hundreds of cycles. Solid 2.Conjugated polymers nanostructures : synthesis and state electrochromic devices (ECD) of both the polymers were applications in conjugated objects : Developments, synthesis fabricated and its color and fluorescent state were simultaneously and applications, Pan Stanford Publishing Pte. Lt, USA, 469- switched by an applied potential, making the polymer a unique 502 (Chapter-17) (2017). candidate for electrochemical fluorescence and electrochromic applications. LECTURES DELIVERED : SUPRAMOLECULAR AGGREGATIONS: Invited talk at (1) University of Cergy-Pontoise, Cergy, France; Metal directed supramolecular chiral network of perylenediimide (2) IISER-Kolkata. with high stretchability was reported upon mixing of aqueous solution of perylenediimide with cobalt salt. Self-healing property SPONSORED PROJECT of the hydrogel network was utilized for making healable • Development of Solid ….. Materials and their Application electrical fibers that were visualized as conducting wires in an (SERB-DST). electronic circuit for devices such as light emitting diodes (LEDs). • Development of Coin type ……. Electrode Materials (CSIR)

108 Anindita Das Faculty Fellow Self-assembly of stimuli-responsive abiotic helical polymers for chiral induction, molecular recognition, and catalysis, Covalent-supramolecular copolymer composites, Biodegradable polymers Associates : (1) A Rajak, JRF, (2) A Jamadar, JRF

Research interest in our group is focused on design, synthesis and self-assembly of various responsive functional polymeric systems by utilizing unconventional directional non-covalent binding motifs with various controlled polymerization techniques, with an aim to understand their structure-property relationship for potential relevance in nanoreactors, nanocarriers, shape memory systems and in opto-electronic studies. Specific interest lies in developing synthetic strategies for degradable thermoplastic elastomer (TPE) type composite materials by tethering covalent polymers with their complementary supramolecular analogues. Thermoplastic elastomers (TPEs) have received immense interest due to their widespread use in commodity plastics. In this context, degradable TPEs with advance properties are desirable, as they can address the issue of environment pollution associated with commonly employed non-biodegradable PUBLICATIONS IN JOURNALS block-copolymer based which we aim to develop in our group. (1) Consequences of dispersity on the self-assembly of ABA- In the other area, we wish to develop modular type amphiphilic block co-oligomers - A Das, K Petkau-Milroy, approaches for synthesis of abiotic helical- G Klerks, B van Genabeek, R P M Lafleur, A R A Palmans, and polymers and exploit those helical scaffolds for E W Meijer, ACS Macro Lett.,7, 546 (2018).[IF:6.19] molecular recognition, chiral luminescence and catalysis.

109

Raman centre for atomic molecular and optical sciences

Department Profile People Faculty : 01 Post-doctoral Research Associate : 01 Ph.D. Students : 49 Non-Academic Staff : 01 Extra Mural Funding Projects (ongoing) : 02 Research Achievements Bimalendu Deb Ph.D. degree awarded : 01 Chairman Academic Activities Seminars organized : 07 Conference/Symposia/School organized : 01 Talks delivered by members of department in conferences/symposia (National) : 21 Talks delivered by members of department in conferences/symposia (International) : 00

111 Ankan Paul Professor Associates : (1) S Bhunya, SRF (Institute), (2) G Ganguly, SRF (Institute), (3) B Ghosh, SRF (Inspire), (4) D Haldar, SRF (CSIR), (5) M Sultana, JRF (CSIR), (6) I Bhattacharyya, JRF (CSIR), (7) D Chakravarti, JRF (CSIR), (8) K Hazra, JRF (CSIR) and (9) S Mandal (NPDF)

Over the past few years we have been involved in investigating PUBLICATIONS IN JOURNALS chemical phenomena relevant to renewable energy economy. 1. Photochemical hydrogenation of CO2 to CH3OH and Our forays in studying photochemical reactions have unraveled pyridine to 1, 2-dihydropyridine using plasmon-facilitated that CO2 plausibly can be hydrogenated to CH3OH using chemisorbed hydrogen on Au Surface : Theoretical perspective plasmon triggered endoergonically hydrogenated Au(111) - G Ganguly, M Sultana and A Paul, The Journal of Physical surface without the use of a sacrificial base. Studies of plasmon Chemistry C, 121, 15326(2017).[IF:4.536] triggered H chemisorption of Au(111) surface revealed the 2 2. Designing an effective metal free Lewis acid catalyst for presence of a conical intersection along the reaction coordinate ammonia-borane dehydrogenation : A DFT investigation on through which the endergonic hydrogenation is facilitated. Our triarylboranes - S Bhunya, and A Paul, ChemCatChem, 9, computations predict that the surface chemisorbed hydrogen can 3870 (2017).[IF:4.803] be transferred to CO facilitating reduction at room temperature. 2 3. Lewis acid promoted hydrogenation of CO and HCOO– The findings are likely to provide crucial clues for finding routes 2 by amine boranes : Mechanistic insight from a computational which can develop new avenues for conversion of CO2 to fuel. Alternatively, in concert with our goals to explore and discover approach - L Roy, B Ghosh and A Paul, The Journal of Physical molecules which can be used for energy storage we have recently Chemistry A, 121, 5204 (2017).[IF:2.94] identified a new class of molecules based on the anthracene 4. Designing efficient solar-thermal fuels with [n. n](9, 10) motif which can serve as solar-thermal storage (MOST) material. anthracenecyclophanes: A theoretical perspective – G Ganguly, We had recently solar thermal storage properties of [n.n](9,10) M Sultana and A Paul, The Journal of Physical Chemistry bis-anthracenecyclophanes, using well calibrated theoretical Letters, 9, 328 (2018).[IF:9.353] (Invited for ACS LiveSlides methods. Contrary to the case of anthracenes, we found that Presentation) the [n.n]Bis-Anthracenecyclophane candidates containing longer 5. Theoretical investigations on the mechanistic aspects of linker alkyl chains (large value of `n’) can serve as highly effective O2 activation by a biomimetic Di-Nitrosyl Iron complex - A MOST systems with the highest gravimetric energy storage density Banerjee, S Sen and A Paul, Chemistry-A European Journal, (98.6 kcal/kg) reported till date. These findings are likely to pave 24, 3330 (2018).[IF:5.317] (Selected as Hot Paper) the path for realizing efficient solar-thermal storage materials. 6. Understanding the unexpected product distribution in the aerial oxidation of carbenestabilized diphosphorus complex - B Ghosh, A Banerjee and A Paul, Chemistry-A European Journal, 24, 4350 (2018).[IF:5.317] 7. Mono-and dinuclearoxidovanadium (V) complexes of an amine- bis (phenolate) ligand with bromo-peroxidase activities: synthesis, characterization, catalytic, kinetic and computational studies - M Debnath, M Dolai, K Pal, S Bhunya, A Paul, Hon Man Lee and Mahammad Ali, Dalton Transactions, 47, 2799 (2018).[IF:4.029] Ph.D. DEGREE AWARDED We are also involved in deciphering the mechanistic intricacies (1) Tanmay Malakar (CU) of spin-forbidden dioxygen activation by non-metallic species LECTURES DELIVERED and transition metal complexes. Recently, we have investigated the aerial oxidation mechanism of diphosphorous complex that Invited talk at (1) APCTCC 8, IIT Bombay, (2) Visva Bharati, Shantiniketan. explains the unexpecteddioxygen dissociated product formation. Moreover, we are in the process of building up understanding how As(III) interacts with ironhydroxide nanoparticles which is a key process for As(III) remediation from ground water. 112

Department of Solid State Physics

Department Profile People Faculty : 09 Post-doctoral Research Associate : 01 Ph.D. Students : 34 Non-Academic Staff : 05 Extra Mural Funding Projects (ongoing) :12

Research Achievements Indra Dasgupta Ph.D. degree awarded : 03 Head of the Department Academic Activities Seminars organized : 11 Conference/Symposia/School organized : 02 Talks delivered by members of department in conferences/symposia (National) : 33 Talks delivered by members of department in conferences/symposia (International) : 06

114 Amlan Jyoti Pal, FASc, FNAE, FNA, FNASc Senior Professor and J C Bose Fellow Organic electronics, Solar cells based on hybrid perovskites, inorganic semiconductors and quantum dots, and conjugated organics, Synthesis and characterization of nanomaterials and their application in optoelectronic devices, Characterization of single organic molecules and semiconducting quantum dots by UHV-STM, Scanning Tunneling Spectroscopy of 2D transition metal dichalogenides and their heterostructures, topological insulators, spintronics. Associates : (1) U Dasgupta, SRF (CSIR), (2) B Kundu, SRF (Institute), (3) S Chatterjee, SRF (Inspire), (4) H Bhunia, SRF (CSIR), (5) A Banerjee, JRF (Inspire), (6) G Paul (CSIR), (7) S Khatun (CSIR), (8) A Maiti (Institute)

CURRENT RECTIFICATION THROUGH VERTICAL HETEROJUNCTIONS BETWEEN TWO SINGLE-LAYER pn DICHALCOGENIDES (WSe2/MoS2 -JUNCTIONS):

We form junctions between two single layers of p-type WSe2 and n-type MoS2 in both sequences. The WSe2/MoS2 and MoS2/WSe2 junctions of ultimate thickness limit exhibit current rectification when characterized vertically with a scanning tunneling microscope (STM) tip. The direction of rectification in the pn-junction is opposite to that of the np-junction, confirming occurrence of the rectification to be due to the junctions themselves. From scanning tunneling spectroscopy (STS) and correspondingly the density of states (DOS), we locate the conduction and valence band edges (CB and VB, respectively) of the materials inferring their single-layer and 2H phase configuration. Band edges of the semiconductors form a type-II band alignment resulting in current rectification. In junctions of WSe2 and MoS2 with single The “loading time” that in turn also controlled morphology layers having a partial overlap, we map band edges along of the perovskite layer along with the antimony content in different points on individual semiconductors and the overlapped perovskite compounds was varied to optimize the solar cell region (junction). The results have provided experimental performances. The effect of dopant content has affected the evidence of current rectification through van der Waals vertical band diagram, which was drawn from density of states of heterojunctions between two single layers. the components as derived from their scanning tunneling spectroscopy. The solar cell parameters were then correlated

SEQUENTIALLY DEPOSITED ANTIMONY-DOPED CH3NH3PBI3 with the experimental band diagram of the heterojunctions. In

FILMS IN INVERTED PLANAR HETEROJUNCTION SOLAR CELLS Cu@NiO/CH3NH3Pb0.92Sb0.08I3¥ {¦˜‹ WITH A HIGH OPEN-CIRCUIT VOLTAGE : we have achieved a high open-circuit voltage of 1.13 V with an We introduce antimony-doped hybrid perovskite compounds energy conversion efficiency of 12.8%. The solar cell parameters in planar inverted solar cells. Here, we report in-depth and have been correlated with junction properties, which have been systematic studies on the formation of the perovskite layer studied through in-depth analysis of diode characteristics. through a modified two-step spin-coat method. In this method, the “loading time” of CH3NH3I on a “wet” PbI2 layer was varied in achieving a complete conversion to the perovskite material.

115 I V DIFFERENTIAL CONDUCTANCE (d /d ) IMAGING OF A 6. A solution approach to p-type Cu2FeSnS4 thin-films and HETEROJUNCTION-NANOROD : pn-junction solar cells : Role of electron selective materials Through scanning tunneling spectroscopy, we envisage imaging on their performance - S Chatterjee and A J Pal, Solar Energy a heterostructure, namely a junction formed in a single nanorod. Materials & Solar Cells,160, 233 (2017).[IF:5.018] While the differential conductance spectrum provides location 7. Hybrid heterojunctions between a 2D transition metal I V of conduction and valence band edges, d /d images record dichalcogenide and metal phthalocyanines: their energy levels I V energy levels of materials. Such d /d images at different voltages vis-à-vis current rectification - A Banerjee, B Kundu and A J Pal, allowed us to view p- and n-sections of heterojunction nanorods Phys. Chem. Chem. Phys.,19, 28450 (2017).[IF:4.123] and more importantly the depletion region in such a junction that 8. Differential conductance (dI/dV) imaging of a heterojunction- has a type-II band alignment. Viewing ofselective sections in a nanorod - B Kundu, A Bera, and A J Pal, Nanotechnology,28, heterojunction occurred due to band-bending in the junction and 095705 (2017).[IF:3.440] is correlated to the density of states spectrum of the individual semiconductors. The dI/dV images recorded at different voltages 9. Simultaneous observation of surface- and edge-states could be used to generate a band diagram of a pn junction. of a 2D topological insulator through scanning tunneling spectroscopy and differential conductance imaging - H Bhunia, A Bar, A Bera, and A J Pal, Phys. Chem. Chem. Phys.,19, 9872 (2017) [IF:4.123] 10. Scanning tunneling spectroscopy to probe site-selection in

heterovalent doping: Zn(II)-doped Cu(I)In(III)S2 as a case study - B Kundu and A J Pal, J. Appl. Phys.,122, 065109 (2017). [IF:2.176]

11. Promoting morphology with a favorable density of states using diiodooctane to improve organic photovoltaic device efficiency and charge carrier lifetimes -L E Garner,A Bera,B W Larson,D P Ostrowski, A J Pal, and W A Braunecker, ACS Energy Lett., 2, 1556 (2017).[IF: 12.277]

PUBLICATIONS IN BOOKS / BOOK CHAPTER/ MONOGRAPHS PUBLICATIONS IN JOURNALS (1) Solar Cells : Materials Beyond Silicon – S Chatterjee, U 1. Band-Diagram of heterojunction solar cells through scanning Dasgupta, A J Pal in K V Raghavan, P Ghosh (Eds.) Energy tunneling spectroscopy - U Dasgupta, A Bera, and A J Pal, ACS Engineering. Springer Singapore, p. 73-85 (2017). Energy Letters,2, 582 (2017).[IF:12.277] 2. Current rectification through vertical heterojunctions between SPONSORED PROJECT two single-layer dichalcogenides (WSe2|MoS2pn-Junctions) - H • J C Bose Fellowship (DST) Bhunia, A Bera, and A J Pal, ACS Appl. Mater. Interfaces, 9, • SERIIUS Project 8248 (2017).[IF:8.097] 3. Introducing immobilized metal phthalocyanines as spin- LECTURES DELIVERED injection and detection layers in organic spin-valves: Spin- Invited talk at (1) ICAFM-2017, Anna University, Guindy, tunneling and spin-transport regimes - A Banerjee, B Kundu, and Chennai, (2) NIAS, Bangalore, (3) Workshop on Recent A J Pal, Organic Electronics, 41, 173 (2017).[IF:3.680] Advances in Physics, St. Xaviers College, Kolkata, (4) ISSMD4, Jadavpur University, (5) Visitor’s Programme, Delhi University, 4. Sequentially deposited antimony-doped CH3NH3PbI3 films in (6) IISER-Kolkata, (7) ICME, IIT-Kanpur, (8) ICMAT-2007, inverted planar heterojunction solar cells with a high open-circuit Singapore, (9) Bose Institute, Kolkata, (10) DST Nanoschool, voltage -S Chatterjee, U Dasgupta, and A J Pal, J. Phys. Chem. CeNS, Bangalore, (11) JNCASR, Bangalore, (12) Indo- C, 121, 20177(2017).[IF:4.536] US bilateral workshop at PSG Institute of Advanced Studies, 5. Thin-film formation of 2D MoS2 and its application as a hole- Coimbatore. transport layer in planar perovskite solar cells - U Dasgupta, S Chatterjee, and A J Pal, Solar Energy Materials & Solar Cells,172, LECTURES DELIVERED BY FELLOWS 353 (2017).[IF:5.018] 1. S. Chatterjee : 9th Hope meeting with Nobel Laureates, tokyo; Scottish Church College; City College, Kolkata 2. H. Bhunia : IACS, Kolkata.

116 Indra Dasgupta Senior Professor, Head and Associate Dean Electronic structure calculations of novel magnetic systems, strongly correlated systems, low-dimensional quantum spin systems, magnetic properties of materials at nano scale and disordered systems Associates : (1) S Bhowal, SRF (CSIR) (resigned on September 2017); (2) A Paul, SRF (CSIR); (3) A Chakraborty JRF; (4) S Bandyopadhyay, SRF (Inspire)

having type-II band alignment providing a natural avenue for Research in our group in the past year was devoted to the charge separation ideal for application in photovoltaic devices. calculation of electronic structure of strongly correlated systems In such a system one can engineer band-offsets by changing in the presence of spin-orbit coupling, multiferroics and nano- size of one of the components leading to wavelength tunability systems. in a wider range in comparison to single component quantum Spin-orbit coupling (SOC) is found to be crucial for dots. The possibility of charge transfer available in type-II understanding the magnetic and electronic properties of 5d variant of coupled quantum dots also have important impact transition metal oxides. We have investigated the effect of spin- in its transport characteristics. We have performed electronic orbit coupling (SOC) and strong covalency on the magnetism structure and transport calculations on CdS and ZnSe coupled of double-perovskiteiridates (Sr MIrO , M=Ca, Mg) where 2 6 quantum dots and have shown that such coupled quantum Ir is in d3 configuration using first principles as well as model dots not only have type II interface but also display rectification Hamiltonian calculations. Our calculation shows that strong Ir-d characteristics with sizable rectification ratios. and O-p covalency in these double-perovskiteiridates results in the deviation from the expected 6+ charge state of Ir, leading to an unquenched orbital moment in the presence of SOC. PUBLICATIONS IN JOURNALS We have studied in details the nature of magnetism and our 1. Covalency and spin-orbit coupling driven magnetism in the calculations of isotropic exchange interactions for these double- double-perovskiteiridates Sr2MIrO6 (M=Ca,Mg) - S Bhowal perovskiteiridates suggest the systems to be frustrated. We argue and I Dasgupta, Phys. Rev B, 97, 024406 (2018)[IF:3.836] that the SOC driven easy plane anisotropy possibly promotes 2. Ba MIr O hexagonal perovskites in the light of spin-orbit long range magnetic order suggested for these systems indicating 3 2 9 the importance of SOC in both these systems. Further, our coupling and local structural distortions - A Nag, S Bhowal, F model calculation considering ideal d3 electronic configuration Bert, A D Hillier, M Itoh, I Carlomagno, C Meneghini, T Sarkar, for Ir emphasizes the role of SOC, noncubic crystal field and R Mathieu, I Dasgupta, and S Ray, Phys. Rev. B, 97, 064408 Ir-Ir hopping in the reduction of the spin moment. In another (2018).[IF:3.836] project, we have studied systems with Ir5+ ions, where ideally a nonmagnetic J=0 ground state is expected to be stabilized in the 3. Development of half metallicity within mixed magnetic phase presence of strong SOC, however often spontaneous moments {‚{‚˜™!`‰¦!!!™¨|‰ are generated due to hopping induced superexchange. This Paul, C Meneghini, S Bandyopadhyay, I Dasgupta and S Ray, effect become more pronounced when the Ir atoms are close Journal of Physics: Condensed Matter, 30 (20), 205802 (2018) by, as in systems with Ir O dimers in 6H based Ba MIr O 2 9 3 2 9 [IF:2.649] compounds where magnetism is an outcome of complex Ir-O- Ir exchange paths, and is strongly influenced by the presence of local distortions. Using first principles electronic structure Ph.D. DEGREE AWARDED calculations we have not only explained the origin of moments in (1) Arup Chakraborty (CU) such d4 systems but also explained the nature of ground state for the series of compounds Ba MIr O (M=Mg, Sr and Ca). 3 2 9 SPONSORED PROJECT In addition, we have investigated the electronic structure, • Electronic ….. Nanomaterials (Indo-German, DST-DAAD) magnetism and ferroelectric polarization in the triangular lattice • Theoretical Stuy of Spin-Orbit …… Correlated Systems antiferromagnet AgFeO2. Our calculations reveal that spin orbit interaction plays an important role in determining the magnetic LECTURES DELIVERED property of AgFeO2 and is possibly responsible for its different magnetic ground state. Calculations of ferroelectric polarization Invited talk at (1) IACS Summer School at IACS, Kolkata, (2) of AgFeO2 suggest that the spontaneous polarization arises from 9th Int. Conference on Materials for Advanced Technologies, noncollinear spin arrangement via spin-orbit coupling. Singapore, (3) ICFNN, Kathmandu, (4) 652 Heraeus Seminar Semiconductor heterostructures at nano-scale offer unique at Bad Honnef Germany, (5) Osaka University, (6) 9th APCTP device possibilities due to quantum confinement and band-offset Workshop at Tokyo, (7) NIST Behrampur, (8) Visva-Bharati, engineering. Of particular interest, are coupled quantum dots Santiniketan, (9) Seoul National University. 117 Saurav Giri Senior Professor Magnetic functionalities (exchange bias effect, magnetocaloric effect, magnetoresistance/ magnetodielectric response), Multiferroics Associates : (1) S Goswami (CSIR, Pool Officer); (2) A Chatterji, SRF (UGC); (3) J K Dey, SRF (Inspire); (4) P Ghose, JRF and (5) T Dalui, JRF.

Chemical-pressure-driven orthorhombic distortion and The correlation of the multiferroic order and ferroelectric polarization enhancement of ferroelectric polarization in with the orthorhombic structural distortion is established for Ca La BaCo O $‚0„„ˆ‰!! Ca La BaCo O (CLBCO) x x 4 7 ‚ x 4 7 studies reveal that La doping increases considerable structural distortion, which is associated with the increase of multiferroic ordering temperature and electric polarization. Intriguingly, the '}%!C\ˆ3{¥$‚ £„„ˆCˆ„3{¥$‚£„\%¥| Synchrotron diffraction studies in magnetic field provides an important clue, where structural distortion provides more impact on the polarization value than the contribution from the change

in unit cell volume. Geometric magnetic frustration holds the key for the occurrence of the structural distortions, around which multiferroic ordering takes place for CaBaCo4O7. Our work thus highlights crystal structural distortion as a rich playground (a) Electric polarization (P) with T at different poling field; (b) Local for tuning multiferroic order as well as polarization value. structural distortions in Co atoms causing ferroelectricity PUBLICATIONS IN JOURNALS 1. Chemical-pressure-driven orthorhombic distortion and

significant enhancement of ferroelectric polarization in

Ca ‚LaxBaCo4O7 $‚0 „„ˆ ` ¨ Š! ‰ ‰ {‹ S Majumdar, U Rütt, O Gutowski, M V Zimmermann, and S Giri, Physical Review B, 96, 184428 (2017).[IF:3.836] 2. Multiferroicity around Verwey transition in Fe3O4 thin films - S Mishra, K Dey, U Chowdhury, D Bhattacharya, C K Ghosh, and S Giri, AIP Advances, 7, 125015 (2017).[IF:1.568]

Physical Review B, 96, 184428 (2017) 3. Critical behavior of multiferroicsulpho spinel compounds: MCr2S4 (M= Co & Fe) - K Dey, AIndra, and S Giri, J Alloys and Compounds,726 (2017) 74 [IF: 3.133] 4. Critical behavior and reversible magnetocaloric effect SPONSORED PROJECT in multiferroic MnCr2O4 -K Dey, A Indra, S Majumdar, • Magneto … Refrigeration (DST-SERB) and S Giri, J Magnetism and Magnetic Materials, 15435 (2017).[IF:2.630] LECTURES DELIVERED 5. Chemical disorder driven reentrant spin cluster glass Invited talk at (1) NSC-45, IIT, BHU, (2) ISAMMA-2017, state formation and associated magnetocaloric properties of PhuQuoc, Vietnam. Nd2Ni0.94Si2.94 -S Pakhira, C Mazumdar, R Ranganathan and S Giri, Physical Chemistry Chemical Physics,20 (2018) 7082.[IF:4.123]

118 Durga Basak Senior Professor Optical and optoelectronic properties of II-VI semiconducting thin films and nanostructures Associates : (1) A Mallick, SRF, (2) D Sett, SRF; (CSIR), (3) S Mondal, SRF (Inspire), (4) S Ghosh, SRF (CSIR), (5) A Das Mahapatra, JRF (6) A Das, JRF (CSIR).

In order to understand the role of a dominant point defect,

Zn vacancy (VZn) in ZnOnanorods (NRs), which is prevalent on the surface of the NRs, we employ a high-temperature annealing step in air and also an excess hydration step for one set of annealed NRs, each followed by a final surface passivation step by polyvinyl butyral. A comprehensive study on the photocurrent spectra, photocurrent transients under different sub-band gap excitations, and power dependence of photocurrent of aqueous chemically grown ZnO NRs treated under various conditions has been carried out and PUBLICATIONS IN JOURNALS demonstrates the superiority (extraordinarily high and fast UV 1. Self-powered highly enhanced broad wavelength (UV response) of the point defect rich but surface-passivated NRs to visible) photoresponse of ZnO@ ZnO S @ZnS core- as compared to ones with no or fewer VZn defects. We report 1-x x a comparative mechanistic study on cation-cation (Al-Sn) and shell heterostructures - S Sarkar, A D Mahapatra, D Basak, cation-anion (Al-F) co-doped nanocrystallineZnO thin films J. Colloid and Interface Science, 523, 245 (2018).[IF:4.23] grown on glass substrate by RF sputtering technique. Through 2. Revisiting the electrical and optical transmission properties detailed analyses of crystal structure, surface morphology, of co-doped ZnO thin films as n-type TCOs - A Mallick, D microstructure, UV-VIS-NIR transmission-reflection and Basak, Progress in Materials Science, 96, 86 (2018).[IF:31.14] electrical transport property, the inherent characteristics of the 3. Very high photoresponse towards low-powered UV light under co-doped films were revealed and compared. Al-Sn (ATZO) low-biased condition by nanocrystal assembled TiO film - S Mondal, co-doped film show no enhanced carrier concentration 2 D Basak, Applied Surface Science, 427, 814 (2018).[IF:3.39] consistent with the probable formation of SnO2 clusters supported by the XPS study. Most interestingly, it has been 4. Toward understanding the Role of VZn defect on the found that Al-F (AFZO) co-doped film shows three times photoconductivity of surface-passivated ZnO NRs - D Sett, D Basak, enhanced carrier concentration as compared to Al doped The Journal of Physical Chemistry C, 121 24495 (2017).[IF:4.54] and Al-Sn co-doped films attaining a value of ~9 × 1020 5. High-Performance flexible perovskite solar cells on ultrathin \' glass : Implications of the TCO - B Dou, E M Miller, J A Christians, The carrier relaxation time increases in AFZO while it E M Sanehira, T R Klein, F S Barnes, Sean E. Shaheen, Sean M. decreases significantly for ATZO film consistent with the Garner, S Ghosh, A Mallick, D Basak, Maikel F. A. M. van Hest, concurrence of the impurity scattering in the latter. Also, we The Journal of Physical Chemistry Letters, 8, 4960 (2017).[IF:9.53] have gained an in-depth knowledge on defect formation in phase pure Cl doped ZnO films through comprehensive 6. Effects of surface capping with Poly-vinyl butyral (PVB) on the studies on their PL properties supported by the electrical ultraviolet photosensing properties of ZnO nanorods - D Sett, D and XPS results. We demonstrate an uncharacteristic Basak, AIP Conference Proceedings,1832 (1) 050033 (2017) enhancement in the ultraviolet (UV)/visible (VIS) peak intensity ratio from 2.7 to 9.5 with an increase in the doping content PATENT FILED from 0–10 at% Cl, signifying a large change in the defect A method for manufacturing visible transparent conducting chemistry. Also an atypical change in the green (GE) and materials - D Basak, Oct. 2017 orange emission (OE) with a gradual decrease in the GE/ OE intensity ratio as Cl dopant increases has been observed which is not reported earlier.

119 AWARD / RECOGNITION SPONSORED PROJECT MRSI Medal • Development ….. Oxide Film (DST-SERB) • SERIIUS Project LECTURES DELIVERED Invited talk at (1) Symposium on AGM, Trichy, (2) NIT, LECTURES DELIVERED BY FELLOWS Agartala, (3) Cranfield University, UK. 1) A Mallick : Cranefield Univ, UK.

Subham Majumdar Senior Professor Magnetic and electrical properties of solids Associates : (1) A Banerjee, SRF (Inspire), (2) M Das, JRF (CSIR), (3) S Chatterjee, JRF (UGC), (4) S Mondal (Institute), (5) S Karmakar (part time). Collaborators: (1) S Giri (Institute); (2) I Dasgupta (Institute); (3) S Ray (Institute); (4) L Mañosa (Barcelona); (6) D T Adroja (Oxford)

Our group is involved in the investigation of magnetic and are found to violate the Mott-Ioffe-Regel condition for electric properties of bulk solid materials which include transition minimum electrical conductivity and show a distinct signature metal based alloys as well as oxides. We experimentally probe of non-Fermi liquid behavior at low temperature. The MIT in the materials through magnetization, electrical transport, the doped compounds does not correlate with the magnetic calorimetry, and dielectric measurements. We are also transition point, and Anderson-Mott-type disorder-induced studying magnetic properties by neutron scattering experiments localization may be attributed to the ground-state insulating using the facilities available abroad. Few important research phase. The observed non-Fermi liquid behavior can be works during 2017-18 can be summarized as follows. understood on the basis of disorder-induced distribution of the spin-orbit-coupling parameter, which is We performed a detailed investigation of the ground-state markedly different in the case of Ir4+ and Ir5+ ions. magnetic properties of newly synthesized Mn10FeGe8 alloy. The sample can be thought of being derived by substituting one Mn atom by Fe of the parent compound Mn11Ge8. Fe- PUBLICATIONS IN JOURNALS 1.Glassy magnetic ground state and Kondo-like behaviour in substitution leads to a drastic change in the magnetic ground Mn10FeGe8 - S Pramanick - P Dutta, S Majumdar and S state as well as to the magneto-transport properties of the Chatterjee, J. Phys.: Condens. Matter,29 , 495802 (2017). parent alloy. On cooling below 250 K, Mn FeGe undergoes a 10 8 [IF:2.209] transition from paramagnetic phase to a state having significant ferromagnetic correlations. The ground state is found to be 2.Observation of non-Fermi liquid behavior in hole- canonical spin glass (CSG) type in nature as evident from the dc doped Eu2Ir2O7- A Banerjee, J. Sannigrahi, S Giri, and magnetization and ac susceptibility measurements. Interestingly, S Majumdar, Phys. Rev. B, 95, 075110 (2017).[IF:3.836] the resistivity data shows an upturn at low temperature below SPONSORED PROJECT about 30K, mimicking Kondo-like behaviour. Mn10FeGe8 turns out to be a rare example among 3d transition metal • Engineering novel electronic …….. generation devices alloys, where a Kondo-like state coexists within a CSG phase. (DST-SERB)

The Weylsemimetallic compound Eu2Ir2O7 and its hole-doped derivatives (which are achieved by substituting trivalent Eu LECTURES DELIVERED Invited talk at (1) IIT, Bombay by divalent Sr) are investigated through transport, magnetic, and calorimetric studies. The metal-insulator transition (MIT) temperature is found to get substantially reduced with hole doping, and for 10% Sr doping the composition is metallic down to temperature as low as 5 K. These doped compositions 120 Raja Paul Associate Professor Soft-matter biophysics & statistical mechanics Associates : (1) S Basu, SRF(Institute), (2) S Chatterjee, SRF (CSIR), (3) S Som, JRF (Inspire), (4) S Chatterjee, JRF, (UGC), (5) A Sarkar, JRF, (UGC).

Over the last few years, including 2016 - 17, Paul-lab has been studying physics of living and nonliving systems. Developing mathematical and computational models to understand various sub-cellular and tissue level phenomena have been the primary focus of biophysical research carried out by the group. Projects undertaken aimed to develop theoretical models of tissue morphogenesis, chromosomal segregation in mitotic cells under various constraints, dynamic positioning of mitotic organizing center and spindle apparatus etc. in yeast and mammalian cells. Model predicted data were compared with experiments carried out by collaborators. Further, the group has developed computational framework to study properties of classical spin systems predicting domain coarsening of disordered random magnets with vector order parameters, aging of binary mixture inside nanopores.

PUBLICATIONS IN JOURNALS 1.Ordering kinetics in the random-bond XY Centrosome positioning in Eukaryotic cell. Top panel shows a simplified mechanistic model indicating various molecular forces model - M Kumar, S Chatterjee, R Paul and S applied on the centrosome during interphase and mitosis. Bottom Puri, Phys Rev E,96, 042127 (2017). [IF:2.366] panel shows quantification of the forces (indicated by arrows in the top panel), distance of the centrosome with respect to the nucleus Ph.D. DEGREE AWARDED and estimation of time to position the centrosome. (1) Saikat Basu (CU)

SPONSORED PROJECT • Study off cell-cell ….. viscoelasticity (DBT, with D Sinha) • Characterizing phase transition ………. Vector order parameter

LECTURES DELIVERED Invited talk at (1) JC Bose Trust, AcharyaBhaban, Kolkata, (2) ICTS, Bangalore, (3) TIFR and IIT, Bombay, (4) Bose Institute, Kolkata, (5) IABS-2018, IACS, Kolkata, (6) Jadavpur University, Kolkata

121 Mintu Mondal Assistant Professor Experimental Condensed Matter Physics.

Associates : (1) A Bera, JRF, (2) S Bera, JRF

Topological insulators are a class of materials that exhibit topologically protected conductingsurface states with Dirac- like dispersion. They have been shown to exhibit a variety of interesting phenomena including a quantized magnetoelectric response and novel spintronics effects due to spin textures on their surfaces. However, these phenomena are very difficult to observe in real materials due to the finite bulk carrier density which may overwhelm the the intrinsic topological responses that is expressed at the surface. Here, we have used a novel ionic liquid gel gating technique to tune the chemical potential of Bi2Se3 thin lms while simultaneously performing THz spectroscopy. With Figure 2 (a) Real part of Faraday rotation F) at high magnetic eld, applied bias voltage, we can tune the carrier concentration by B> 5.5T. The grey lines are theoretically predicted values assuming an order of magnitude and shift theFermi energy, EF to as low particular filling factors of the surface states. (b) Average value of Re as~ 10meV above the Dirac point. At high bias voltage and [ F] over frequency range spanning from 0.2 to 0.8 THz at 6.5 T at different values of the bias voltage (V ). magnetic field, we observe a quantized Faraday angle consistent Bias with the topological magnetoelectric effect that can be tuned by ionic liquid gating through a number of plateau states.

Figure 1 Real and imaginary part of conductance (G = G1 + i G2) of

the 8 QL Bi2Se3 with MoO3 capping layer measured at 5K and zero bias voltage. Solid lines are the fits to the Drude model.

122 Devajyoti Mukherjee Assistant Professor Experimental Condensed Matter Physics & Device Physics Specific Research Interests: Quantum materials for applications, Magentism and spintronics, Multiferroics& Ferroelectrics, Epitaxial growth of thin films/heterostructures Device physics of multifunctional materials, Interface and Surface science

Associates : (1) A Barman, JRF (TRC), (2) S Chatterjee, JRF, (3) A Nag (Int. Ph.D.)

Our research focuses on exploring the cross-coupling of ferroic PUBLICATIONS IN JOURNALS order parameters in functional integrated materials in the form 1. Role of the magnetic anisotropy in organic spin valves - V of thin films and heterostructures. We emphasize on the growth Kalappattil, R Geng, SH Liang, D Mukherjee, J Devkota, A Roy, and characterization of epitaxial thin films and heterostructures MH Luong, ND Lai, LA Hornak, TD Nguyen, WB Zhao, XG Li, using physical techniques such as pulsed laser deposition (PLD) NH Duc, R Das, S Chandra, H Srikanth, MH Phan, Journal of and sputtering. We mainly investigate complex oxide materials Science: Advanced Materials and Devices, 2, 378 (2017).[IF:] that display strong thermal, structural, magnetic and electrical 2. Enhanced ferroelectric polarization in epitaxial (Pb Lax) properties. These materials may include multiferroics and 1-x (Zr Ti )O thin films due to low La doping - D Mukherjee, M multicalorics that promise both novel scientific phenomena 0.52 0.48 3 Hordagoda, D Pesquera, D Ghosh, J L Jones, P Mukherjee and S and useful technological applications. In 2017-2018, we Witanachchi, Physical Review B,95, 174304 (2017). [IF:3.836] reported on enhanced magnetocaloric effect (MCE) in ultrathin epitaxial heterostructures of CoFe O4/La Sr MnO (CFO/ 2 0.7 0.3 3 PUBLICATIONS IN BOOKS/BOOK CHPTER/ LSMO) near the Verwey transition of CFO. The enhanced MONOGRAPHS MCE was due to enhanced magnetisation in CFO/LSMO due (1) Scalable Fabrication and Enhanced Properties of Ferroelectric to the strain coupling of the underlying LSMO layer with the and Piezoelectric Perovskite Oxide Nanostructured Films for magneto-strictive CFO layer. Further due to the second order Harnessing and Harvesting Energies” by A. Datta, D. Mukherjee like structural phase transition of CFO (Verwey transition) we and S. K. Narayan in Metal Oxide based Thin Film Structures: observed giant relative cooling power (RCP) which is higher Formation, Characterization and Application of Interface than those reported in similar system. We have also studied based Phenomena, Elsevier, ISBN : 9780128111666 (2017). the enhanced ferroelectric effects in Ca, Zr co-doped BaTiO3 epitacial thin films grown using pulsed laser deposition. LECTURES DELIVERED Invited talk at (1) ISEPD-2018, Jaipur, (2) 9th IACS APCTP Joint Activity at Kolkata.

123 Subhadeep Datta Faculty Fellow Experimental Condensed Matter Physics Associates : (1) A Ghosh, JRF, (2) S Maity, JRF, (3) C Patra (Int. Ph.d), (4) A Das (internship)

Fabrication and characterization of hybrid van der Waals will be utilized. By this, we can have high mobilities of heterostructure. We pay attention to molecular systems, and graphene as well as enhancement in its SOC which will allow study how they can lead to multifunctional quantum materials to study electric field-controlled spin currents. Liquid phase and to two-dimensional (2D) nanoscale electronic and spintronic exfoliation of WS2 nanosheets (average size ~ 100nm, see devices. Currently, our research group is: fig1d) dispersed in suitable solvent was done by sonication and 1. preparingnanosheets of 2D materials via mechanical/liquid- subsequent centrifugation. Characterization like absorbance phase exfoliation. (see fig. 1e), fluorescence, transmission electron microscopy 2. investigating the charge transferbetweengraphene and (TEM), and X-ray photoelectron spectroscopy (XPS) was carried molecular systems/other 2D materials coupled to it. out. Hybrid graphene-WS2 heterojunctions will be fabricated 3. developing ultra-sensitive device and instrumentation for the using e-beam lithography and metallization. investigation of hybrid structure. Supramolecularelectronics: Supramolecularself-assemblies of pi-conjugated systems of length 5–100 nm is an excellent choice for supramolecularnanoelectronics. The formation of nanowires from aOctupolarOxadiazole derivative was studied by changing the parameters such as concentration, solvent and time for built up of self assemblies in solution. Figure 1a shows the morphologies (Atomic Force Microscopy (AFM) image) of the nanowire (mean thickness ~ 25 nm, see fig. 1b) film on SiO2/Si wafer. Scanning Electron Microscopy (SEM)image (fig. 1c) reconfirmed the occurrence of nanowire assembly. These nanowires were characterized with Raman spectroscopy, temperature dependent FTIR, fluorescence, and UV-VIS absorbance studies.In order to study supramolecularspintronics, e-beam lithography technique Figure 1: a) AFM image of supramolecular self-assembly. b) Height will be employed to fabricate magnetic electrodes that sandwiches profile along the line cut in (a). c) SEM image of supramolecular self- aforesaid supramolecule. This device architecture will give rise to assembly. d) UHR-TEM of WS2 nanosheets showing layered structure. magnetic tunnel junctions. Injecting spin through it and studying e) Absorbance spectra of few layer WS2 dispersion. The peaks at the magnetoresistive effects is an interesting field of exploration A(628nm), B(528nm), C(457nm) are the characteristic peaks where A which has various applications such as in RAM and hark disks. and B arises due to direct band gap transitions and weak peak at C is due to optical transitions between DOS of VB and CB. Inset:i)Bulk solution of [Collaborator: Dr. Shinto Varghese (TRC, IACS)] WS2 in NMP, ii)Monolayer WS2 in NMP after liquid phase exfoliation. Opening band gap in graphene due to proximity effects:The weak spin-orbit coupling(SOC) in graphene makes it SPONSORED PROJECT unsuitable for optoelectronic. On the other hand, Transition • Molecular spintronics....Waals heterostructures Metal Dichalcogenides (TMDC) have SOCs much higher in • Probing the interaction ……… Neutron Scattering and magnitude(SOCWS2=425meV) than graphene.This, combined complementary facilities with spin split bands makes them an ideal material for spintronics. However, TMDCs have low mobilities compared to graphene, $3«„„3¬«„„„„ In this project, proximity effect between graphene and TMDCs

124

Department of Spectroscopy

Department Profile People Faculty : 04 Post-doctoral Research Associate : 02 Ph.D. Students : 18 Non-Academic Staff : 03 Extra Mural Funding Projects (ongoing) : 05 Research Achievements Ayan Datta Ph.D. degree awarded : 02 Head of the Department Academic Activities Seminars organized : 03 Conference/Symposia/School organized : 00 Talks delivered by members of of department in conferences/symposia (National) : 06 Talks delivered by members of of department in conferences/symposia (International) : 01

126 Abhijit Kumar Das Senior Professor Theoretical and Computational Science Associates : (1) A Ghosh, JRF (UGC), (2) S Sarkar, JRF (UGC), (3) T Ash, SRF (CSIR), (4) T Debnath, SRF (CSIR), (5) T Banu, RA (Institute) and (6) K Sen, RA (Institute).

DECOM POSITION OF ORGANO PHOSPHORUS ATMOSPHERIC FATE OF CRIEGEEINTERMEDIATE : COMPOUNDS : Mechanistic investigation of the unimolecular, water/ammonia- The catalytic decomposition and detoxification of Chemical assisted decomposition reactions of the -hydroxyhydroperoxides Warfare Agents (CWAs)/Organophosphorus Compounds (HPs) and hydroperoxidearylamines (a-HPs) produced during the (OPCs) have been investigated thoroughly. styrene ozonolysis has been carried out theoretically.

REACTIVITY OF ENDOHEDRALMETALLOFULLERENS (EMFS) : A mechanistic investigations have been carried out to compare the reactivity of different C60 analogues by studying three fundamental reactions, hydrogenation, hydrolysis and Diels- Alder reactions.

AGOSTICINTERACTION : The impact of the agostic interaction on two well-recognized reaction processes, namely beta-hydride elimination and dehydrogenation for all d0 systems has been studied in detail.

CHEMICAL HYDROGEN STORAGE SYSTEMS :

The role ofTi(II) sandwich complex, [Cp2Ti], generated by the n combination of [Cp2TiCl2] and 2 equivalents of BuLi, in situ, in toluene has been investigated theoretically for the release of molecular hydrogen from a series of Liquid Organic Hydrogen Carriers (LOHCs).

HYDROGEN RELEASE MECHANISM OF CHEMICAL HYDROGEN STORAGE SYSTEMS (CSIR PROJECT) : Reactivity of endohedralmetallofullerens (EMFs) A mechanistic approach to explore the complete potential energy surface for the production of three molecules of H2 from PUBLICATIONS IN JOURNALS: methylamine-water mixture promoted by Ru-pincer complex has 1. Mechanistic insight into the molecular TiO2-mediated gas been proposed phase detoxication of DMMP: A theoretical approach - T Ash, T Debnath, A Ghosh and A K Das; Chem. Res. Toxicol. 30, 1177 CATALYTIC CONVERSION OF CO : (2017).[IF: 3.529] Reaction mechanisms for the conversion of toxic CO into non- 2. Mechanistic insight into the enhancement of reactivity of toxic organic molecules catalyzed by (PNP)RuH CO (1-Ru) and 2 C + in comparison with neutral C and EMFs towards different low cost base-metal pincer complexes have been explored. 60 60 fundamental reactions: A DFT approach - T Debnath, T Ash, J K Saha and A K Das; ChemistrySelect2, 4039 (2017).[IF: ]

127 3. Identification and characterization of intramolecular halo- 6. Theoretical analysis of tautomerism of succinimide and interaction in d0 complexes : A theoretical approach - T Debnath, analogous compounds: Insights from DFT approach - S Sarkar, T Ash, S Sarkar and A K Das; J Mol Modeling 23, 213(2017). T Ash, T Debnath and A K Das; Structural Chemisty29, 881 [IF:1.425] (2018).[IF:2.019] 4. Solvolysis of organophosphorous pesticide parathion with Ph.D. DEGREE AWARDED : simple and -nucleophiles : A theoretical study - C Sahu and A K (1) T. Banu (JU) Das; J Chem Sci.,129, 1301(2017).[IF:1.191] SPONSORED PROJECT 5. Strategy toward designing semiconducting polymer • Computational study ….. storage systems (CSIR) nanoparticle multichomophoric dye assembl - S Das, B Jana, LECTURES DELIVERED: T Debnath, A Ghoshal, A K Das and A Patra; J. Phys. Chem. Invited talk at (1) ICSPPCB-2018, Assam University, Silchar, C.,121, 4050 (2017).[IF:4.509] Assam.

Ayan Datta Associate Professor and Head Computational Modelling of Molecules, Materials and Aggregates

Associates : (1) R Bhattacharjee, RA-I (Institute), (2) S Karmakar, SRF (CSIR), (3) K Bhattacharyya, SRF (Institute), (4) T Mukhopadhyay, SRF (CSIR), (5) NMandal, JRF (CSIR), (6) B Saha, RA-II (Institute), (7) T Tashime, SRF (TWAS), (8) R Jana, JRF (DST project) and (9) D Das, JRF (CSIR).

Our group focuses on an unified understanding of phenomena we do realize that quantitative numbers are model dependent. at various length and time scales using techniques based on ab- Hence, most importantly, to gain a qualitative picture, we initio and extended quantum mechanical methods. This group has are always eager to work very closely with experimentalists to contributed towards two – dimensional systems like silicene and refine, reframe and even refute predictions. other graphene analogues and provided a relationship between electronic structure and ground state properties. We study various PUBLICATIONS IN JOURNALS aspects of both homogeneous and heterogeneouscatalysis 1. Gauging the nanotoxicity of h2D-C2N towards single- and examine the role of metal particles. Quantum mechanical stranded DNA: An in-silico molecular dynamics approach - T tunneling including carbon tunneling is investigated in various K Mukhopadhyay, K. Bhattacharyya and A Datta; ACS Appl. chemical transformations. Modeling of terahertz (THz) spectra Mater. Interfaces., 10, 13805 (2018).[IF:7.504] of crystal polymorphs is studied through solid – state DFT 2. Controlled pore sizes in monolayer C2N act as ultrasensitive phonon calculations. Optoelectronic properties of organic probes for detection of gaseous pollutants (HF, HCN, and H2S) molecules for Singlet Fission is actively pursued for extremely - K. Bhattacharyya, S M Pratik and A Datta; J. Phys. Chem. C, high LED efficiency. Dynamical behavior of these systems at finite 122, 2248 (2018).[IF:4.536] temperatures are captured using approximate methods like ab- 3. Dynamical effects along the bifurcation pathway control initio MD or classical MD or even reactive MD depending on the semibullvalene formation in deazetization reactions - N Mandal time-scale of the chemical or physical phenomenon of interest. and A Datta; J. Phys. Chem. B, 122, 1239 (2018).[IF:3.177] Recent interest have been to study solvent phase exfoliation of two-dimensional materials from their bulk van der Waals state 4. Structure and electronic properties of unnatural base of aggregation. One of our long-term interest lies in exploring pairs:The role of dispersion interactions -Sk Jahiruddin, N rare and unusual interactions in chemistry like nc-2e bonds Mandal and A Datta; ChemPhysChem., 19, 67 (2018).[2.847] orultrashort H...H non-bonded contacts and even hypervalent 5. Topological insulators in two-dimensional SiGe induced by species in constained environments. While, these structures have biaxial tensile strain - T Teshome and A Datta;, ACS Omega, at best, fleeting existence at ambient conditions many new phases 3, 1 (2018).[IF: ] of molecules/solids remain yet to be discovered particularly in the emerging area of high pressure chemistry. Though computational chemistry is evolving and improving,

128 6. Evidence of homo-FRET in quantum-dot-dye heterostructured Ÿ|­‘7`"!} assembly - SSaha, D Majhi, K Bhattacharyya, N Preeyanka and A and [1,5]H-sigmatropic shift reactions in Tetrahydro-1H- Datta and M Sarkar; Phys. Chem. Chem. Phys., 20, 9523 cyclobuta[e]indene derivatives - S Karmakar and A Datta; J. (2018).[IF:4.123] Org. Chem., 82, 1558 (2017).[IF:4.849] 7. Two-Dimensional graphene-gold interfaces serve as robust 20. Exploring ultrashort hydrogen–hydrogen nonbonded templetes for dielectric capacitors - T Teshome and A Datta; ACS contacts in constrained molecular cavities - N Mandal, S Applied Mater. Interfaces, 9, 34213 (2017).[IF:] M Pratik and A Datta; J. Phys. Chem. B, 121, 825 (2017). 8. Role of carbon support for subnanometer gold-cluster- [IF:3.177] catalyseddisiloxane synthesis from hydrosilane and water - R 21. Polymorphism controlled singlet fission in TIPS-Anthracene Bhattacharjee and A Datta; J. Phys. Chem. C, 121, 20101 : Role of stacking orientation - K Bhattacharyya and A Datta; J. (2017).[IF:4.536] Phys. Chem. C, 121, 1412 (2017).[IF:4.536] 9. Coexistence of normal and auxetic behavior in a thermal and 22. Design of van der Waals to-dimensional chemically stable sp3 nanothread : Poly[5]asterane - B Saha, S heterostructures from facially polarized Janus All-Cis M Pratik and A Datta; Chemistry – A Eur. J., 23, 12917 (2017). 1,2,3,4,5,6-Hexafluorocyclohexane (C6H6F6) - S M Pratik, [IF:5.317] A Nijamudheen and A Datta; J. Phys. Chem. C, 121, 1752 10. External electric field control : Driving the reactivity of metal- (2017).[IF:4.536] free azide-alkyne reactions -Kalishankar Bhattacharyya, S. 23. Deciphering the role of solvents in the liquid phase Karmakar and A Datta; Phys. Chem. Chem. Phys., 19, 22482 exfoliation of hexagonal boron nitride : A molecular dynamics (2017).[IF:4.123] simulation study - T K Mukhopadhyay and A Datta; J. Phys. 11. Visible light mediated excited state relaxation in semi- Chem. C, 121, 811 (2017).[IF:4.536] synthetic genetic alphabet : d5SICS and dNaM - K Bhattacharyya 24. Influence of hofmeister I- on tuning optoelectronic properties and A Datta; Chemistry – A Eur. J. (commun.), 23, 11494 of ampholyticpolythiophene by varying pH and conjugating with (2017).[IF: ] RNA - R Ghosh, D P Chatterjee, S Das, T K Mukhopadhyay, A 12. Understanding the reactivity of CO3•– and NO2• Radicals Datta and A Nandi; Langmuir, 33, 12739 (2017).[IF:3.833] toward S-Containing and aromatic amino acids - S Karmakar and A Datta; J. Phys. Chem. B, 121, 7621 (2017).[IF:3.17] Ph.D. DEGREE AWARDED : (1) S M Pratik (JU) 13. Effect of doping in controlling the structure, reactivity and electronic properties of pristine and Ca(II)-Intercalated layered SPONSORED PROJECT : silicone - T Teshome and A Datta; J. Phys. Chem. C., 121, • Designing Molecules …… Fission (DST-SERB) 15169 (2017).[IF:4.536] • Structure, Spectroscopy ….. Low-D Systems (BRNS) 14. Exotic physics and chemistry of two-dimensional phosphorus • Designing New ….. Photovoltaics (Indo-Russion Joint :Phosphorene –C Chowdhury and A Datta; J. Phys. Chem. Lett. Initivative) (Perspective), 8, 2909 (2017).[IF:9.353] • Spectroscopy for detection ….. molecules in COFs/MOFs 15. Monolayer group IV-VI monochalcogenides : Low dimensional (DST Belgium) materials for photocatalytic water splitting - C Chowdhury, S Karmakar and A Datta; J. Phys. Chem. C., 121, 7615 (2017). LECTURES DELIVERED: [IF:4.536] Invited talk at (1) IISER-Kolkata (2) TCS-IIT Bombay (3) JNCASR. 16. Ordering and dynamics for the formation of two-dimensional molecular crystals on black phosphorene - T K Mukhopadhyay and A Datta; J. Phys. Chem. C 121, 10210 (2017).[IF:4.536] 17. Size specific emission in peptide apped gold quantum clusters with tunable photoswitching behavior - A Baral, K Basu, S Ghosh, K Bhattacharyya, S Roy, A Datta and A Banerjee; Nanoscale, 9, 4419 (2017).[IF:7.367] 18. Direct and autocatalytic reductive elimination from gold complexes ([Ph3P)Au(Ar)CF3)(X)], X=F, Cl, Br, I) : The key role of halide ligands - R Bhattacharjee, A Nijamudheen and A Datta; Chemistry – A Eur. J., 23, 4169 (2017).[IF:5.317]

129 Prashant Chandra Singh Assistant Professor Investigation of soft interfaces by nonlinear spectroscopic technique Associates : (1) S Mandal, SRF (Institute), (2) B Biswas, SRF (CSIR), (3) S Sarkar, JRF (Inspire), (4) T Nandy, JRF (CSIR), (5) A Chowdhury, JRF (Institute) and (6) S Banerjee, RA-I (Institute)

• The folding mechanism of proteins 4. Role of dispersive fluorous interaction in the solvation • Stability of unnatural proteins dynamics of the perfluoro group containing molecules- S • Role of lipids in the blood coagulation Mondal, S Chaterjee, R Halder, B Jana, B Biswas, and P C • Role of weak intermolecular interaction in the aerosol Singh;J. Phys. Chem. B,121, 7681 (2017).[IF: ] formation 5. A combined molecular dynamics simulation, atoms in molecule analysis and IR study on the biologically important PUBLICATIONS IN JOURNALS bulk fluorinated ethanols to understand the role of weak 1. The unusual visible fluorescence violating the Kasha’s rule interactions in their structural microheterogeneity and hydrogen suggests the aggregation of guanidinium carbonate in its Bond Network -S Mondal, B Biswas, S Sarkar and P C Singh; aqueous medium - B Biswas and P C Singh; J. Mol. Liq., 253, J. Mol. Liq., 240, 708-716(2017).[IF: ] 211(2018).[IF: ] 2. Cooperative hydrogen-bond dynamics at a Zwitterionic Lipid/ SPONSORED PROJECT water interface revealed by 2D HD-VSFG spectroscopy -K Inoue • Structural changes …. Fourier transformation infrared and P C Singh, S Nihonynagi, S Yamaguchi and T Tahara, J. (CSIR) Phys. Chem. Lett.,8, 5160 (2017).[IF: ] • Molecular level …….. Frequency Generation ??? 3. Hydrophobic fluorine mediated switching of hydrogen bonding site as well as orientation of water molecules in the aqueous LECTURES DELIVERED : mixture of monofluoroethanol : IR, molecular dynamics and Invited talk at (1) FCS Guwahati, 2017 (2) IACS, 2017 quantum chemical studies – S Mondal, B Biswas, T Nandy and P C Singh; Phy. Chem. Chem. Phys., 19, 24667 (2017). [IF:4.123]

130

Department of Theoretical Physics

Department Profile People Faculty : 10 Post-doctoral Research Associate : 09 Ph.D. Students : 22 Non-Academic Staff : 05 Extra Mural Funding Projects (ongoing) : 03 Research Achievements Sourov Roy Ph.D. degree awarded : 01 Head of the Department Academic Activities Seminars organized : 43 Conference/Symposia/School organized : 03 Talks delivered by members of department in conferences/symposia (National) : 42 Talks delivered by membersof department in conferences/symposia (International) : 03

132 Soumitra SenGupta, FNASc Senior Professor and Dean (Academic & Student Affairs) Extra dimensional Theories, Braneworld, Supergravity, String Theory, Gravity, Cosmology, Blackholes Associates : (1) S Chakraborty, NPDF-SERB-DST (Joined on 06.04.2017), (2) I Banerjee, RA-II (Joined on 29.06.2017), (3) H Mukherjee, SRF, (4) B Mondal, JRF (UGC), (5) A Debnath, JRF (UGC) (Joined on 25.09.2017), (6) S Sau, JRF (CSIR) (Joined on 21.09.2017) and (7) T Paul, Part time Honorary Research Worker. Collaborators: (1) B Mukhopadhyaya (HRI, Allahabad); (2) S Sen (Jamia Millia Islamia University, New Delhi); (3) S Kar (IIT-Kharagpur); (4) A Sen (Jamia Millia Islamia University, New Delhi); (5) D Choudhury (Delhi University); (6) S Choudhury (TIFR, Mumbai).

RADION STABILIZATION IN HIGHER CURVATURE background spacetime and hence acts as a storehouse of WARPED SPACETIME: information regarding the nature of gravitational interaction We consider a five dimensional Ad Sspacetime in presence of in extreme situations. The surfeit of data available in the higher curvature term like F(R)=R+R2 in the bulk. In this model, electromagnetic domain provides a further motivation to explore we examine the possibility of modulus stabilization from the scalar such systems. Using the optical data for eighty Palomar Green degrees of freedom of higher curvature gravity free of ghosts. Our quasars we demonstrate that the theoretical estimates of optical result reveals that the model stabilizes itself and the mechanism luminosity explain the observations best when the axionic field of modulus stabilization can be argued from a geometric point of is assumed to be absent. However, axion which violates the view. We determine the region of the parametric space for which energy condition seems to be favored by observations which has the modulus (or radion) can to be stabilized. We also show how several interesting consequences. Error estimators, including the mass and coupling parameters of radion field are modified reduced 2, Nash-Sutcliffe efficiency, index of agreement due to higher curvature term leading to modifications of its and modified versions of the last two are used to solidify our phenomenological implications on the visible 3-brane. conclusion and the implications of our result are discussed. (With A Das, H Mukherjee and T Paul, published in Eur.Phys.J. C.) (With I Banerjee and B Mandal, published in JCAP)

IN QUEST OF AXIONIC HAIRS IN QUASARS : FERMION LOCALIZATION IN HIGHER CURVATURE The presence of axionic field can provide plausible explanation SPACETIME: to several long standing problems in physics such as dark matter Fermion localization in a braneworld model in presence and dark energy. The pseudo-scalar axion whose derivative of dilaton coupled higher curvature Gauss–Bonnet bulk corresponds to the Hodge dual of the Kalb-Ramond field gravity is discussed. It is shown that the lowest mode of left strength in four dimensions plays crucial roles in explaining handed fermions can be naturally localized on the visible several astrophysical and cosmological observations. Therefore, brane due to the dilaton coupled higher curvature term the detection of axionic hairs/Kalb-Ramond field which appears without the necessity of any external localizing bulk field. as closed string excitations in the heterotic string spectrum may (With S Choudhury and J Mitra, published in Class.Quant.Grav.) provide a profound insight to our understanding of the current universe. The current level of precision achieved in solar-system FERMION LOCALIZATION IN HIGHER CURVATURE based tests employed to test general relativity, is not sufficient to AND SCALAR–TENSOR THEORIES OF GRAVITY : detect the presence of axion. However, the near horizon regime It is well known that in a braneworld model, the localization of of quasars where the curvature effects are maximum seems to fermions on lower dimensional submanifold (say a TeV 3-brane) be a natural laboratory to probe such additions to the matter is governed by the gravity in the bulk which also determines the sector. The continuum spectrum emitted from the accretion corresponding phenomenology on the brane. Here we consider disk around quasars encapsulates the imprints of the a five dimensional warped spacetime where the bulk geometry is governed by higher curvature like F(R) gravity. In such a

133 scenario, we explore the role of higher curvature terms on the MODULUS STABILIZATION IN A NON-FLAT WARPED localization of bulk fermions which in turn determines the effective BRANEWORLD SCENARIO: radion-fermion coupling on the brane. Our result reveals that The stability of the modular field in a warped brane world for appropriate choices of the higher curvature parameter, the scenario has been a subject of interest for a long time. profiles of the massless chiral modes of the fermions may get Goldberger and Wise (GW) proposed a mechanism to achieve localized near TeVbrane while that for massive Kaluza-Klein (KK) this by invoking a massive scalar field in the bulk space-time fermions localize towards the Planck brane. We also explore neglecting the back-reaction. In this work, we examine the these features in the dual scalar-tensor model by appropriate possibility of stabilizing the modulus without bringing about transformations. The localization property turns out to be identical any external scalar field. We show that instead of flat 3-branes in both the models. This rules out the possibility of any signature as considered in Randall–Sundrum (RS) warped braneworld of massive KK fermions in TeV scale collider experiments due to model, if one considers a more generalized version of warped higher curvature gravity effects. geometry with de Sitter 3-brane, then the brane vacuum energy automatically leads to a modulus potential with a (With T Paul and J Mitra, published in Phys.Rev.D.) metastable minimum. Our result further reveals that in this EXCAVATING BLACK HOLE CONTINUUM SPECTRUM: scenario the gauge hierarchy problem can also be resolved for an appropriate choice of the brane’s cosmological constant. POSSIBLE SIGNATURES OF SCALAR HAIRS AND OF (With I Banerjee, published in Eur.Phys.J. C.) HIGHER DIMENSIONS : Continuum spectrum from black hole accretion disc holds FERMION LOCALIZATION IN A BACKREACTED enormous information regarding the strong gravity regime WARPED SPACETIME : around the black hole and hence about the nature of gravitational We consider a five dimensional AdS warped spacetime in interaction in extreme situations. Since in such strong gravity presence of a massive scalar field in the bulk. The scalar regime the dynamics of gravity should be modified from the \ field potential fulfills the requirement of modulus stabilization EH one, its effect should be imprinted on the continuum even when the effect of backreaction of the stabilizing field is spectrum originating from the black hole accretion. To explore taken into account. In such a scenario, we explore the role the effects of these alternative theories on the black hole of backreaction on the localization of bulk fermions which in continuum spectrum in an explicit manner, we have discussed turn determines the effective radion-fermion coupling on the three alternative gravitational models having their origin in three brane. Our result reveals that both the chiral modes of the zerothKaluza-Klein (KK) fermions get localized near TeVbrane distinct paradigms --- (a) higher dimensions, (b) higher curvature as the backreaction of the scalar field increases. We also gravity and (c) Horndeski theories. All of them can have signatures show that the profile of massive KK fermions shifts towards sculptured on the black hole continuum spectrum, distinct from the Planck brane with increasing backreaction parameter. the standard general relativistic scenario. Interestingly all these (With T Paul, published in Phys.Rev.D.) models exhibit black hole solutions with tidal charge parameter which in these alternative gravity scenarios can become negative, STUDY OF SUPERRADIANT INSTABILITY OF A in sharp contrast with the Reissner-Nordstr\”om black hole. Using DILATON-AXION BLACK HOLE UNDER SCALAR the observational data of optical luminosity for eighty Palomer PERTURBATION : Green quasars we have illustrated that the difference between We study the superradiant instability of dilaton-axion black the theoretical estimates and the observational results gets holes. For such black holes we examine whether there exists minimized for negative values of the tidal charge parameter. As a any potential barrier outside the event horizon that can kill quantitative estimate of this result we concentrate on several error the superradiant modes. Our result exhibits that the dilaton- estimators, including reduced 2, Nash-Sutcliffe efficiency, index axion couplings do not lead to any superradiant instability of agreement etc. Remarkably, all of them indicates a negative under scalar perturbation. This establishes the robustness of value of the tidal charge parameter, signaling the possibility of superradiant stability for a much wider class of black holes. (With T Ghosh, published in EPL) higher dimensions as well as scalar charge at play in those high gravity regimes. GRAVITY STABILIZES ITSELF : (With I Banerjee and S Chakraborty, published in Phys.Rev. D) We show that a possible resolution to the stabilization of an extra spatial dimension (radion) can be obtained solely in the BOUNCING COSMOLOGY FROM WARPED EXTRA context of gravitational dynamics itself without the necessity DIMENSIONAL SCENARIO : of introducing any external stabilizing field. In this scenario From the perspective of four dimensional effective theory on a the stabilized value of the radion field gets determined in two brane warped geometry model, we examine the possibility terms of the parameters appearing in the higher curvature of “bouncing phenomena”on our visible brane. Our results gravitational action. Furthermore, the mass of the radion field reveal that the presence of warped extra dimension lead to a and its coupling to the fields are found to non-singular bounce on the brane scale factor and hence can be in the weak scale implying possible signatures in the TeV remove the “big-bang singularity”. We also examine the possible scale colliders. Some resulting implications are also discussed. parametric regions for which this bouncing is possible. (With S Chakraborty, published in Eur.Phys.J. C.) (With A Das, D Maity and T Paul, Published in Eur.Phys.J. C.) 134 STRONG GRAVITATIONAL LENSING --- A PROBE FOR 5. Excavating black hole continuum spectrum: Possible EXTRA DIMENSIONS AND KALB-RAMOND FIELD : signatures of scalar hairs and of higher dimensions- I Banerjee, Strong field gravitational lensing in the context of both higher S Chakraborty and S SenGupta; Phys.Rev. D.,96 no.8, 084035 spacetime dimensions and in presence of Kalb-Ramond field (2017).[IF:4.568] have been studied. After developing proper analytical tools 6. Bouncing cosmology from warped extra dimensional to analyze the problem we consider gravitational lensing in scenario- A Das, D Maity, T Paul and S SenGupta; Eur.Phys.J. three distinct black hole spacetimes - (a) four dimensional C.,77 no.12, 813 (2017). [IF:5.331] black hole in presence of Kalb-Ramond field, (b) brane world 7. Modulus stabilization in a non-flat warped braneworld black holes with Kalb-Ramond field and finally (c) black hole scenario - I Banerjee and S SenGupta; Eur. Phys.J. C.,77 no.5, solution in f(T) gravity. In all the three situations we have 277 (2017).[IF:5.331] depicted the behavior of three observables: the asymptotic position approached by the relativistic images, the angular 8. Fermion localization in a backreacted warped spacetime - T separation and magnitude difference between the outermost Paul and S SenGupta; Phys.Rev. D.,95 no.11, 115011 (2017). images with others packed inner ones, both numerically and [IF:4.568] analytically. Difference between these scenarios have also 9. Study of superradiant instability of a dilaton-axion black been discussed along with possible observational signatures. hole under scalar perturbation - T Ghosh and S SenGupta; (With S Chakraborty, published in JCAP) EPL120 no.5, 50003 (2017).[IF:1.957] 10. Gravity stabilizes itself - S Chakraborty, S SenGupta; Eur. PUBLICATIONS IN JOURNALS : Phys.J. C.,77 no.8, 573 (2017).[IF:5.331] 1. Radion stabilization in higher curvature warped spacetime - A Das, H Mukherjee, T Paul and S SenGupta; Eur.Phys.J. C.78 11. Strong gravitational lensing - A probe for extra dimensions no.2, 108(2018).[IF-5.331] and Kalb-Ramond field- S Chakraborty and S SenGupta; JCAP 1707 no.07, 045 (2017).[IF:4.734] 2. In quest of axionic hairs in quasars- I Banerjee, B Mandal and S SenGupta; JCAP, 1803 no.03, 039(2018).[IF:4.734] LECTURES DELIVERED: 3. Fermion localization in higher curvature spacetime – S Invited talk at (1) National Workshop on CCEGR-2017, Choudhury, J Mitra and S SenGupta; Class.Quant.Grav. 35, Univ. of Burdwan; (2) DST-Inspire Camp, Viswabharati, no.2, 025007(2018).[IF:3.119] Santiniketan; (3) RECAPP, HRI Allhabad; (4) Workshp at Rishi 4. Fermion localization in higher curvature and scalar–tensor Bankim Chandra College, Naihati, 24 PGS(N); (5) Dept. of theories of gravity- J Mitra, T Paul and S SenGupta; Eur.Phys.J. Mathematics, Jadavpur Univ., Kolkata. C,77 no.12, 833(2017).[IF:5.331] SPONSORED PROJECT : • Search for signatures …….. beyond Einstein (SERB)

Utpal Chattopadhyay Senior Professor Elementary Particle Theory: Physics beyond the standard model, particularly involving physics of low energy super symmetry. Phenomenological implications of various super symmetry breaking mechanisms. Constraining super symmetric models via super symmetric dark matter analyses Associates : (1) S Mukherjee, SRF, (2) A K Swain, NPDF-SERB-DST (Joined on 09.10.2017), (3) A Dey, Part time Honorary Research Worker Collaborators: 1) A Chakraborty (TIFR, Mumbai); (2) A Choudhury (Jogamaya Devi College, Kolkata); (3) A Datta (CU, Kolkata); (4) D K Ghosh (IACS); (5) B Bhattacherjee (Kavli IPMU, Japan); (6) D Das (IOP, Bhubaneswar); (7) S Poddar (Netajinagar College, Kolkata); (8) A K Datta (HRI, Allahabad); (9) J Beuria (HRI, Allahabad) .

135 EXPLORING NON-HOLOMORPHIC SOFT TERMS associated uncertainty. The similar combined lower limit for a IN THE FRAMEWORK OF GAUGE MEDIATED wino DM is about 1 TeV. There is hardly any collider bound SUPERSYMMETRYBREAKING : from the LHC for squarks and sleptons in such a compressed It is known that in the absence of a gauge singlet field, a specific scenario where as fermion masses are close to the mass of a class of supersymmetry (SUSY) breaking non-holomorphic higgsino/wino LSP. (NH) terms can be soft breaking in nature so that they may be (With M Chakraborti and S Poddar, published in JHEP) considered along with the Minimal Supersymmetric Standard Model (MSSM) and beyond. There have been studies related to EXPLORING VIABLE VACUA OF THE Z3-SYMMETRIC these terms in minimal supergravity based models. Consideration NMSSM : of an F-type SUSY breaking scenario in the hidden sector with two We explore the vacua of the Z3-symmetric Next-to-Minimal chiral superfields however showed Planck scale suppression of Supersymmetric Standard Model (NMSSM) and their stability such terms. In an unbiased point of view for the sources of SUSY by going beyond the simplistic paradigm that works with breaking, the NH terms in a phenomenological MSSM (pMSSM) a tree-level neutral scalar potential and adheres to some type of analysis showed a possibility of a large SUSY contribution specific flat directions in the field space. We work in the so- | called phenomenological NMSSM (pNMSSM) scenario. Higgs boson mass and a drastic reduction of the electroweak Also, for our purpose, we adhere to a reasonably ‘natural’ fine-tuning for a higgsino dominated LSP in some regions of setup by requiring |μeff| not too large. Key effects are parameter space. We first investigate here the effects of the NH demonstrated by first studying the profiles of this potential terms in a low scale SUSY breaking scenario. In our analysis with under various circumstances of physical interest via a semi- minimal gauge mediated supersymmetry breaking (mGMSB) we analytical approach. The results thereof are compared to the probe how far the results can be compared with the previous ones obtained from a dedicated package like Vevacious which pMSSM plus NH terms based study. We particularly analyze the further incorporates the thermal effects to the potential. Regions Higgs, stop and the electroweakino sectors focusing on a higgsino of the pNMSSM parameter space that render the desired dominated LSP and lighter chargino, a feature typically different symmetry breaking (DSB) vacuum absolutely stable, long- from what appears in mGMSB. The effect of a limited degree of or short-lived (in relation to the age of the Universe) under RG evolutions and vanishing of the trilinear coupling terms at the quantum/thermal tunneling are delineated. Regions that result messenger scale can be overcome by choosing a non-minimal in the appearance of color and charge breaking (CCB) minima GMSB scenario, such as one with a matter-messenger interaction. are also presented. It is demonstrated that light singlet scalars (With D Das and S Mukherjee, published in JHEP) along with a light LSP (lightest supersymmetric particle) having an appreciable singlino admixture are compatible with a viable HOW LIGHT A HIGGSINO OR A WINO DARK MATTER DSB vacuum. Their implications for collider experiments are CAN BECOME IN A COMPRESSED SCENARIO OF MSSM commented upon. :Higgsinos and Wino have strong motivations for being Dark (With J Beuria, A Datta and A Dey, published JHEP) Matter (DM) candidates in supersymmetry, but their annihilation cross sections are quite large. For thermal generation and a single PUBLICATIONS IN JOURNALS component DM setup the higgsinos or wino may have masses 1. Exploring non-holomorphic soft terms in the framework of of around 1 or 2-3 TeV respectively. For such DM candidates, gauge mediated supersymmetry breaking- U Chattopadhyay, a small amount of slepton coannihilation may decrease the D Das and S Mukherjee; JHEP1801, 158(2018).[IF:6.063] effective DM annihilation cross section. This, in turn reduces the 2. How light a higgsino or a wino dark matter can become lower limit of the relic density satisfied DM mass by more than in a compressed scenario of MSSM, M Chakraborti, U 50%. Almost a similar degree of reduction of the same limit is Chattopadhyay and S Poddar; JHEP1709, 064(2017). also seen for squark coannihilations. However, on the contrary, [IF:6.063] for near degeneracy of squarks and higgsino DM, near its generic 3. Exploring viable vacua of the Z3-symmetric NMSSM, J. upper limit, the associated coannihilations may decrease the relic Beuria, U Chattopadhyay, A K Datta and A Dey; JHEP1704 density, thus extending the upper limit towards higher DM masses. 024(2017).[IF:6.063] We also compute the direct and indirect detection signals. Here, because of the quasi-mass degeneracy of the squarks and the LSP, LECTURES DELIVERED : we come across a situation where squark exchange diagrams may Invited talk at (1) SINP, Kolkata; (2) TIFR, Mumbai; (3) contribute significantly or more strongly than the Higgs exchange International Conference on PASCOS-2017 at Madrid, Spain; contributions in the spin-independent direct detection cross (4) International Conference on SUSY-2017) at TIFR, Mumbai; section of DM. For the higgsino-DM scenario, we observe that a (5) Fakir Chand College, Diamond Harbour, 24Pgs(S). DM mass of 600 GeV to be consistent with WMAP/PLANCK and LUX data for sfermioncoannihilations. The LUX data itself excludes the region of 400 to 600 GeV, by a half order of magnitude of the cross-section, well below the

136 Koushik Ray Professor String Theory and Mathematical Physics Associates : (1) S Bhowmick, RA-I

DETERMINATION OF MANY-ELECTRON BASIS PUBLICATIONS IN JOURNALS FUNCTIONS FOR A QUANTUM HALL GROUND STATE 1. Determination of many-electron basis functions for a USING SCHURPOLYNOMIALS : Quantum Hall ground state using Schur polynomials- S S A method for determining the ground state of a planar interacting Mandal, S Mukherjee and K Ray, Annals Phys. 390 236(2018). many-electron system in a magnetic field perpendicular to [IF:2.465] the plane is described. The ground state wave-function is expressed as a linear combination of a set of basis functions. 2. Bulk reconstruction in AdS and Gel’f and-Graev-Radon Given only the flux and the number of electrons describing an transform - S Bhowmick, K Ray and S Sen, JHEP1710 incompressible state, we use the combinatorics of partitioning 082(2017).[IF:6.063] the flux among the electrons to derive the basis wave-functions as linear combinations of Schur polynomials. The procedure ensures that the basis wave-functions form representations of the angular momentum algebra. We exemplify the method by deriving the basis functions for the 52 quantum Hall state with a few particles. We find that one of the basis functions is precisely the Moore–Read Pfaffian wave function. (With S SMandal and S Mukherjee, published in Annals. Phys.)

BULK RECONSTRUCTION IN ADS AND GEL’FAND- GRAEV-RADON TRANSFORM: The bulk reconstruction formula for a Euclidean anti-de Sitter space is directly related to the inverse of the Gel’fand-Graev-Radon transform. Correlation functions of a conformal scalar field theory in the boundary are thereby related to correlation functions of a self- interacting scalar field theory in the bulk at different loop orders. (With S Bhowmick and S Sen, published JHEP)

137 Sourov Roy Senior Professor and Head Physics beyond the Standard Model, in particular, phenomenology of supersymmetric theories. Higgs physics, Collider Physics. Neutrino masses and mixing. Models of warm dark matter and X-ray observations Associates : (1) H Banerjee, SRF, (2) P B Byakti, RA-I (Resigned on 01.08.2017), (3) S Ganguly, JRF, UGC (Joined on 24.07.2017), (4) A Tapadar, Int. PPS Project student and (5) H Bharadwaj, Delhi Univ. (Jt. Supervisor).

GENERATION OF A RADIATIVE NEUTRINO MASS IN THE LINEAR SEESAW FRAMEWORK, CHARGED LEPTON FLAVOR VIOLATION, AND DARK MATTER:

We investigate a model with local U(1)B-L and discrete Z2 symmetries where two types of weak isospin singlet neutrinos, vectorlike charged leptons, and exotic scalar fields are introduced. The linear seesaw mechanism is induced at the one-loop level through Yukawa interactions associated with the standard model leptons and exotic fields. We also discuss lepton flavor violation and muon anomalous dipole magnetic moment induced by Feynman diagram for DM annihilation the new Yukawa interaction. In addition, our model has dark matter candidate which is the lightest Z2 odd neutral particle. We calculate the relic density and constraints from direct detection. (With A Das, T Nomura and H Okada, published in Phys.Rev.D.) PUBLICATIONS IN JOURNALS 1.Generation of a radiative neutrino mass in the linear seesaw framework, charged lepton flavor violation and dark matter - A Das, T Nomura, H Okada and S Roy; Phys.Rev. D.,96 no.7, 075001(2017).[IF:4.568]

LECTURES DELIVERED: Invited talk at (1) CANDARK 2017, ICTS, TIFR, Bengaluru; (2) Miniworkshop at TIFR, Mumbai; (3) Conference Nu-HoRIzons VII, HRI, Allahadabad; (4) Sangam@HRI:Instructional workshop in Particle Physics. Feynman diagram forf the charged lepton fflavor violation processes lilj.

138 Pushan Majumdar Professor Lattice Gauge Theory and Mathematical Physics Associates : (1) D Mukhopadhyay, RA-I (resigned on 28/02/2018) Collaborators: (1) S Gupta (TIFR, Mumbai) ; (2) R Gavai (TIFR, Mumbai); (3) S Datta (TIFR, Mumbai) ; (4) N Mathur (TIFR, Mumbai); (5) E Gasparim (University of Antofagasta, Chile).

ACCELERATING LATTICE QCD SIMULATIONS WITH 2 QCD algorithm is known to be bandwidth bound; our timing FLAVOURS OF STAGGERED FERMIONS ON MULTIPLE results illustrate this clearly, and we discuss how this limits the GPUS USING OPENACC - A FIRST ATTEMPT : parallelization gains. We achieve more than a factor three We present the results of an effort to accelerate a Rational speed-up compared to the CPU only MPI program. Hybrid Monte Carlo (RHMC) program for lattice quantum (With S Gupta) chromodynamics (QCD) simulation for 2 flavours of staggered LECTURES DELIVERED: fermions on multiple Kepler K20X GPUs distributed on different Invited talk at (1) Presidency University, Kolkata nodes of a Cray XC30. We do not use CUDA but adopt a higher level directive based programming approach using the Open ACC platform. The lattice

Krishnendu Sengupta, FASc, FNASc Senior Professor Condensed Matter Physics: Graphene, Non-equilibrium dynamics of quantum critical system, Physics of Ultracold atoms, Quantum Phase Transitions

Associates: (1) S Kar, SRA (CSIR), (2) S De Sarkar, SRF (Resigned on 18.04.2017), (3) D Sinha, RA-I, (4) B Mukherjee, SRF, (5) R Ghosh (SPMF-CSIR) (6) M Sarkar, JRF (Joined on 11.12.2017)

During 2017-18, I and my group members and collaborators have 3. Effect of magnetic field and Rashba Spin-Orbit interaction on looked into several aspects of physics of strong correlations and the Josephson unneling between topological superconductors dynamics in ultracold atom and condensed matter systems. Our - E Nakhmedov, O Alekperov, F Tatardar, Yu M Shukrinov, I finding in these areas are summarized in the research publications. Rahmonov and K Sengupta; Phys Rev. B.,96, 014519 (2017). [IF:3.836] PUBLICATIONS IN JOURNALS : 4. Magnetization reversal by superconducting current in 0 1. Ramp and periodic dynamics across non-Ising critical points Josephson junction, Yu M Shukrinov, I R Rahmonov, K Sengupta - R Ghosh, A Sen and K. Sengupta, Phys. Rev. B.,97, 014309 and A Buzdin, Appl. Phys.Lett.,110, 182407 (2017).[IF:2.068] (2018).[IF:3.836] 5. Bosons with incommensurate potential and spin-orbit 2. Anisotropic transport of normal metal-Barrier-normal metal coupling - S Ray, B Mukherjee, S Sinha and K Sengupta; Phys. transport in monolayer phosphorene - S de Sarkar, A Agarwal and Rev. A,96, 023607 (2017).[IF:2.925] K Sengupta; J. Phys. Cond.Mat.,29, 285601 (2017).[IF:2.649]

139 6. Magnetization induced dynamics of a Josephson junction LECTURES DELIVERED: coupled to a nanomagnet- R Ghosh, M Maiti, Yu M Shukrinov Invited talk at (1) School and Conference, IMSc, Chennai; and K Sengupta, Phys Rev. B,96, 174517 (2017).[IF:3.836] (2) Workshop at ICTS, TIFR, Bengaluru; (3) Conference on 7. An exactly solvable quench protocol for integrable spin CMDAYS17, Tezpur University, Assam; (4) Infosys condensed models - D. Das, S. R. Das, D A Galante, R C Myers and K. matter, TIFR, Mumbai; (5) Kaziranga University, Assam; (6) Sengupta, JHEP, 11, 157 (2017). [IF:6.063] ICTS, Bengaluru; (7) EPCQS-18, SNBNCBS, Kolkata; (8) Workshop at Stellenbosch, South Africa; (9) IISER-Pune. Ph.D. DEGREE AWARDED : (1) Sangita De Sarkar (CU). SPONSORED PROJECT Non-equilibrium dynamics …… ultracold atoms (DST)

Dilip Kumar Ghosh Professor Physics beyond the Standard Model, in particular, phenomenology of supersymmetric theories at colliders, CP violation, B physics, Dark matter, Neutrino physics Associates : (1) N Ghosh, SRF (CSIR), (2) A Shaw, RA-I,(3) A Biswas RA-I

SEARCH FOR BOTTOM SQUARKS IN THE BARYON- DARK MATTER AND COLLIDER STUDIES IN THE LEFT-RIGHT NUMBER VIOLATING MSSM : SYMMETRIC MODEL WITH VECTOR LIKE LEPTONS : We consider a scenario of a minimal supersymmetric standard In the context of a left-right symmetric model, we introduce model with R-parity violation, where the lightest supersymmetric one full generation of vector like lepton doublets (both left- particle is the lighter bottom squark. We study the production of and right-handed) together with their mirror doublets. We a bottom squark pair at the LHC and their subsequent decays show that the lightest vectorlike neutrino in the model is right-handed, and can serve as the dark matter candidate. through the baryon number violating operators leading to a top We find that the relic density as well as the direct and pair with two light quarks. Looking for both semileptonic and indirect DM detection bounds are satisfied for a large range fully hadronic (no leptons) final states, we perform cut-based of the parameter space of the model. In accordance with as well as multivariate analyses (MVA) to estimate the signal the parameter space, we then explore the possibility of significance at the 13 TeV run of the LHC. We find that a cut- detecting signals of the model at both the LHC and the ILC, based analysis can probe bottom squark mass up to 750 GeV, in the pair production of the associated vectorlike charged which may be extended up to 850 GeV using MVA with 300 fb-1 leptons which decay into final states including dark matter. integrated luminosity. The fully hadronic final state, however, is A comprehensive analysis of signal and backgrounds shows not as promising. that the signals at the ILC, especially with polarized beams, are likely to be visible for light vectorlike leptons, even with low luminosity, rendering our model highly predictable and experimentally testable. PUBLICATIONS IN JOURNALS 1. Search for bottom squarks in the baryon-number violating MSSM - D Bardhan, A Chakraborty, D Choudhury, D K Ghosh and M Maity, Phys.Rev. D,96 no.3, 035024 (2017). [IF:4.568] 2. Dark matter and collider studies in the left-right symmetric model with vector like leptons - S Bahrami, M Frank, D Plot of significance versus the integrated luminosity. While the inset K Ghosh, N Ghosh and I Saha, Phys.Rev. D95 no.9, legend shows the color for the different benchmark points, the solid line 095024(2017).[IF:4.568] corresponds to the significance corresponding to the cut-based analysis and the dashed line to that provided by the multivariate analysis. LECTURES DELIVERED : Horizontal lines at 2and 5 indicate the potential for exclusion and Invited talk at (1) CANDARK-2017, ICTS, TIFR, Bengaluru; discovery. (2) National Taiwan University, Taipei, Taiwan 140 Arnab Das Associate Professor Statistical and Condensed Matter Physics; Quantum Non equilibrium dynamics, Adiabatic quantum Computation

Associates: (1) K Basu, SRF, (2) A Haldar, SRF, (3) M Mondal, Part time Honorary Research Worker

During the year in question we have been working on few above which the system exhibits non-ergodicbehaviour. The focused areas of Non-equilibrium quantum many-body Physics, onset appears at strong, but not fast driving. This in particular including (but not limited to) the broad issues of thermalization puts it beyond the scope of high-frequency expansions. The onset of a periodically driven quantum many-body system and location shifts, but it is robustly present, across wide variations of signature of ground-state quantum phase transitions in highly the model Hamiltonian such as driving frequency and protocol, excited states. In the following we summarize only two of the as well as the initial state. The portion of nonergodic states in works. the Floquet spectrum, while thermodynamically subdominant, has a finite entropy. We find that the magnetisation as an MULTIFRACTALITY WITHOUT FINE-TUNING IN A emergent conserved quantity underpinning the freezing; indeed FLOQUET QUASIPERIODIC CHAIN : the freezing effect is readily observed, as initially magnetised Periodically driven, or Floquet, disordered quantum systems states remain partially frozen up to infinite time. This result, have generated many unexpected discoveries of late, such as which bears a family resemblance to the Kolmogorov-Arnold- the anomalous Floquet Anderson insulator and the discrete Moser scemario for classical dynamical systems, could be a time crystal. Here, we report the emergence of an entire band valuable ingredient for extending Floquet engineering to the of multifractalwavefunctions in a periodically driven chain of interacting realm. non-interacting particles subject to spatially quasiperiodic (With A Haldar and R Moessner, Phys, Rev.B,97,245122,2018) disorder. Remarkably, this multifractality is robust in that it does not require any fine-tuning of the model parameters, which LECTURES DELIVERED: sets it apart from the known multifractality of criticalcritical Invited talk at (1) ICTS, TIFR, Bengaluru; (2) workshop on wavefunctions. The multifractality arises as the periodic drive Quantum Computation, IISc, Bangalore; (3) Seminar on hybridises the localised and delocalised sectors of the undriven Infosys, TIFR, Mumbai; (4) Bose Institute, Kolkata; (5) SINP, spectrum. We account for this phenomenon in a simple random Kolkata; (6) EPCQS-18, SNBNCBS, Kolkata. matrix based theory. Finally, we discuss dynamical signatures of the multifractal states, which should betray their presence in SPONSORED PROJECT cold atom experiments. Such a simple yet robust realisation of • Spin liquids : Correlations ..... disorder (collaborative multifractality could advance this so far elusive phenomenon project) towards applications, such as the proposed disorder-induced enhancement of a superfluid transition. (With S Roy, I M. Khaymovich and R Moessner, Sci.Post Phys,4,025,2018)

ONSET OF FLOQUET THERMALISATION : In presence of interactions, a closed, homogeneous (disorder- free) many-body system is believed togenerically heat up to an `infinite temperature’ ensemble when subjected to a periodic drive: in the spirit of the ergodicity hypothesis underpinning statistical mechanics, this happens as no energy or other conservation law prevents this. Here we present an interacting Ising chain driven by a field of time-dependent strength, where such heating onsets only below a threshold value of the drive amplitude,

141 Arnab Sen Assistant Professor Statistical and Condensed Matter physics; spin liquids, phase transitions, entanglement in many-body systems, Monte-Carlo methods Associates : (1) S Nandy, SRF, (2) T K Bose, RA-I (Institute).

Mainly in the fields of strongly correlated systems and statistical Zhuang You, Zhong-Yi Lu, A Sen, Anders W. Sandvik, Cenke Xu mechanics. Some recent focus areas include and Zi Yang Meng, Phys. Rev. X7, 031052 (2017).[IF:12.789] • Frustrated magnets and spin liquids • Unconventional phase transitions LECTURES DELIVERED : • Entanglement properties of many-body systems (1) IIT, Guwahati; (2) Ramakrishna Mission Vivekananda • Numerical many-body physics University, Bellur; (3) SNBNCBS, Kolkata; (4) IIT-Madras; (5) IIT-Bombay; (6) 9th IACS-APCTP Jt. Conference, Kolkata; PUBLICATIONS IN JOURNALS (7) IISc,3 Bangalore; (8) CCMT Seminar, IISc Bangalore; (9) 1. A periodically driven integrable systems and their emergent SNBNCBS, Kolkata; (10) CMT seminar at MPIPKS, Dresden; steady states - S Nandy, A Sen, and D Sen; Phys. Rev., X7, (11) ICTS Bangalore; (12) Scottish Church College, Kolkata. 031034 (2017).[IF:12.789] 2. Duality between the deconfined quantum-critical point and SPONSORED PROJECT the bosonic topological transition - Yan Qi Qin, Yuan-Yao He, • Spin liquids : Correlations …… disorder (collaborative Yi- project)

142 Satyanarayan Mukhopadhyay Assistant Professor (Joined on 15/03/2018)

(1) Electroweak symmetry breaking and the Higgs boson; (2) Particle dark matter and its search; (3) QCD jet properties and applications

During the period March 15-31, 2018, at IACS, I have primarily OTHERS DEPARTMENTAL PUBLICATIONS IN BOOKS/ worked on the study of Higgs boson couplings as a function BOOK CHAPTER/MONOGRAPHS JOURNALS : of the energy scale. Experimental determination of the scale 1. Dirac quasiparticles and Majorana modes in condensed dependence at high energy colliders using off-shell Higgs matter systems, Chap 13 in Topology and Condensed Matter production can probe new states, and the underlying dynamics, Physics by K. Sengupta, Edited by S. M Bhattacharjee, Mahan associated with electroweak symmetry breaking and the Higgs Mj, and Abhijit Bandopadhyay, Springer, Germany, 2017. sector. The results of our studies are summarized in the preprint 2. Book- Classical and Quantum Aspects of Gravity in Relation arXiv:1803.09751 [hep-ph]. to the Emergent Gravity Paradigm by S Chakraborty, Springer, OTHERS DEPARTMENTAL PUBLICATIONS IN JOURNALS : 2017. 1. Magnons in a two dimensional transverse field XXZ model- S 3. Book chapters - Boundary Terms of The Einstein-Hilbert Kar, K Wierschem and P Sengupta, Phys.Rev.B, 96, 045126 Action, Gravity and the Quantum by S Chakraborty, Springer, (2017).[IF:3.836] 43-59, 2017. 2. Explaining dark matter and neutrino mass in the light of TYPE- II Seesaw model-A Biswas and A Shaw, JCAP, 02, 029 (2018). OTHERS DEPARTMENTAL FELLOWS ATTENDED IN [IF:4.734] SYMPOSIUM/WORKSHOP : 3. R(D () ) anomalies in light of a Non-Minimal Universal Extra • S. Kar :(1) SNBNCBS, Kolkata, (2) SINP, Kolkata; (3) ISI, Dimension - A Biswas, S K Patra and A Shaw;Phys. Rev. D 97, Kolkata. 035019 (2018).[IF:4.734] • T K Bose : (1) IACS, Kolkata. 4. 1/r potential in higher dimensions - S Chakraborty and N • S Chakraborty : (1) Max-Planck Institute, Germany; (2) Dadhich, Eur. Phys. J. C., 78, 81 (2018).[IF:5.331] IIT Gandhinagar, (3) PRL, Ahmedabad; (4) SNBNCBS, 5. Buchdahl compactness limit for a pure Lovelock static fluid Kolkata; (5) ICTSc, Bangalore; (6) IIT Ropar; (7) IISER- star - N Dadhich and S Chakraborty; Phys. Rev. D,95, 064059 (2017).[IF:4.568] Mohali; (8) Presidency University, Kolkata. 6. Black Holes: Eliminating Information or Illuminating New • S Nandy : (1) IACS, Kolkata Physics? - S Chakraborty and K Lochan; Universe, 3, 55 (2017). • B Mukherjee : (1) IACS Kolkata [IF5.425] • A Haldar : (1) IACS, Kolkata 7. Entropy of a box of gas in an external gravitational field - • R Ghosh : IACS, Kolkata S Bhattacharya, S Chakraborty and T Padmanabhan, Revisited, Phys. Rev. D,96, 084030 (2017).[IF:4.568] 8. A novel derivation of the boundary term for the action in Lanczos-Lovelock gravity - S Chakraborty, K Parattu and T Padmanabhan; Gen. Relt. Grav.,49, 121 (2017).[IF:1.618] 9. Cosmological Implications of shift symmetric Galileon field - R Banerjee, S Chakraborty, A Mitra and P Mukherjee, Phys. Rev. D,96, 064023 (2017).[IF:4.568]

143

EMERITUS PROFESSORS

In course of our ongoing research on the history of chemistry in India we have been scrutinizing the contributions Prafulla Chandra Rây, the father of Indian chemistry. Rây was trained as an inorganic chemist in Europe and most of his research activities in India concerned problems in inorganic chemistry. However he had a latent interest in organic chemistry, specially synthesis and towards the end (1933-36) of his research career he and his group in the College of Science finally found time to explore the use of certain simple inorganic reagents for meaningful organic synthesis in the important areas of thioketonesand fluoroorganics. The reagents used in

the two cases are H2S plus HCl and TlF respectively. Thus Rây developed the first synthesis of red crystalline thiocamphor in good yield by treating camphor with hydrogen sulfide and hydrogen chloride gases in cold ethanol Animesh Chakravorty, as reported in 1934 in Nature. The same procedure afforded other bicyclic thioketones. Fluorination by TlF was used to generate fluoro-formate and FASc, FNA, FTWAS acetate esters, fluoroketones and other species. Better reagents and methods Emeritus Professor are now available to achieve the transformations but Rây’s works remain of historical importance as a notable step forward.

Molecular Transition Metal Chemistry, History of Chemistry, Popularization of Chemistry

Nanoglasses of compositions in the system Li2O – P2O5 - SiO2 with Li2O concentrations in the range 15 to 35 mole% were grown within mesoporous silica SBA-15. Nanocomposites with the glass composition 35 Li2O . 5

P2O5 .60 SiO2 showed an electrical conductivity of 3 X 10-4S . cm-1 at around room temperature. The activation energy was calculated to be 0.078eV. These materials are believed to be suitable for making solid state lithium ion batteries.

PUBLICATIONS IN JOURNALS 1. Synthesis of Lithium Superionic Conductor by Growth of a Nanoglass within Mesoporous Silica SBA – 15 Template, S. Chatterjee, M. Miah, S.K. Saha, D. Chakravorty, J. Phys. D : Appl. Phys. 51, 135301 (2018).[I.F. Dipankar Chakravorty, 2.588] FASc, FNA, FTWAS 2. Synthesis of Multilayered Structure of Nanodimenstional Silica Glass / Emeritus Professor Reduced Graphene Oxide for Advanced Electrochemical Applications, INSA Honorary Scientist A. Ghosh, M. Miah, C. Majumder, S. Bag, D. Chakravorty, S.K. Saha, Nanoscale10, 5539 (2018 [I.F.7.367]. & SERB Distinguished Fellow

SPONSORED PROJECT : Nanomaterials, • Distinguished Fellow (DST-SERB) multiferroics, nanocomposites

145 INTERPLAY OF ORBITAL CORRELATION AND RELAXATION IN ELECTRONIC PROPERTIES : Theoretical prediction of the core ionization potential (IP) poses a special challenge to any high level correlated theory. The magnitude of the core IP is shaped not only by the magnitude of differential correlation accompanying the core ionization process relative to the ground state correlation but also by the attendant large orbital relaxation. A precise description of the core ionization phenomenon requires proper quantitative modeling of not only differential correlation but also of the orbital relaxation. For an accurate description of the core IP of molecules containing one medium-heavy atom, the scalar relativistic effect tends to become important and in the series of example molecules of the general formula [XHn] with X as the non-hydrogen atom, we will present results using both non-relativistic (NR) and spin-free Dirac-Coulomb Hamiltonians. Since for the core IP, the orbital from which the electron is ionized is almost entirely of s-character, the spin-orbit effects are negligible. The spin-free DC Hamiltonian has been Emeritus Chair Professor studied in both a four-component and a two-component framework. The most widely accepted approach for the two component theories is the eXact Development and two-component one-electron (X2C-1e) Hamiltonian, and the spin-free Applications of Many-Body version of the X2C-1e Hamiltonian, the so-called SF-X2C-1e Hamiltonian, has also been extensively studied. Theories for Electronic The use of explicitly spin-free coupled cluster theories enables us to have a Structure unified treatment for both NR and the SF-4C/2C Hamiltonians. The effects of correlation and relativity are not additive, and non-perturbative theories Associates : are ideally suited for handling them together. We should also mention that (1) R. Kayal, JRF, (2) K Hazara, this is not only true for core IP processes but also for more complex processes JRF, (3) D Chakravarti, JRF leading all the way to multi-reference theories with relativistic Hamiltonians which are being actively investigated. We have also assessed the lowest order Quantum Electrodynamic (QED) correction to the core IP. We have Collaborators : estimated the importance of the spin-free part of the Gaunt term at the (1) A Shee,Univ of Michigan, ' D™{± ' ` interaction. We have also assessed the contribution of the spin-dependent Ann Arbor, USA; (2) T Saue, ¬D™{±' Paul Sabatier University; (3) than the spin-free part. B P Das, Tokyo Institute of Technology; (4) A Sen, MPI, LECTURE DELIVERED : Muelheim, Germany; (5) T (1) Keynote Lecture, QSCP-2017, Human, China, (2) Plenary Lecture, Helgaker, CTCC, Oslo; (6) APCTCC8, IIT Powai, (3) Invited lecture on Samarendranath Sen, Asiatic L Cheng, Johns Hopkins Society, Kolkata. University; (7) S Sen, CTCC, OSLO

146 OPICAL ANALOGUE OF EVENT HORIZON IN NONLINEAR PHOTONIC CRYSTAL FIBER : Following the demonstration of artificial event horizon in flowing fluid by Unruh, optical analogue of similar phenomenon could be achieved as argued by Leonhardt. Later in 2008 it was shown that an intense laser pulse propagating through a nonlinear photonic crystal fiber creates a relativistic refractive index (RI) perturbation due to optical Kerr effect. Simultaneously a propagating weaker probe pulse gets reflected in time domain when it tries to catch up the RI perturbation. It turns out that the reflection can be described as horizon phenomenon of a black hole. Recently it has also been reported that any intense RI front (RIF) is capable of scattering photons from weak incident signal or vacuum modes. It is not yet experimentally proved. We have tried to develop a numerical model to investigate such optical analogue system in silica glass based photonic crystal fiber (PCF) with a view to the possibility of experimental verifications. While creating optical analogue of event horizon in PCF it is observed that steep relativistic RIF Shyamal Kumar can generate deep UV characteristic spectrum which resembles to Hawking Bhadra spectrum. Exact numerical values of the parameters in order to design a Emeritus Professor (CSIR) possible experimental setup for observing such characteristic spectrum in laboratory have been estimated. Some of the results are shown in Fig 1. Study of intense Raman soliton dynamics in supercontinuum light with negative nonlinearity in photonic crystal fiber (PCF), and trapping of optical mode in 2D photonic crystals, (a) Time delay plot of propagating intense soliton (red) and reflected light (green) (b) plasmonic hollow core PCF Spectral density plot. Reflected probe pulse is observed at 923 nm. Output spectrum and twisted PCF at Dirac point. of a 30 fs Gaussian probe reflection from a 15 fs and a 7 fs input soliton pump pulses(c) Output spectrum (600-1500 nm)-blue box shows the positive norm Hawking mode (d) Spectrum from 321-326 nm to specify the change in amplified analogue Hawking mode. Associates : (1) Dr. R Chattopadhyay, RA (CSIR), (2) S Bose, SRA FIRST PRINCIPLES STUDY OF SILVER NANOCLUSTERS IN (CU),(3) S Mitra, SRA (JU), S AMORPHOUS SILICA SCAFFOLD : Majumder, External Student In silver (Ag) nanoparticles doped optical fiber a band of visible fluorescence (CU) light at the output is observed when the fiber is suitably pumped. In order to understand the local structure of the glass we tried to study through DFT. Perhaps the effect of amorphous host matrix like silica glass on silver clusters has not yet been investigated from first principles calculations. We optimize equilibrium structure of amorphous (SiO2)n clusters (n=8, 16, 24, 32, 40) with Ag atoms embedded in the interstitial space using DFT. Atomic clusters of silica size 8,16,24,32 and 40 were optimized using DFT implemented in DMol3 package to achieve the equilibrium geometry.Ground state structures of (SiO2)40Ag4is shown in the figure where Si and O atoms are represented as yellow and red spheres. The calculated average Si-O, O-O, and Si-Si pair distances of amorphous silica clusters are quite similar to the experimental values of 1.61Å, 2.66Å and 3.07Å respectively for bulk silica glass. During energy minimization of Ag doped silica clusters, self purification effect has been observed in small sized clusters. As the size of the silica scaffold increases, more number of Ag atoms can be accommodated inside the silica matrix. Target is to characterize bulk doped silica glasses.

147 LIST OF PUBLICATIONS : PATENT FILED/AWARDED : 1. Enhancement of spontaneous emission induced by all- • A process of fabrication of erbium and ytterbium-co- dielectric hyperbolic metamaterial at quasi-Dirac points - S doped multi-elements silica glass based cladding- Majumder and S K Bhadra; Optics Communications,393, pumped fiber for use as a highly efficient high power 113(2017).[IF:1.588] optical amplifier – M C Paul, A Dhar, S Das, M Pal and S K Bhadra; Indian Patent submitted : Ref. No : 2. Fabrication of ultra-high numerical aperture GeO2-doped 0038NF2018, March, 2018. fiber and its use for broadband supercontinuumgeneration -P H Reddy, A V Kir’yanov, A Dhar, S Das, D Dutta, M Pal, Y SPONSORED PROJECT : • Study of intense Raman solution ….. Dirac point (CSIR- O Barmenkov, J A Minguella-Gallardo, S K Bhadra and M ES Scheme) C Paul; Applied Optics ,56, 9315 (2017).[IF:1.650] LECTURES DELIVERED: 3. Dispersive shock mediated resonant radiations in Invited talk at (1) CK Majumdar Memorial Summer Workshop in defocused nonlinear medium -S.Bose, R Chattopadhyay and Physics, SNBNCBS, Kolkata; (2) Physics Colloquium, IIT-Kanpur; S K Bhadra, Optics Communications, 412, 226 (2018). (3) Physics Colloquium, North Bengal University; (4) Dept. [IF:1.588] Lecture Series, Electrical Engineering Department, NIT, Agartala.

Ph.D. DEGREE AWARDED : (1) T Biswas (CU)

In the course of the last academic year the following results were obtained.

STATISTICAL PHYSICS: An interesting result in statistical mechanics is the Jarzynski Equality which relates a non-equilibrium quantity to the equilibrium free energy(F) difference. In particular , if W(A-->B) is the work done in going from one equilibrium state A to another such state B, then the average,over all possible paths, of exp[-W(A-->B)]=exp[F(A)-F(B)] . It was recently noted that the fluctuations around the average value grow as expN where N is the system size making the equality impractical. We showed that in systems with long range correlation , N is replaced by its 2/3 power, making the equality more useful.

DYNAMICS: A) Classical : A WKB like analysis used by Mitra et al for studying Hawking Radiation was used to obtain the tunneling probability of the blocked wave Jayanta Kumar in a circular haydraulic jump. Bhattacharjee B) Quantum: Almost shape invariant propagation of a class of initial states was studied in Gross-Pitaevski Equation in a trapping potential. Instability Distinguished Emeritus zones for higher moments were determined for a quantum parametric Fellow (Joined on oscillator. 01.08.2017) LIST OF PUBLICATIONS : 1. Contrasting work fluctuations and distributions in systems with short-range Statistical Physics, and long-range correlations - T R Kirkpatrick, J K Bhattacharjee and J V Dynamical Systems Sengers; Phys Rev Lett, 119, 030603 (2017).[IF:8.462] 2. Dynamics of binary Bose-Einstein condensates via Ehrenfest like equations : Appearance of almost shape invariant states - S Pal and J K Bhattacharjee, Euro Phys JD71, 291 (2017).[IF:1.288] 3. Propagation of arbitrary initial wave packets in a quantum parametric oscillator: Instability zones for higher moments - S Biswas, R Chattopadhyay andJ K Bhattacharjee, Phys Lett, A382, 1202 (2018).[IF:1.772] 4. Estimating the boundaries of a limit cycle in a 2-D dynamical system using the renormalization group - A Dutta, D Das, D Banerjee and J K Bhattacharjee, Communication in Nonlinear Science and Numerical Simulation, 57, 47 (2018).[IF: 2.784] 5. Tunneling of a blocked wave in a circular hydralulic jump – J K Bhattacharjee, Phys. Lett, A381, 733 (2017).[IF:1.772]

148 A cobalt catalyzed selective remote C-4 alkylation of 8-aminoquinoline amides via C-H activation under irradiation with a CFL lamp in the presence of eosin Y at room temperature has been achieved. A series of pharmaceutically important C-4 quinoline amide-substituted ether derivatives has been obtained by this procedure. A convenient procedure has been developed for the synthesis of styrenylselenocyanates and benzoselenophenes from readily available styrenyl bromides by reaction with potassium selenocyanate in the presence of iodine under specified conditions. A series of both the compounds have been obtained by this procedure. A transition metal free iodine catalyzed reaction of aryl susbstituted 1,3-dienyl bromides with

KSeCN/K2S leading to the corresponding selenophenes and thiophenes has been developed. Using this procedure 2-(4-chlorophenyl)thiophene, a key intermediate for the synthesis of a melanin concentrating hormone receptor ligand involved in the treatment of eating disorders, weight gain, obesity, depression and anxiety has been synthesized.A highly chemoselective reduction of aryl, heteroaryl, acyl and sulfonyl Brindaban Chandra azides to the corresponding amines has been achieved by Fe(0) nanoparticles in Ranu water at room temperature in the absence of external hydride source. A simple procedure for the synthesis of organo-chalcogenides has been developed by the FASc, FNA reaction of aryl/heteroaryl amines with di-aryl/heteroaryldichalcogenides in the INSA Senior Scientist presence of tBuONO and Fe(0) nanoparticles. Green synthesis; Catalysis PUBLICATIONS IN JOURNALS by transition metals, 1.Cobalt catalyzed remote C-4 functionalization of 8-aminoquinoline amides with metal nanoparticles and ethers via C-H activation under visible light irradiation. Access to a-hetero-arylated heterogeneous supported ether derivatives – T Ghosh, P Maity and B C Ranu; Org. Lett., 20, 1011 (2018). metal salts; Visible light [IF:6.579] and ball milling mediated 2. Transition metal-free iodine catalyzed selenocayanation of styrenyl bromides and transformations an easy access to benzoselenophenes via intermediacy of styrenylselenocyanate – P Maity, B Paroi and B C Ranu, Org. Lett.,19, 5748 (2017).[IF:6.579] Associates: 3. Iodine catalyzed synthesis of chalcogenophenes by the reaction of 1,3-dienyl (1) B Majhi, SRF (CSIR, bromides and KSeCN/K S – P Maity and B C Ranu, Adv. Synth. Catal.,359, 4369 till November, 2017); (2) 2 (2017).[IF:5.646] P Maity, SRF (CSIR, till 4. Iron(0) nanoparticles mediated direct conversion of Aryl/Heteroaryl amines to November, 2017), (3) T chalcogenides via in situ diazotization - S Panja, P Maity, D Kundu and B C Ranu, Ghosh, SRF (jointly with Dr. Tetrahedron Lett.,58, 3441 (2017).[IF:2.379] Joyram Guin), (4) S Panja, 5. Highly chemoselective reduction of azides to amines by Fe(0) nanoparticles in JRF (jointly with Dr. Joyram water at room temperature – S Panja, D Kundu, S D Ahammed and B CRanu, Guin), (5) S Jalal (NPDF, Tetrahedron Lett., 58, 3457 (2017).[IF:2.379] joined in September 2017) SPONSORED PROJECT • INSA Senior Scientist Fellowship

Ph.D. DEGREE AWARDED : (1) Pintu Maity (JU); (2) Biju Majhi (JU).

LECTURES DELIVERED: Invited talk at (1) Sikim Govt. College, Gangtok; (2) JNCASR, Bangalore; (3) International seminar on GCET-2017, Punjab University, Chandigarh; (4) Rajib Gandhi National University, Itanagar, Arunachal Pradesh; (5) NIT, Silchar, Assam; (6) Sikkim Manipal Institute, Rongpo, Sikkim; (7) Asutosh College, Kolkata; (8) Central University of Punjab, Bhatinda, Punjab; (9) Bejoy Narayan Mahavidyalaya, Itachuna, Hoogly; (10) International Conference at Ural Fedral University, Russia; (11) KIIT, Bhubandswar, Odisha; (12) International Conference at Heritage Institute of Technology, Kolkata; (13) Bankura Sammilani College, Bankura; (14) Jhargram Raj College; (15) National Conference at Gorakhpur University, UP; (16) International Conference on Chemistry-Chem 07, Cairo University, Egypt

149 We have accomplished the first asymmetric synthesis of the marine polyketide (-)-gracilioether F starting from D-mannitol. The key step involves an intramolecular

1, 4–conjugate addition of a radical generated by Cp2TiCl mediated epoxy ring opening to a butenolide. The latter in turn was obtained from ring closing metathesis of appropriately constructed diallyl ether followed by oxidation of the resulting dihydrofuran. Ring closing metathesis of acyclic trienes which can provide either a carbocycle or an oxacycle has been investigated with Grubbs’ 1st generation catalyst. It was found that substituent on the alkene unit greatly influences the reaction course. Thus by putting substituent on one or two of the alkene units carbocycles such as cyclopentene, cyclohexene and cycloheptene as well as the oxa-cycles such as dihydrofuran, dihydropyran and oxepenes can be obtained exclusively. These ring systems are important structural units present in many natural products.

Subrata Ghosh PUBLICATIONS IN JOURNALS ! !% $`¬ ± ` # Š ™ FASc, FNA Ghosh J. Org. Chem.,82, 7675 (2017).[IF:4.849] 2. Influence of alkene substitutent in dictating the reaction course to form carbocycles INSA Senior Scientist or oxacycles during ring closing metathesis of acyclic trienes - R Datta and S Ghosh, Synthesis of complex J. Chem Sci.,129, 1873 (2017).[IF:1.298] natural products, chiron- based asymmetric synthesis, SPONSORED PROJECT development of new • INSA Senior Scientist Fellowship synthetic methodologies LECTURES DELIVERED: Associates: Invited talk at (1) Central Drug Research Institute; (2) Heritage Institute of Technology, (1) R Datta, RA-1 Kolkata; (3) NIT, Rourkela; (4) Jadavpur University; (5) IIT Guwahati, Guwahati; (6) (jointly with Prof. S Sinha) Visva Bharati University, Bolepur.

150 STRUCTURE-TRANSPORT CORRELATION IN MIXED NETWORK FORMER GLASSES: The correlation between network structure and transport properties of Li+ and Ag+

ions in Li2O-P2O5, Li2O-P2O5-TeO 2, Li2O-P2O5-MoO3, Ag2O-SeO2-TeO 2, AgI-

Ag2O-SeO2-TeO 2 glasses has been studied. The ac conductivity has been measured in a wide range of frequency and temperature and microscopic lengths of ion dynamics, such as characteristic mean square displacement () of mobile ‚}$A³#2$.·' in the framework of linear response theory. Fourier Transform Infrared and Raman spectra have been measured in order to study the glassy network structure. It has been observed that the concentration of non-bridging oxygen and structural transformation of different units play key role in the charge carrier dynamics. The time temperature superposition principle has been verified using the scaling formalism of the conductivity spectra. Aswini Ghosh, FNA, FASc Senior Professor (upto 30.11.2017, Dept of Solid State Physics) +$#PTF/BUJPOBM'FMMPX

2 2- Correlation of with oscillator strength of SeO3 unit Disordered superionic conductors, oxygen J. Phys. Chem. C, 121, 8738 (2017) ionconductors, nano- structured materials and polymer electrolytes: CHARGE CARRIER DYNAMICS AND RELAXATION IN SOLID POLYMER Structure, ion dynamics, ELECTROLYTES FOR ELECTROCHEMICAL DEVICES: relaxation dynamics and Charge carrier dynamics and relaxation in PMMA-based polymer electrolytes scaling; microscopic plasticized with different plasticizers and P(VdF-HFP)-BMIMBF4 ionic liquid based structure; crystallization polymer electrolytes doped with different TiO2 nanoparticles have been investigated kinetics in wide temperature and frequency ranges (10 mHz - 3 GHz) using different models taking the contribution of the electrode polarization into account.Strong coupling Associates: of ion dynamics with the segmental motion of polymer chain has been observed. (1) S Das, RA (up to Fraction of free anions and ion pair obtained from spectroscopic analysis has been 30.11.17), (2) T Dam (DST correlated with charge carrier dynamics of these electrolytes. Solid state lithium ion – NPDF), (3) A Palui, SRF, batteries and super-capacitors have been fabricated using these polymer electrolytes (4) P Pal, SRF (Inspire), (5) and suitable electrodes. Electrochemical performance of these devices indicates A Chatterjee, JRF (DST- their high cyclic ability, power density etc. project).

Conductivity spectra at different temperatures for polymer electrolytes J. Appl. Phys. 122, 015101 (2017)

151 PUBLICATIONS IN JOURNALS 5.Transport of oxygen ions in Er doped La Mo O oxide ion 1.Charge carrier dynamics in PMMA-LiClO4 based 2 2 9 polymer electrolytes plasticized with different plasticizers - conductors: Correlation with microscopic length scales - T Paul P Pal and A Ghosh, J Appl. Phys., 122, 015101 (2017). and A Ghosh, J Appl. Phys., 123, 045107 (2018).[IF:2.068] [IF:2.068] 6.Correlation between ion transport and network structure of Li O-P O glasses - A Chatterjee and A Ghosh, Solid State Ionics, 2.Mixed glass former effect in Ag2O -SeO2-TeO 2 glasses: 2 2 5 Dependence on characteristic displacement of mobile 314, 1 (2018).[IF:2.112] ions and relative population of bond vibrations - A Palui and A Ghosh, J Phys. Chem. C, 121, 8738 (2017). 7.Structure and dielectric properties of Ag2O-SeO2-TeO 2 mixed [IF:4.536] former glasses -A Palui and A Ghosh, J Non-Cryst. Solids, 482, 230 (2018).[IF:2.124] 3.Charge carrier relaxation in different plasticized PEO/

PVDF-HFP blend solid polymer electrolytes, S Das and A 8.Effect of Al2O3 nanoparticles in plasticized PMMA-LiClO4 based Ghosh -J Phys. Chem. B, 121, 5422 (2017). [IF:3.177] solid polymer electrolyte - P Pal, A Ghosh, AIP Conf. Proc., 1832, 110010 (2017).[IF: ] 4.Solid polymer electrolyte based on PVDF-HFP and 9.Dielectric relaxation of selenium-tellurium mixed former glasses ionic liquid embedded with TiO2 nanoparticle for electric double layer capacitor (EDLC) application - S Das and - A Palui, A Ghosh, AIP Conf. Proc., 1832, 070006 (2017).[IF: ] A Ghosh, J Electrochem. Soc.,164, F1348 (2017). [IF:3.259]

Ph.D. DEGREE AWARDED : (1) Arnab Palui (JU)

SPONSORED PROJECT • Dynamics of Charge ….. conducting glassed (DST) • J C Bose Fellowship

LECTURES DELIVERED: Invited talk at (1) St. Anne’s College, Oxford, UK (2) Birla Institute of Technology, Pilani

152 Technical Research Centre for Molecules and Materials

The Technical Research Centre (TRC) aims to utilize wide-ranging 2.Transparent and flexible photodetectors and methods scientific expertise of its faculty members for translational research thereof -KDM Rao, Somobrata Acharya, Mozakkar Hossain under the following four work packages : and Gundam Sandeep Kumar; applied for Indian Patent. •Work Package 1 : Quantum Materials for Application (in the process) •Work Package 2 : Materials for Energy and Environment 3. A reusable charge transfer based agrogel. Santanu •Work Package 3 : Polymers, Disordered, Soft and Nanobio Bhattacharya, Subham Bhattacharjee, Dipen Biswakarma, Materials for Devices, Diagnostics and Therapeutics Deepa Bhagat. Indian patent applied (application number •Work Package 4 : Molecules : Understanding, making and 201741016464) PCT NO. PCT/IN2018/050292 exploring commercial viability. 4. Method And Device For Rapid Detection of HearNPV. NUMBER OF PROJECTS/SCIENTISTS SUPPORTED :~ 20 Santanu Bhattacharya, Nilanjan Dey, Deepa Bhagat. Indian patent applied (application number 2017 41019790) RESEARCH PAPERS/JOURNAL OR BOOK PUBLICATIONS: 5. A kit for specific detection of SlNPV. Santanu 1.Nanosensors For Agricultural Pest Management Electronics Bhattacharya,Nilanjan Dey, Dipen Biswakarma, Deepa -Parikshit Moitra and Deepa Bhaga; For You, Agritech sector, Bhagat. Indian patent applied (application number March 2018. 201741040904) PCT NO. PCT/IN2018/050365 2.Reduction Responsive Nanovesicles Derived from Novel 6. DART, Bangalore “IGT Conjugated Antisense -Tocopheryl-Lipoic Acid Conjugates for Efficacious Drug Delivery Oligonucleotides for inducing exon skipping in Duchenne to Sensitive and Drug Resistant Cancer Cells -Bappa Maiti, Muscular Dystrophy.” S. Sinha, A. Shastry Krishan Kumar, Parikshit Moitra, Paturu Kondaiah and Santanu Bhattacharya; Bioconjugate Chem.,29, 255-266(2018). 3.Transparent, flexible silicon nanowire networks with seamless AWARDS: junctions for high performance photodetector applications - M 1.Received Best Poster Award in 9th Bengaluru India Nano Hossain, G Sandeep Kumar, B Prabhava S N Emmet, D Sheerin, 2017. D McCloskey, S Acharya, John J Boland and KDM Rao; DOI: 2.Early Career Research Award has been received from 10.1021/acsnano.8b01387,ACS nano(2018).[IF:13.9] Science andEngineering Research Board (SERB) for a 4.Parallel cracks from a desiccating colloidal layer under gravity funding of Rs. 45 lacs from 2018 to 2021. flow and their use in fabricating metal micro-patterns - I Mondal, A Kumar, KDM Rao and G U Kulkarni; Journal of Physics and MEDIA HIGHLIGHTS: Chemistry of Solids, 118, 232 (2018).[IF:] 1.Highlighted in India International Science Festival, 2017. 5. Structural Diversity in Poly(disulfide)s - Raju Bej, Jayita Sarkar 2.IEEE spectrum new articles: https://spectrum.ieee.org/ and SuhritGhosh; J. Polym. Sci. Part A: Polym. Chem., 56, 194- nanoclast/semiconductors/devices/silicon-nanowires- 202 (2018). could-enable-smart-solar-windows 6. Morphology Regulation in Redox Destructible Amphiphilic Block Copolymers and Impact on Intracellular Drug Delivery - Raju Bej, Jayita Sarkar, Debes Ray, Vinod K. Aswal and Suhrit Ghosh; Macromol. Biosci.,18, 1800057 (2018). PATENTS: 1.A Novel Turn-on Probe for Easy, Rapid and Accurate Quantification of Human Serum Albumin Present in Biological Fluids - Santanu Bhattacharya, Parikshit Moitra, Pranay Saha and Urmimala Bhattacharjee; Patent submitted through TIFAC, 2018.

153 EVALUATING NOVEL MATERIALS FOR AGRICULTURAL PEST MANAGEMENT Pheromone nanosensors were generated for the selective and quantitative detection of female sex pheromones of certain agricultural pests like Helicoverpaarmigera, Scirpophagaincertulas and Bactroceraoleae. The sensors were validated in a confined region in the presence of male and female pests and tomato plants which directly mimics the real environmental conditions. It has the ability to predict the prior infestation stage in an agricultural field. This recognition of pheromone molecules even before visual onset may alert the farmers to take necessary actions in a localized manner and thus this approach may be efficiently and economically used in agricultural farms to significantly reduce crop losses and the attendant financial losses.

DEVELOPMENT OF NOVEL MATERIALS FOR MODERN-DAY THERANOSTICS Multi-drugs resistance (MDR) is one of the major challenges faced by the cancer Parikshit Moitra patients during their prolonged chemotherapeutic treatments all over the world. Scientist - D In this regard, new reduction responsive nanovesicles, derived from -tocopheryl- lipoic acid conjugate, were synthesized and demonstrated for the delivery of anticancer drug, doxorubicin, both to the drug-sensitive and drug-resistant cancer cell lines under in vitro conditions. A novel turn-on probe was simultaneously developed for easy, rapid and accurate quantification of human serum albumin (HSA), present in different biological fluids, like urine, blood, serum, cerebrospinal fluid and pleural fluid, collected from patients suffering with different clinical manifestations like Systemic Lupus Erythematosus (SLE), Type 2 Diabetes Mellitus (T2DM), nephritic syndrome, nephrotic DM, antiphospholipid antibody syndrome (APLS) etc.

TRANSPARENT, FLEXIBLE SILICON NANOSTRUCTURED WIRE NETWORKS WITH SEAMLESS JUNCTIONS FOR HIGH-PERFORMANCE PHOTODETECTOR APPLICATIONS Optically transparent photodetectors are crucial in next-generation optoelectronic applications including smart windows and transparent image sensors. Designing photodetectors with high transparency, photoresponsivity, and robust mechanical flexibility remains a significant challenge, as is managing the inevitable trade- off between high transparency and strong photoresponse. In this project, we developed a scalable method to produce flexible crystalline Si nanostructured wire (NW) networks fabricated from silicon-on-insulator (SOI) with seamless junctions and highly responsive porous Si segments that combine to deliver exceptional performance. These networks show high transparency (-92% at 550 nm), broadband photodetection (350 to 950 nm) with excellent responsivity (25 A/W), optical response time (0.58 ms), and mechanical flexibility (1000 cycles). Temperature-dependent photocurrent measurements indicate the presence of K.D. Mallikarjuna localized electronic states in the porous Si segments, which play a crucial role Rao in light harvesting and photocarrier generation. The scalable low-cost approach based on SOI has the potential to deliver new classes of flexible optoelectronic Scientist - D devices, including next-generation photodetectors and solar cells. Associates : (1) M Hossain, JRF (TRC)

154 UPCONVERSION NANOPARTICLES FOR THERANOSTICS Up-conversion nanoparticles (UCNPs) have the unique feature of converting near-infrared light (NIR) to visible or ultraviolet (UV) light by sequential absorption of two or more photons. UCNPs of uniform size and morphology were synthesized in high-boiling organic solvents. UCNPs exhibit advantages such as higher optical penetration depth for biological tissues, longer lifetime fluorescence emission, lower background fluorescence, colourtunability and better optical stability. Additionally, large variety of surface modification methods can be adapted to make the nanoparticles compatible to the medium as well as trapping small molecules (drugs). These unique properties make them promising in various bioapplications, such as biological imaging, biomolecular recognition and targeted therapy. The group is working on three aspects of the UCNPs, 1) enhancement of fluorescence up-conversion efficiencies by epitaxial core-shell growth, sillica over coating and as well as by incorporating plasmonic structures, 2) nanoparticles absorbing in 800nm region to avoid thermal effects due to the absorption of 980nm light by water molecules, 3) controlled drug release. Shinto Varghese Scientist - D ELECTROSPUN NANOFIBERS FOR OPTOELECTRONICS Electrostatic fiber spinning is an efficient technique which utilises electric field Associate : (1) P Majumdar, to produce fine fibers with diameter ranging from few tens of nanometres to JRF (TRC) micrometers in size of polymers, ceramics, small molecules, and their combinations. The electrostatic repulsion between the surface charges continuously draws nanofibers from a viscoelastic solution. When the diameter of polymer fiber materials are shrunk from micrometers to submicrons to nanometers, there are several amazing characteristics such as very large surface area to volume ratio, flexibility in surface functionalities, and superior mechanical performance compared with any other known form of the material. Nanowires are 1D confined nanostructures; this geometry gives them unique properties that have been exploited in fabrication of electronic/optoelectronic devices. Confinement of light in these 1D structures is our point of interest to apply in optoelctronics devices such as organic light emitting nano-emitters, light emitting field effect transistors, amplifiers, lasers and high performance optical sensors.

TECHNOLOGY DEVELOPED / DEPLOYED / DEMONSTRATED / COMMERCIALIZED: 1.Technology for selective detection of female sex pheromone of certain agricultural pests like Helicoverpaarmigeraand Bactroceraoleaehas been developed. 2.Technology for transparent, flexible silicon nanostructured wire networks with seamless junctions has been developed for high performance photodetector applications. 3.Oligo-Guanidines composed of heterocyclic rings with hydrophobic/ lipophilic group at the N-terminal based cellular transporter has been developed for effective delivery of nonpenetrable cargos in vitro and in vivo.

155 START-UPS LAUNCHED / INCUBATED: Prof. Pradyut Ghosh has signed initially a memorandum of understanding with Environmental research group, R&D, Tata Steel on removal of cyanide and chloride from steel industry waste water to mitigate the wastewater pollutants, reduce water consumption and maintain sustainable recycling process. The cage complex receptor (active ingredient) is capable of complexing 70-80% free cyanide in steel wastewater within 10 minutes. This active ingredient had been used to treat Tata Steel waste water, in lab process. This particular molecular capsule has been made in large scale and delivered to TATA Steel for removal of toxic elements from water.

NUMBER OF BENEFICIARIES UNDER THE SCHEME: 20 Faculty members and about 25 research scholars

WORK PACKAGE NAME OF THE FACULTY MEMBERS

Overall Coordinator Prof. Santanu Bhattacharya Prof. Indra Dasgupta, Prof. Amitava Patra, Prof. Sugata Work Package-I. Quantum Materials for Application Ray, Dr. Subhadeep Datta and Dr. Devajyoti Mukherjee Prof. Amlan J Pal, Dr. Abhishek De, Dr. Ankan Paul, Prof. Work Package-II. Materials for Energy and Environment Somobrata Acharya and Dr. K. D. Mallikarjuna Rao Work Package-III. Polymers, Disordered, Soft Prof. Suhrit Ghosh, Prof. Siddhartha S Jana, Prof. Nikhil and Nanobio Materials for Devices, Ranjan Jana and Dr. Parikshit Moitra Diagnostics and Therapeutics

Prof. Tapas Chakraborty, Prof. Pradyut Ghosh, Prof. Surajit Work Package-IV. Molecules: Understanding, Sinha, Prof. Tapan Kanti Paine and Dr. Shinto Varghese making and exploring commercial viability

ANY OTHER SPECIFIC OUTCOME RELEVANT TO THE SCHEME: Nil

156 LeCTURES / SEMINARS & COLLOQUIA

009 Endowment Lectures

158 159 Dr. Subrata Chakraborty, Department of Organic Chemistry, Sustainable Catalytic Design Based on Metal Weizmann Institute of Science Ligand Cooperation

Dr. Soumen K. Samanta, Department of Chemistry and Supramolecular Self-Assembly : From Biochemistry University of Maryland Molecular Machine to Biomedical Application

Reactivity Enhancement of a Diphosphene by Dr. Anukul Jana, TIFR, Hyderabad Reversible N-Heterocyclic Carbene Coordination : Influence of N-Substituents

Transport of copper in Cells: Chemistry of a Professor Anthony Wedd, Melbourne University Copper ATPase

Interaction of hydrogen molecules with high Prof. Miclael Hirscher, MPI-Intelligent System, Stuttgart surface-area porous materials

Prof. Pierre H. Dixneuf, Institut des Sciences Chimiques de Rennes, Catalyzed C-H bond functionalisation: from France, January 10, 2018 ruthenium(II) to copper(I) catalysts

Prof. Dr. Christoph Schneider, Universität Leipzig, Germany, Catalytic Multicomponent Reactions for the January 10, 2018 Rapid Assembly of Molecular Complexity

Prof. Dr. Martin Oestreich, Institut fur Chemie, Germany, January Deceptively Simple Reactions with Silicon 10, 2018

Very Strong and Confined Acids Enable a Prof. Benzamin List, delivered Pof. U. R. Ghatak Endowment Lecture General Approach to Asymmetric Lewis Acid Catalysis

From Natural Product Synthesis to Molecular Prof. Arun Ghosh delivered Pof. U. R. Ghatak Endowment Lecture, Design Strategies to Combat HIV/AIDS Drug 10th January 2018 resistance

How RNase HI (E. coli) can be dictated to the Professor Jyoti Chattopadhyaya, Uppsala University, Sweden. site-selective hydrolysis of mRNA in the Chemical Science Colloquium, Feb 2, 2018 antisense/mRNA duplex?

Dr Arijit Mukherjee, Postdoctoral Associate, Department of Building upon SupramolecularSynthons: Some Chemical Engineering, Massachusetts Institute of Technology, USA Aspects of Crystal Engineering.

Prof. Yasuhiro Oshima, Tokyo Institute of Technology, Bimala Rotating and twisting molecules by intense Churn Law Memorial Lecture, Feb 19th, 2018 laser lights

Dr. Sotir Chervenkov, Max Planck Institute of Quantum Optics, Slowing down of molecules Munich, Germany, Feb 22nd, 2018

Theoretical and Computational Investigations Prof. Pradipta Bandyopadhyay, Jawaharlal Nehru University, in Biophysical Chemistry: diffusion in crowded Delhi, India environment and ionic solutions

Addressing Physicochemical features in Dr. Rumpa Pal, University of Bremen, Germany, Date – 4th molecular crystals via Chemical and Quantum September, 2017 Crystallographical methods

Probing, quantifying and freezing coherence Dr. Saikat Ghosh, IIT Kanpur, India, Date – 7th November, 2017 in an ensemble of atoms

160 161 162 163 164 165 166 167 Inter-Institute Collaboration

• Japan-India Collaborative Research Projects in Molecular Science with Institute for Molecular Science (IMS), Japan. • National Institute of Natural Sciences (NINS), Japan. • SERIIUS (Solar Energy Research Institute for India and the United States); Solar Energy Centre and MNRE. • IACS-BARC collaboration (IBIQuS) on Quantum Structure Research. • TWAS-IACS Postdoctoral Fellowship Programme. • Nodal institute for India in APCTP. • Private Collaborative Research Project with Unilever Research Centre, Bangalore. • Research agreement between IACS-TATA Steel Ltd. • Collaborative Research Project with Unilever Industries Pvt. Ltd., Mumbai. • Collaborative Research between IACS and Dystrophy Annihilation Research Trust, Bangalore. • Collaborative Research between IACS and CSIR-IICB Kolkata. • Integrated M.Sc. Ph.D. programme in Chemical Science between IACS and University of Calcutta. • Integrated M.Sc. Ph. D. programme in Biological Sciences between IACS and IIT-Kharagpur. • Integrated M.Sc. Ph.D. programme in Physical Science between IACS and Jadavpur University. • Co-Publishing Agreement between IACS and Springer (India) Pvt. Ltd.

168

Doctorates from the Institute during 2017-18

SL. NAME OF THE SUPERVISOR TITLE OF THE THESIS UNIVERSITY NO. SCHOLAR

BIOLOGICAL CHEMISTRY 01. Krishnendu Das P K DasSynthesis and Development of Self-Assembled Soft- Jadavpur Composites : Potentials in Biocatalysis and Biomedicine University CENTRE FOR ADVANCED MATERIALS 02. Subrata Maji S AcharyaFunctional Multi-Scale Pressure Induced Assemblies of Calcutta Nanomaterials at Two-Dimensional Interface University

DIRECTOR’S RESEARCH UNIT 03. Nilanjan Dey S Engaging Small Organic Molecules and Self-Assemblies Indian Institute of Bhattacharya for ‘Label-fre’ Recognition of Biologically Relevant Analytes Science 04. Mohini Kamra S Achieving Efficiency and Specificity in Multifarious Systems Indian Institute of Bhattacharya for Anti-Cancer Gene Therapeutics Science

ENERGY RESEARCH UNIT 05. Praloy Mondal D Das Nanocrystalline Silicon and Zinc Oxide Thin-Films : Synthesis, Calcutta Characterization and Optimization for Applications in nc-Si University Solar Cells

INORGANIC CHEMISTRY 06. Bijit Chowdhury P Ghosh Development of Mononuclear, Dinuclear, Trinuclear Calcutta Ruthenium (II) Complexes and Indole Based University Chemosensors for Phosphates and Fluoride 07. Saikat Santra P Ghosh Design, Synthesis and Characterisation of Various Jadavpur Rotaxane Molecules and Their Functional Studies University

08. Subal Dey A DeySynthesis, spectroscopy and catalytic studies of Calcutta bioinspired hydrogenase models University

09. Biswajit Mondal A DeyBio-inspired catalysis for water splitting Calcutta University

10. Sudeshna R Mondal Synthesis And Applications of Metal Organic Frameworks Calcutta Bhattacharya And Metallogels Using Pyrazole Based Ligands University

11. Abhijit Mallick H RathPlanar and Nonplanar Aromatic Heteroannulenes Jadavpur University

170 MATERIALS SCIENCE 12. Bipattaran A Patra Luminescent Metal Nanoclusters : Synthesis and Sensing Jadavpur Paramanik Applications University

13. Manoj Kr Barman A Patra Carbon dot based hybrid nanomaterials : synthesis and Jadavpur spectroscopic investigation University

14. Soubhik G P DasFunctionalization of Carbon Based Planar Calcutta Chakrabarty Nanostructure : A First-Principles Study University

15 Paramita Banerjee G P DasNanostructured Materials for Storage of Hydrogen and Calcutta Its Utilization in Fuel Cells : A First-Principles Study University

16. Biswajit Dalal S K DeMagnetic and Transport Properties of Perovskite-type Jadavpur Transition Metal Oxides University

17. V Kumari A Bhaumik Synthesis of porous metal oxides and sulfides and their Jadavpur gas storage, optoelectronic and catalytic properties University

18. Diptiman Dinda S K Saha Functionalization of Graphene Oxide for Water Jadavpur Purification and Sensing Applications University

19. Arindam Malakar S RayUsing Nanotechnology And Membrane Engineering For Calcutta Effective Desalination of Water University

20. Abhishek Nag S RaySpin-Orbit Coupling Driven Magnetism In Transition Calcutta Metal Oxides University

21. Nasrin Banu B N DevStructure, magnetic properties and their ion irradiatgion Calcutta induced University

ORGANIC CHEMISTRY 22. Jhuma Bhadra S Sinha Synthesis and Biological Evaluation of Cell Penetrating Jadavpur Phosphorodiamidate Morpholino Oligonucleotide University

23. Harlen Khatra S Sinha Chemical Modulating of Hedgehog Signaling Pathway Jadavpur University

24. Shamba R K Goswami Studies directed towards the Stereoselective Synthesis of Jadavpur Chatterjee Biologically Active Natural Products : Cytospolides and University Macrolactin 25. Pintu Maity B C RanuMetal Catalyzed and Visible Light Mediated Jadavpur Photocatalyzed Coupling Reactions towards Synthesis of University Useful Molecules 26. Biju Majhi B C RanuSynthetic Studies on C-H Functionalization of Activated Jadavpur Molcules University

27. Ritabrata Datta S Ghosh Synthesis of Carbocyclic Compounds Related to Natural Jadavpur Products of Terpenoid Origin University

171 PHYSICAL CHEMISTRY 28. Shyamolina D S RayStudy of Nonlinear Dynamics in some Model System Calcutta Ghosh University

POLYMER SCIENCE UNIT 29. Haridas Kar S Ghosh H-Bonding Driven Supramolecular Polymerization of Jadavpur Š`‰7`™! University

30. Anupam Saha T K Mandal Synthesis and Solution Properties of Polymer Jadavpur Bioconjugates University

31. Madhab Dule T K Mandal Imidazolium-based ionic liquids/polymers/poly(ionic Jadavpur liquid)s and their hybrids: synthesis and physical University properties

RAMAN CENTRE FOR ATOMIC, MOLECULAR AND OPTICAL SCIENCES 32. Tanmay Malakar A Paul Theoretical Exploration of the Chemistry of Iso-electronic Calcutta B-N Analogs of Alkene & Alkene University

33. Tushar Biswas S K Bhadra Study of Extraordinary Light Guidance in Plasmonic Hollow- Jadavpur Core Photonic Crystal Fiber (PCF) and in Speciality PCFs at University Dirac Point for Emerging Niche Applications

SOLID STATE PHYSICS 34. Arnab Palui A Ghosh Investigation of ion dynamics in mixed network former Jadavpur glasses University

35. Arup Chakraborty I Dasgupta Ab-initio Study of Novel Nano-structures Calcutta University

36. Saikat Basu R PaulStudying kinetic aspects of soft-matter and active Calcutta systems University

SPECTROSCOPY 37. T Banu A K Das Theoretical and Computational Studies of Hydrogen Jadavpur Storage Materials University

38. S M Pratik A Datta Modelling Organic Crystals by Solid-State Jadavpur DFT Calculations University

THEORETICAL PHYSICS 39. S De Sarkar K Sengupta Dynamical Aspects of Quantum Many-Body System Calcutta University

172 INDIAN JOURNAL OF PHYSICS

Indian Journal of Physics is a pioneering journal founded by Sir C V Raman in 1926, devoted to the publication of significant, original and current scientifc research results with ISSN is 0973-1458. It is the offcial publication of the Proceedings of IndianAssociation for the Cultivation of Science. Starting from January 2009, Indian Journal of Physics is being published incollaboration with Springer (www.springer.com/12648). Springer also distributes the print version of the Journal since January 2013. In 2017 (January - December) total 1003 No. of papers have been submitted by authors in online Editorial Manager System. During this period 12 issues of Vol. 91 have been published that contain 183 Nos. of research articles. Impact Factor for 2016 is 0.988.We have received Rs. 34, 75, 959-00 as income on A/c. of IJP (from M/s. Springer India Pvt. Ltd. for Volume 90, No. 1 - 12, January to December 2016). Acceptance rate of submitted articles for 2017 is 30.7%. Milestone : Editors’ Choice articles have been introduced that are freely accessible to all for a certain period of time. Scope : Astrophysics, Atmospheric & Space Physics / Atomic & Molecular Physics/ Biophysics/ Condensed Matter & Material Physics / General & Interdisciplinary Physics / Nonlinear Dynamics & Complex Systems / Nuclear Physics / Optics & Spectroscopy / ParticlePhysics / Plasma Physics / Relativity & Cosmology / Statistical Physics Abstract / Index Service : Other than Springer, this journal is abstracted /indexed in:Web of Science, SCOPUS, INSPEC, Chemical Abstracts Service (CAS), Google Scholar, Academic OneFile, Indian Science Abstracts, INIS Atomindex, INSPIRE, International Bibliography of Book Reviews (IBR), International Bibliography of Periodical Literature (IBZ), OCLC, SCImago, and Summon by Serial Solutions. Editor-in-Chief & Honorary Secretary Professor S Majumdar Scientific Editor : Dr S Deoghuria Lectures/Meetings/Conference/Workshop attended by the Staff : Dr. S. Deoghuria :Intl. Workshop on (1) IWTPLA, Satyajit Ray Film & Television Institute, Kolkata; (2) M.Phil/Ph.D. Scholars on Information Technology, Univ. of Calcutta.

173 Outreach Programme for the year 2017-18

IACS celebrated its Foundation Day on 29th July, 2017 in a befitting manner. Since July 29, 2017 fell on Saturday, the celebration programme was organized on 31st July, 2017. A Celebration Committee comprising of faculty, non-faculty and scholars was formed to design and organize the celebration programme involving all sections of people. Local school students were also invited to join the celebration programme and a good number of school students along with their teachers attended the programme. The programme started with a Popular Lecture by Professor Santanu Bhattacharya, Director, IACS. This was followed by Popular Lecture on “Quantum Tunneling : From Solar Fusion and Life Nanotechnology” by Professor B N Dev, Senior Professor, Materials Science Department, IACS. There was a Feature Film shown on Iswar Chandra Vidyasagar. There was also a Photography/Art Exhibition. After lunch break, in the afternoon session, there was another Popular Lecture on “Our Cosmic Consciousness” by Dr. Devi Prasad Duari, Director, Birla Planetarium followed by a Documentary Film show on Satyendra Nat Bose, directed by Ms. Shila Datta. The programme concluded with Award Giving Ceremony for awarding Best Photography/Art Exhibition and for Organized visit to some of sophisticated laboratories by a “Excellence in Service & Support Award” to non-faculty staff team of 12 students of 4th Semester M.Sc. (Biotechnology), members. Department of Biotechnology & Bioinformatics and a faculty member of Sambalpur University, Odisha on 26th July, 2017. The visiting programme included Registration, Welcome Address by Prof. SomobrataAcharya followed by Video Show on IACS. There was Scientific Demonstration and Visit to the various laboratories. Visiting students and faculty member were given a folder containing IACS Flyer, Stationeries and programme schedule. Feedback was taken from the participants in which they expressed their utmost satisfaction for having opportunity to visit premier research Institute in India like IACS. Organized visit to some physics laboratories by a team of 13 students of Physics Department along with 2 faculty members of Barrackpore Rastraguru Surendranath College on 13th February, 2018. They spent more than four hours at IACS and visited various Physics Laboratories. Prof. Somobrata Acharyaco-ordinated the programme.Their attendance were taken and they were handed over IACS Flyer, Stationeries and Programme Schedule. Feedback was also obtained from the participants which indicates that such programme inspires them to pursue higher studies in science in their careers. On request, students and faculty

174 members were handed over participation certificates also. In pursuance of the directives of the Department of Science & Technology, Government of India, IACS celebrated the National Science Day 2018 in a befitting way. An Organizing Committee was formed to oversee, organize the event in two days – 27th and 28th February, 2018 on the theme – “Science and Technology or a sustainable future”, as selected by the DST, Government of India for the National Science Day 2018. The organizing committee offered an opportunity for having discussion and interaction focused on a common issue of interest and consolidated suitable actions that might be taken. The Societal Component of IACS was involved in celebration of National Science Day 2018. The programme was inaugurated by Professor Soumitra SenGupta, Acting Director, on both the days followed by series of Lectures. The 27th February, 2018, the programme was primarily designed for college students and around 200 students from various colleges in and around Kolkata attended the whole day programme. Selected laboratories at IACS were also visited by college students in groups. For 28th February, 2018, the programme was for school students and around 180 school students in and around Kolkata attended the programme. There were Live Experimental Demonstration on Chemistry by Dr. Arindam Rana & his Team, on Biology by Dr. Deepak Sinha and Dr. Prasenjit Sen and on Physics by Dr. Bhupati Chakrabarti & his Team which were the primary attraction for the school students. Students and their accompanying faculty / teachers were provided with IACS Information Brochure, Stationeries, and Cap having IACS Logo and marking “National Science Day 2018”.

The programme on February 27, 2018 included Welcome Address by Professor Soumitra SenGupta, Acting Director, Lecture on “Raman Effect” by Professor Tapas Chakraborty, IACS, Lecture on “From Roots to Riches” by Dr. Mitali Chatterjee, PGMER and Laboratory Visits at IACS by college students. On February 28, 2018 the programme started with the Welcome Address by Professor Soumitra SenGupta, Acting Director, followed by Lectures on “The Allure of Blue” by Prof. Sayam Sengupta, IISER-Kolkata and on “Some Mathematical Gems from the Vedic Age” by Prof. Amartya Kumar Dutta, ISI-Kolkata. Asutosh Mookherjee Best Thesis award was conferred to Dr. Abhijit Bera on this auspicious occasion. The programme was concluded with Quiz Contest for School Students and IACS scholars were conducted the Quiz Contest so professionally and students were in rapt attention to chinch prizes through the Contest.

175 Activity Pertaining to Popularization of Science SUMMER SCHOOL

IACS organizes Summer School programme on basic COORDINATORS : sciences for school leaving students every year to attract Soumitra SenGupta and Koushik Ray, Dept. of Theoretical bright students in the field of study and research in Physics, IACS. basic sciences. Department of Theoretical Physics took the leading role in organizing the “XIXth IACS Summer S. SenGupta gave a eight-lecture course on “Quantum School on Basics Sciences”, during April 28 – May 19, Mechanics” for the school leaving students in the IACS 2017. Summer School on Basic Sciences. A total of thirty two students out of forty one applicants from various schools participated in the programme. K Ray gave four-lecture course on “Mathematical Physics” Eminent Scientists and teachers from various institutes for the school leaving students in the IACS Summer School delivered lectures and interacted with the students with a on Basic Sciences. goal to attract and motivate bright young minds towards basic sciences. D K Ghosh gave a two-lecture course on “Particle Physics” The format of the school was: for the school leaving students in the IACS Summer School 1. Short lecture courses on basic areas of science on Basic Sciences. emphasizing the conceptual aspects. 2. Special lectures on frontier research areas. S Datta: Presented a lecture on “Effect of Dimension” at XIXth I.A.C.S. SUMMER SCHOOL ON BASIC SCIENCES, 3. Interactions with experts from other disciplines. 2017. 4. Interactive sessions with the students. 5. Film shows on scientists and scientific discoveries. The students participated with great interest. They interacted with all the faculty members and among themselves with great enthusiasm. Many students expressed that they were deeply motivated towards the study of basic sciences.

176 Lecture & Article for Science Popularization

• Prof. Suhrit Ghosh delivered two popular scientific Majumdar Memorial Workshop, S.N. Bose National Centre lectures in Academy Workshop in Saldiha College, (May, 2017). Bankura. • Half a Century of Density Functional Theory and its role in • Dr. A Das participated in conducting in-house scientific materials simulation -G.P. Das, Seminar in University of programme for school and college going students as a Arizona (April 2017). part of the National Science Day Programme, 2018 at • Debashree Ghosh delivered a lecture at Refresher Course IACS. in Chemistry at Indian Women Scientist Association • Bridging the ‘Valley of Death’ in Energy Science and Headquarters, Mumbai, Dec 2017. Technology -G.P. Das, in one-day Seminar on Materials • Tanusri Saha-Dasgupta delivered lectures at Academy Design and Scopes of higher study and Academic workshop on “Modern trends in chemistry and physics” in / government / industrial collaborations, SRM-IST, Bhairab Ganguly College. Chennai (February, 2018) • A student outreach program organized by Raja Paul during • Designing Materials for Hydrogen Storage: from Bulk to “Celebration of Foundation Day of IACS 2017” Nano - G.P. Das, American University of Sharjah (AUS), College of Arts & Science (November 2017) • Satrajit Adhikari delivered lecture entitled as “Electronic Structure of Molecules” for under and post graduate students • Emergence of 2D Materials and Devices - G.P. Das, at Rishi Bankim Chandra College, Naihati, North 24 Presidency University, Kolkata (August, 2017) parganas, West Bengal. • R Paul: A student outreach program organized during • D Mukherjee: Visit of undergraduate Physics students from “Celebration of Foundation Day of IACS 2017” From Jogesh Chandra Chaudhuri College to IACS /Convener: Dr. Wave Function to Electron Density - G.P. Das, C.K. Devajyoti Mukherjee

Post-BSc Integrated PhD Program in Chemical Sciences (IntPCS)

In an effort to foster academic cooperation between Research FACULTY MEMBERS PARTICIPATED IN TEACHING DURING Institute and Universities, IACS has been conducting a 2017-18: Post-B.Sc Integrated Ph.D. Programme in Chemical Sciences From IACS (IntPCS) since the academic session 2005-2006. The primary DEPARTMENT OF PHYSICAL CHEMISTRY: objective is to offer research oriented multi-disciplinary Prof. D.S.Ray, Prof. T.Chakraborty, Prof. Satrajit Adhikari, Dr. Biman courses, including not only the basics of Organic, Inorganic, Jana Physical and Analytical Chemistries but also covering modern areas of Material Science and Biology which bear a DEPARTMENT OF INORGANIC CHEMISTRY: close kinship and an almost compulsory overlap with these Prof. Pradyut Ghosh, Prof. Tapan Kanti Paine, Prof. Abhishek Dey, traditional branches. Prof. Somdatta Ghosh Dey, Dr. Harapriya Rath In a broad perspective the design of the Integrated Programme DEPARTMENT OF BIOLOGICAL CHEMISTRY: is largely equipped to fulfill the requirements of a modern Prof. Rupa Mukhopadhyay, Prof. Siddhartha Jana, researcher in terms of his/her familiarity with the current DEPARTMENT OF SPECTROSCOPY development of experimental and theoretical Chemical Dr. Ayan Dutta , Dr. Ravindra Pandey Sciences. From the session 2011-2012, Post B.Sc. Integrated Ph.D. Programme in Chemical Sciences at IACS is being GUEST FACULTY MEMBERS: run based on an MOU between IACS and the University Prof. S. P. Bhattacharyya, Retired Faculty Member, Department of of Calcutta (CU), the Programme enjoys its affiliation and Physical Chemistry, IACS collaboration with the said University. Prof. R. Chakraborty, Retired Faculty Member, Department of Chemistry, Presidency University RELEVANT DATA FOR THE YEAR 2017-18 Prof. Sanjib Bagchi, Retired Faculty Member, Department of Students applied for the course: 374 Chemistry, Burdwan University Appeared for exam: 340 Prof. Sanjib Ghosh, Retired Faculty Member, Department of Qualified for interview: 49 Chemistry, Presidency University Appeared for interview: 43 Joined the course: 10

177 Post-BSc Integrated Ph.D Program in Biological Sciences (IntPBS)

Integrated MSc-PhD in Chemical and Molecular Biology [A 2+5 Year 2 (students shared between IACS and IIT Kharagpur) years’ teaching-cum-research program] started in partnership Semester III: between Indian Association for the Cultivation of Science (IACS) 3 compulsory elective (theory) courses + Project and Indian Institute of Technology at Kharagpur from 2016. Available electives: The course objectives have been (a) to provide the participating NANOSCALE ENGINEERING OF BIOLOGICAL SYSTEMS students with an exposure to the modern aspects of biological MODERN GENETICS sciences as first-degree experience and (b) to provide the students IMMUNOTECHNOLOGY with the opportunity to acquire skills and expertise relevant to their ELECTROANALYSIS AND SENSOR specific research interests under closely monitored and focused BIOSYNTHESIS OF SECONDARY METABOLITES supervision. PROTEOMICS BIOSTATISTICS COURSE STRUCTURE AND COURSE WORKS FUNCTIONAL MATERIALS IN BIOLOGY BEING OFFERED IN THIS PROGRAMME: PHARMACOKINETICS AND PHARMACOGENOMICS DRUG DESIGN AND DEVELOPMENT Year 1 BIOTRANSFORMATION IN ORGANIC CHEMISTRY Semester I: 6 theory courses and 1 laboratory course (at IACS) CHEMISTRY OF NATURAL PRODUCTS Subject No Subject Name L-T-P Credit MEMS & BIOSENSORS BS41003 BIOPHYSICAL AND BIOCHEMICAL 3-1-0 4 Semester IV: 1 Elective and Project leading to PhD METHODS BS40005 CARBOHYDRATES AND LIPIDS: 3-0-0 3 Available electives: STRUCTURE AND FUNCTION BIOMATERIALS BIOLOGICAL IMAGING: IN VIVO AND IN VITRO BS49001 CHEMICAL BIOLOGY LABORATORY 0-0-6 4 DRUG DELIVERY AND GENE THERAPY NEUROPHYSIOLOGY BS40003 NUCLEIC ACIDS: STRUCTURE AND 3-0-0 3 STEM CELL BIOLOGY AND THERAPY FUNCTION MOLECULAR IMAGING BS41001 CELL AND DEVELOPMENTAL 3-1-0 4 CANCER BIOLOGY BIOLOGY Years 3-7: Research work towards PhD BS41005 COMPUTATIONAL BIOLOGY AND 3-1-0 4 BIOINFORMATICS Co-ordinators: Prof. Rupa Mukhopadhyay and Prof. Siddhartha S Jana (Department of Biological Chemistry) BS40009 MOLECULES OF LIFE & FUNDAMENTALS 2-0-0 2 Instructors involved in first semester (Aug-Dec) 2017: OF LIVING SYSTEMS From IACS: Prof. Arindam Banerjee, Prof. Prasanta K Das, Prof. Rupa Mukhopadhyay, Prof. Siddhartha S Jana, Semester II: 5 Theory and 2 Laboratory courses (at IIT Kharagpur) Dr. Deepak Sinha, Dr. Prosenjit Sen, Dr. Benubrata Das Subject No Subject Name L-T-P Credit (Department of Biological Chemistry) Prof. Surajit Sinha, Dr. Rajib Goswami, Dr. Jyotirmoyee BS41004 ADVANCES IN PROTEIN STRUCTURE 3-1-0 4 Dash, Dr. Joiram Guin (Department of Organic Chemistry) AND FUNCTION BS49002 CELL BIOLOGY LABORATORY 0-0-3 2 Prof. Tapas Chakraborty (Department of Physical Chemistry) Dr. Ayan Dutta (Department of Spectroscopy) BS41002 STRUCTURE DETERMINATION OF 3-1-0 4 BIOMOLECULES Dr. Raja Paul (Department of Solid State Physics) BT69016 RECOMBINANT DNA TECHNOLOGY 0-0-3 2 External Instructors: Dr. Sandip Paul (CSIR-IICB, Kolkata), LABORATORY Prof. Biswadip Das (Jadavpur University), Prof. Anirban Bhattacharya (Calcutta University) BT60002 RECOMBINANT DNA TECHNOLOGY 3-1-0 4 Facilities created: A dedicated lecture hall for taking the theory classes and a dedicated teaching laboratory for the BS40004 INFECTION AND IMMUNITY 3-0-0 3 practical classes have been developed. Program Performance Indicators: BS40002 MOLECULAR MICROBIOLOGY 3-0-0 3 1. Number of applications: 98 in 2016 (application

178 fee Rs. 500; minimum cut-off marks 55%), 121 in 2017 2. Rate of eligibility for PhD: Out of seven candidates who (application fee Rs. 1000 for unreserved candidates and Rs. enrolled in 2016 (the first batch), four have qualified to be 500 for reserved candidates; minimum cut-off marks 60% directly absorbed in the PhD programme, as per their third (unreserved)/55% (reserved)), 199 in 2018 (application fee semester CGPA. No students (seven enrolled in 2016, and ten Rs. 1000 for unreserved candidates and Rs. 500 for reserved enrolled in 2017) left the programme in a pre-mature manner categories; minimum cut-off marks 60% (unreserved)/55% within the last two years (i.e., considering the first two batches). (reserved)) - an increase in the number of applications received 103% compared to that in 2016, and 65% compared to that in 2017.

INTEGRATED M.SC. - Ph.D PROGRAM IN PHYSICAL SCIENCES (IntPPS)

This programme has been launched during the academic Centre for Mathematical,Computational and Data Science session 2016-2017 in collaboration with Jadavpur Prof. Tanusri Saha-Dasgupta, Dr. Samik Basu University. The primary objective of this programme is to offer Department of Materials Science. Physics (Core) as well as research oriented multidisciplinary Prof. Bimalendu Deb courses in Physical Sciences for the first two years as a part Technical Research Center of requirement of M.Sc degree, followed by direct admission Dr. Kunala Durga Mallikharjuna Rao, of the students (fulfilling required criteria) to the Ph.D programme GUEST FACULTY MEMBERS: The M.Sc. degree will be awarded by the Jadavpur University Prof. J K Bhattacharjee, , Distinguished Emeritus fellow, as per MOU signed between IACS and JU. IACS, After successful clearance of a National level written test and Prof. Parthasarathi Majumdar, Professor, RKMVU, Belur interview 11 students got admitted to this programme in the Prof. Amit Roy, Former Director, Inter-University Accelerator year 2017-2018 and successfully continuing their course. Centre, New Delhi, Relevant data for the year 2017-18 Students applied for the course: 286 Appeared for examination: 266 Called for interview: 40 Appeared for interview: 40 Joined the course: 11

INFRASTRUCTURAL FACILITIES: Class rooms with all facilities (such as projector, laptop etc) has been dedicated for the IntPPS Programme. A Physics Laboratory with several General Physics experimental set ups has been developed. A fully functional Electronics and a Computer Programming laboratory. Faculty members participated in teaching during 2017-18:

IACS FACULTY MEMBERS: Department of Theoretical Physics Prof. Soumitra Sengupta, Prof. Utpal Chattopadhyay, Prof Dilip Kumar Ghosh, Prof. Koushik Ray, Prof. Sourov Roy, Prof. Pushan Majumdar , Dr. Arnab Das Department of Solid State Physics Prof. Indra Dasgupta, Prof. Subham Majumdar, Dr. Raja Paul, Dr. Subhadeep Datta, Dr. Devajyoti Mukherjee, Dr. Mintu Mandal

179 Courses offered for Ph.D students during April 2017 to March 2018

AUTUMN SEMESTER : JULY – DECEMBER, 2017

SL. COURSES INSTRUCTORS NO. OF CREDIT NO. STUDENTS POINTS

01 Statistical Mechanics-II Prof. Raja Paul 2 3

02 Nanoscale Materials Prof. Subodh Kumar De 29 3

03 Principles of Fluorescence Spectroscopy Dr. Prasant Chandra Singh 30 3

04 Condensed Matter Physics-II Prof. Krishnendu Sengupta and Dr. 5 3 Arnab Sen

05 Quantum Field Theory-I Prof. Koushik Ray and Prof. Pushan 3 3 Majumdar

06 Molecular Spectroscopy Prof. Tapas Chakraborty and Dr. 13 3 Ravindra Pandey

07 Topics in Inorganic Chemistry Prof. Pradyut Ghosh, Dr. Abhishek 10 3 Dey, Dr. Somdatta Ghosh Dey and Dr. Harapriya Rath

SPRING SEMESTER : JANUARY – JUNE, 2018

SL. COURSES INSTRUCTORS NO. OF CREDIT NO. STUDENTS POINTS

01 Concept, Model & Techniques in Prof. Tapan K Paine, Prof. Parthasarathi 7 3 Inorganic Chemistry (Code:07) Dastidar, Prof.Somobrata Acharya

02 Advanced Solid State Physics Prof. Tanushree SahaDasgupta 1 3

03 Advanced Quantum Mechanics Prof. Satrajit Adhikari and Dr. 1 3 Debashree Ghosh 04 Particle Physics and Standard Model Prof. Dilip Kumar Ghosh 1 3

05 Quantum Field Theory-I Prof. Utpal Chattopadhyay 2 3

06 Light Matter Interactions Prof. Bimalendu Deb 6 3

07 Gravitation and Cosmology Prof. Soumitra Sengupta 4 3

08 Nanoscale MaterialsDr. Mintu Mandal 9 3

09 Advanced Asymmetric Synthesis & Dr. Joyram Guin 8 3 Catalysis 10 General Polymer Chemistry Prof. Arun Kumar Nandi and 21 3 Dr. Sudip Malik 11 Basic Polymer Chemistry Prof. Suhrit Ghosh and Dr. Anindita 17 3 Das 12 Chemistry & BioChemistry of Micro- Dr. Benu Brata Das 12 3 Organisms

180 IMPLEMENTATION OF THE OFFICIAL LANGUAGE POLICY IN THE ASSOCIATION

During the financial year 2017-2018, the Association has The Association observed Hindi Pakhwara from 14.09.2017 successfully implemented Official Language policy of the to 11.10.2017 and it began with the Hindi Diwas organized Government of India in full spirit with the help of the Hindi on 14.09.2017. A Hindi Workshop was organized on Cell consisting of Acting Registrar as in-charge, Mr. M.L.Soni, 15.09.2017 as mentioned above for the staff. During Assistant Registrar (Adm.) as Co-ordinator and Mr. Prem the Hindi Pakhwara a meeting of the Official Language Sagar Singh as Part-Time Hindi Officer and two committees; Implementation Committee was also held on 18.09.2017. One Official Language Implementation Committee and Finally, the Institute celebrated closing ceremony of the another Official Language Advisory Committee, both ‘Hindi Pakhwara’ on 11.10.2017. The Institute participated Chaired by the Director/Deans. The Advisory committee also in two half yearly meetings of the Town Official Language has two external members; One Senior Hindi Officer, CSIR- Implementation Committee, Kolkata Office-2 held at CGCRI, Central Glass and Ceramic Research Institute (CGCRI), Kolkata. Joint Rajbhasha Meeting and Prize Distribution Kolkata and other Hindi Officer, CSIR-Indian Institute program for East and Eastern Zone conducted by Ministry of Chemical Biology, Kolkata besides internal members. of Home Affairs, Department of Rajbhasha, Government of The implementation Committee met on 19.05.2017, India was also attended by an officer of the Institute held on 18.09.2017 and 12.03.2018 during the year and gave 10.03.2018 at Patna. their valuable suggestions for effective use of the Official Language in the Institute. Hindi workshops were organized on 23.06.2017, 15.09.2017 and 10.01.2018.

181 Extramural Funding

SL. NAME OF THE PROJECT/SCHEME/AWARD FUNDING AUTHORITY, DATE OF DATE OF SANCTION NO. SANC-AWARD COMM- TERMINATION AMOUNT TION NO., DATE, ENCEMENT CATEGORY 001 Optimization of Device Specification for Non- Samsung Elec. Co. 38838 N/A Rs.27,02,920/- Volatile Organic Memory, PI: Dr. A.J. Pal, SSP Ltd., Japan; Ag. May 2016 Date: 01.03.06, Consultancy Project. 002 IACS-BARC Initiative for Research in Quantum BARC and DAE; 17.04.2009 31.03.2017/ Rs. 7,00,00, Structures (IBIQuS), PI: Prof. B.N. Dev; Co. PI: BARC/ Accts/Works/ 5 years 31.03.20183 000/- ‘+10.40 MoU/266/2009, crore (for Prof. G.P. Das, M. S. 1.03.2017/3 13.04.09; extension Collaborative Proj. 1.03.2018 periods) 003 Quantum simulation of ultracold gases (Bose, DST; SR/WOS-A/PS- 01.04.2011 31.03.2014 Rs.19,85,000/- Fermi and dipolar), PI: Dr. Sumita Dutta, TP 32/2009, 22.02.11; 3 years Grants-in-aid.

004 Development of a catalyst for oxygen electrode DST; SR/WOS-A/ 23.12.2011 22.12.2014 Rs.23,80,000/- for photo-electrolysis of water for the production CS-69/ 2010(G), 3 years. of hydrogen, PI: Dr. Sudeshna Mukherjee, MS 29.09.11; Grants-in- aid. 005 Conducting polymer nanostructures for DST; SR/WOS-A/ 01.04.2012 31.03.2015 Rs.18,45,000/- Chemical sensing: Theoretical simulation, PI: CS-77/ 2011©, 3 years Dr. Rupali Gangopadhyay, CAM 12.03.12; Grants-in- aid. 006 Probing structure-property relationship in terms DST; SR/WOS-A/ 28.05.2012 27.05.2015 Rs.23,60,000/- of dynamics of amphiphilic block copolymer CS-97/2011 (G), 3 years micelle by Forster resonance energy transfer 09.05.2012; Grants- (FRET) technique, PI: Dr. Priya Rajdev PSU in-aid. 007 Award of Swarnajayanti Fellowship to Dr. DST; DST/SJF/ 14.08.2012 13.08.2017 Rs.2,20,50,000/- Narayan Pradhan, M.S. entitled “Exploring CSA-01/2010- 5 years 2011, 16.05.2012; doped semicon-ductor nanocrystals” Swarnajayanti Scholarship Reserve Fund. 008 Decay dynamics of nanostructured materials DAE, BRNS; 24.08.2012 23.08.2017 Rs.1,00,00,000/- for photonic applications, PI: Prof. Amitava 2012/21/05- 5 years BRNS/1095, Patra, M.S. 12.07.2012; Grants- in-aid. 009 Indo-US/US-India Consortium for Solar Energy JCERDC-SERIIUS; 19.12.2012 18.12.2017/ Rs.4,55,00,000/- Research Institute for India and The United IUSS-TF/JCERDC- 5 years 31.03.2018 SERIIUS/2012 States (SERIIUS); PI: Prof. A.J. Pal,SSP 22.11.2012; Grants- in-aid. 010 Plasmonic enhancement for Quantum Dot RNTBCI; A.Date: 41183 Sept. 2013 Rs.16,00,000/- based solar cells; PI: Prof. A.J. Pal, SSP 26.11.12; 1 year Consultancy Project.

011 Developing functional metallogels; PI: Dr. SERB, SR/S1/IC- 17.06.2013 16.06.2016 Rs.51,19,000/- Parthasarathi Dastidar, OC 68/2012; Grants-in- 3 years aid

182 SL. NAME OF THE PROJECT/SCHEME/AWARD FUNDING AUTHORITY, DATE OF DATE OF SANCTION NO. SANC-AWARD COMM- TERMINATION AMOUNT TION NO., DATE, ENCEMENT CATEGORY 012 Design, synthesis and catalytic applications SERB, SR/S1/ 04.07.2013 03.07.2016 Rs.42,79,000/- of functionalized materials having nanoscale IC-61A/2012, 3 years porosity for deriving biofuels from biorenewable 27.05.2013, Grants- sources, PI: Prof. A. Bhaumik, MS in-aid 013 Theoretical study of reaction mechanisms SERB, SB/S1/ 16.07.2013 15.07.2016 Rs.20,10,000/- for decomposition of organophosphorus PC-79/2012, 3 years 14.06.2013; Grants- compounds PI: Dr. A.K. Das, Spectroscopy in-aid

014 Award entitled “DNA damage control in Wellcome trust India 01.09.2013 31.08.2018 Rs.3,44,22,520/- the nucleus and mitochondria: exploring Alli-ance, DBT, 5 years IA/I/13/1/500888, new pathways and novel post-translational 19.08.2013; Grants- regulations” to Dr. Benu Brata Das, PC in-aid. 015 Exploring various self-complementary SERB; SB/FT/ 12.12.2013 11.12.2016 Rs.25,00,000/- H-bonding units for supramolecular assembly CS-098/2012, 3 years 13.11.2013, Grants- of organic semiconductors, PI: Dr. D. Basak, in-Aid. PSU 016 Molybdenum containing enzymes: Bioinspired IFCPAR; IFC/A/5105-2 28.03.2014 27.03.2017 Rs.28,35,358/- peptidic catalysis for CO2 reduction; Dr. Surajit /2014/573, 3 years 28.03.2014; Sinha, OC Collaborative Project.

017 Structural and functional models for the active SERB; SB/S1/ 28.05.2014 27.05.2017 Rs.51,00,000/- sites of carbon monoxide dehydrogenases, PI: IC-43/2013, 3 years 13.05.2014, Grants- Dr. Amit Majumdar, IC in-aid.

018 Indo-UK-To study gelatin mechanism of self- DST; DST/INT/ 08.05.2014 07.05.2016 Rs.11,64,000/- assembling peptide based new hydrogelators UK/P-64/ 2014, 2 years 09.04.2014; Grants- for the application of sustain release of drugs, in-aid. Prof. Arindam Banerjee, BC 019 Bio-inspired and bio-chemical catalytic SERB; SB/S1/IC- 17.06.2014 16.06.2017 Rs.1,06,90,000/- surfaces, PI: Dr. Abhishek Dey, IC 25/2013, 27.5.2014; 3 years Grants-in-aid.

020 DST-UKIERI/Multifunctional hybrid DST; DST/INT/ 02.06.2014 01.06.2016 Rs.29,44,400/- nanocomposites for …….. From water, PI: UK/P-82/2014, 2 years Prof. Asim Bhaumik, MS 29.04.2014; Grants- in-aid. 021 Recyclable magnetic nanoparticles supported DST; SR/NM/NS- 30.09.2014 29.09.2017 Rs.44,09,600/- catalysis for enantioselective synthesis; PI: Dr. 1034/2011 (G), 3 years 19.09.14; Grants-in- Jyotirmayee Dash, OC aid.

022 Studies on Mettallogelation Using Pyrazole SERB; SB/EMEQ- 13.10.2014 12.10.2018 Rs.47,20,000/- Based Ligands; PI: Dr. Raju Mondal, IC 301/2014, 15.07.14; 4 years GIA.

183 SL. NAME OF THE PROJECT/SCHEME/AWARD FUNDING AUTHORITY, DATE OF DATE OF SANCTION NO. SANC-AWARD COMM- TERMINATION AMOUNT TION NO., DATE, ENCEMENT CATEGORY

023 Hydrogen bonding mediated nano structured DST; SR/NM/NS- 01.10.2014 30.09.2017 Rs.41,97,295/- supramolecular assembly of donor acceptor 1052/2013 (G), 3 years 25.09.14, GIA. building blocks; PI: Dr. Suhrit Ghosh, PSU

024 Aldehyde C-H bond activation for the SERB; SB/S5/GC- 13.10.2014 12.10.2017 Rs.46,00,000/- construction of C-C bond under green reaction 08/2014, 03.09.14; 3 years GIA. protocols; PI: Dr. Joyram Guin, OC

025 Study of action filament conformational SERB; SBSO/ 16.10.2014 15.10.2017 Rs.49.50,0000/- dynamics, PI: Dr. Deepak Kumar Sinha, BC BB-101/2013 3 years 19.08.2014; GIA

026 Development of p-type transparent conducting DST; DST/INT/ 29.10.2014 28.10.2017 Rs.48,08,099/- oxide film, PI: Prof. D. Basak, SSP UK/P-64/ 2014, 3 years. 09.04.2014; Grants- in-aid.

027 INSA Senior Scientist entitled Supported Metal INSA; SP/ 14.01.2015 13.01.2018 Rs.13,80,000/- Salts and Metal Nanoparticles as Green SS/2012/1654, 3 years 04.10.2012; GIA. Catalyst, PI: Prof. B.C. Ranu, OC

028 Self Sorting Donor and Acceptor Assemblies, IFCPAR; DST- 28.05.2014 27.05.2017 Rs.76,78,221/- PI: Dr. Suhrit Ghosh, PSU ANR2014/ Engg-I/ 3 years SODA/2136, 17.12. 2014, Collaborative Project 029 Study of cell-cell interaction mediated via DBT; BT/PR6995/ 16.01.2015 15.01.2018 Rs.98,00,000/- substrate viscoelasticity, PI: Dr. Deepak Kumar BRB/10/ 1140/2012, 06.01.2015; GIA. Sinha, Biological Chemistry

030 To probe functional Bio-interfaces by scanning SERB; SB/SO/BB- 25.03.2015 24.03.2018 Rs.73,50,000/- probe Microscopy at Nanoscale/Single 33/2014 24.3.15; GIA. Molecule Level, PI: Dr. Rupa Mukhopadhyay, BC 031 Design and synthesis of triazole tailored macro- SERB; SB/S1/OC- 20.03.2015 19.03.2018 Rs.13,09,000/- cuclic azole amides for G-quadruplex DNA 06/2014, 12.3.2015; recognition, PI: Dr. Jyotirmayee Dash, OC GIA.

032 Graphene / CuPc composite for diode and DST, WOS; SR/ 30.03.2015 29.03.2018 Rs.20,10,000/- memory switching devices, PI: Ms. Moumita WOS-A/PM- 1023/2014(G); Mukherjee, MS 30.10.2014; GIA.

033 Electronic Structure and Transport in Functional DST; INT/FRG/ 01.05.2015 30.04.2017 Rs.4,84,000/- Nano-materials, PI: Prof. Indra Dasgupta, SSP DAAD/P-256/ 2015, 2 years 03.02.2015; GIA.

184 SL. NAME OF THE PROJECT/SCHEME/AWARD FUNDING AUTHORITY, DATE OF DATE OF SANCTION NO. SANC-AWARD COMM- TERMINATION AMOUNT TION NO., DATE, ENCEMENT CATEGORY

034 Magneto-functional properties of materials: SB/S2/CMP- 17.06.2015 16.06.2018 Rs.2,00,41,820/- Exchange bias and magnetic refrigeration PI: 029/2014 dated 3 years 09.06.2015; GIA. Dr. Saurav Giri, SSP

035 Magnetic and optical ...... Semiconductor, PI: CSR/Acctts/2014-15, 22.06.2015 31.03.2017 Rs.45,000/- + Prof. S.K. De MS dated 22.06.2015; 1 year 44,991/- Collaborative Project. (extended period).

036 Structure, spectroscopy and reactivity of low 37(3)/14/19/2015/ 15.09.2015 14.09.2018 Rs.22,16,000/- dimensional systems, PI: Dr. Ayan Dutta, BRNS/ 3076, 3 years 27.07.2015, GIA. Spectroscopy

037 Spin liquids: correlations, dynamics and Agreement 17.09.2015 16.09.2018 Euro 60,000/- disorder, PI: Dr. Arnab Sen, Theo.Phys. date: 28.07.15, 3 years Collaborative Project.

038 Synergistic participation of redox non-innocent EMR/2014/000520, 19.09.2015 18.09.2018 Rs.46,00,400/- azo-aromatic ligand(s) and metal in catalysis, 24.08.2015, GIA. 3 years PI: Prof. S. Goswami, IC

039 Dynamics of charge carriers in ion conducting EMR/2015/000149, 06.10.2015 05.10.2018 Rs.50,06,800/- glasses, PI: Prof. Aswini Ghosh & Prof. Subham 11.09.2015, GIA. 3 years Majumdar, SSP

040 Inhibition of cancer cell proliferation by targeting 6242-P31/RGCB/ 05.10.2015 04.10.2018 Rs.25,00,450/- human telomeric G-quadriplex with nucleoside PMD/DBT/JTDH/ 3 years 2015, 29.07.2015, derivatives, PI: Dr. Jyotirmayee Dash, OC GIA.

041 Cooperative Effect of two or more metal centers SERB, 17.10.2015 16.10.2018 Rs.44,90,000/- in the activation and reduction of dioxygen: EMR/2014/000972, 3 years implications for oxidation catalysis,PI: Dr. T.K. 06.10.2015; GIA. Paine, IC 042 Multicolor Electroluminescent Devices using SERB; 06.10.2015 05.10.2018 Rs.37,40,000/- Complex Nanocrystals as Active Elements, PI: EMR/2014/000664, 3 years. Dr. Somobrata Acharya, CAM 11.09.2015, GIA.

043 Photophysics and Photochemistry of Semi- Unilever Industries 15.06.2015 14.06.2018 Rs.39,60,360/- conductor Nanocrystals (ZnO, SnO2) and their Pvt. Ltd., Bangalore, 3 years MA-2015-01003, Composites, PI: Prof. Amitava Patra, MS 15.06.2015, Consultancy 044 Development of anion complex (synthetic Tata Steel Ltd.; 2015-2016 2017-2018 Rs.19,98,000.00 receptors) for removal of chloride and cyanide TSL&IACS/1/ 2015- 2 years + Service Tax 16, 28.8.2015, from steel wastewater, PI: Prof. Pradyut Ghosh, Collaborative Project. IC

185 SL. NAME OF THE PROJECT/SCHEME/AWARD FUNDING AUTHORITY, DATE OF DATE OF SANCTION NO. SANC-AWARD COMM- TERMINATION AMOUNT TION NO., DATE, ENCEMENT CATEGORY

045 Architecting visible-NIR light absorbing hetero- DST; SR/NM/ 18.12.2015 17.12.2018 Rs.94,36,800/- nanostructures for harvesting solar light., PI: Dr. NS-2014(G),. 3 years 09/12/2018, GIA. Narayan Pradhan, MS

046 Theoretical study on the quantum dynamics SERB; SB/S2/LOP-008/ 29.12.2015 28.12.2018 Rs.19,23,120/- of ultracold atoms, molecules and atom- 2014, 14.12.2015, 3 years molecular coupled systems trapped in a double GIA. well potential, PI: Dr. Bimalendu Deb, MS

047 H2 Evolution: Cheap Catalysts for Noble Task, SERB; SBSO/ 28.12.2015 27.12.2018 Rs.46,17,084/- PI: Dr. Abhishek Dey, IC BB-101/2013 3 years 19.08.2014; GIA

048 Modular Synthesis for Connecting Different SERB; 28.01.2016 27.01.2019 Rs.30,00,000/- Groups of Semiconductor Nanostructures for YSS/2015/001860, 3 years Efficient Photo-electrochemical Splitting of 12.01.2016, GIA. Water, PI: Dr. Gyanaranjan Prusty, MS

049 Effect of secondary coordination sphere on the SERB; 28.01.2016 27.01.2019 Rs.40,00,000/- reactivity of biomimetic metal-oxygen oxidants, YSS/2015/001741, 3 years 11.01.2016, GIA PI: Dr. Reena Singh, IC

050 Mechanistic Investigation of Reactivities SERB; 19.02.2016 18.02.2019 Rs.1,49,04,000/- of Heme-Peptide Complexes Relevant to EMR/2014/000392 3 years Alzheimer’s Disease & Type 2 Diabetes, PI: Dr. 15.02.2016, GIA. Somdatta Ghosh Dey, IC

051 Mechanistic Investigation of Reactivities SERB; 19.02.2016 18.02.2019 Rs.1,49,04,000/- of Heme-Peptide Complexes Relevant to EMR/2014/000392 3 years Alzheimer’s Disease & Type 2 Diabetes, PI: Dr. 15.02.2016, GIA. Somdatta Ghosh Dey, IC

052 Molecular level understanding about the role of SERB; 23.03.2016 22.03.2019 Rs.9522100/- lipids, interfacial water, ions and cholesterol in EMR/2015/001605, 3 years the allosteric modulation and enhanced activity 23.3.2016; GIA of proteins responsible for the blood clotting by a surface selective Heterodyne Detected Vibrational Sum Frequency Generation (HD- VSFG) Study, PI: Dr. Prashant Chandra Singh, Spect.

053 Synthetic mineralization by simple, cost DST; DST/TM/ 26.03.2016 25.03.2019 Rs.9913062/- effective way for permanent removal of toxic WTI/2K15/74 (C), 3 years contaminants from water, PI: Dr. Sugata Ray, 11.03.2016; GIA. MS

054 Bio-inspired supramolecular approach for DST; DST/SJF/ 07.06.2016 06.06.2021 Rs.2,12,00,000/- macromolecular assembly, PI: Dr. Suhrit Ghosh, CSA-012014-15, 5 years 30.05.2016, GIA. PSU

186 SL. NAME OF THE PROJECT/SCHEME/AWARD FUNDING AUTHORITY, DATE OF DATE OF SANCTION NO. SANC-AWARD COMM- TERMINATION AMOUNT TION NO., DATE, ENCEMENT CATEGORY 055 Synthetic mineralization by simple, cost DST; DST/TM/ 26.03.2016 25.03.2019 Rs.9913062/- effective way for permanent removal of toxic WTI/2K15/74 (C), 3 years contaminants from water, PI: Dr. Sugata Ray, 11.03.2016; GIA. MS 056 Bio-inspired supramolecular approach for DST; DST/SJF/ 07.06.2016 06.06.2021 Rs.2,12,00,000/- macromolecular assembly, PI: Dr. Suhrit Ghosh, CSA-012014-15, 5 years 30.05.2016, GIA. PSU

057 COT island inside two fused corroles: Unique SERB; 13.06.2016 12.06.2019 Rs.36,72,000/- photophysical properties and application for YSS/2015/001635, 3 years. water oxidation O2 Reduction and anti tumor 31.05.2016, GIA. activities, PI: Dr. Susovan Bhowmik , Inorg. Chem. 058 Design and Development of Organic Tata Steel Ltd.; V 10.12.2015 09.06.2017 Rs.25,00,000/- Compounds/Polymer to enhance the coking 001958, 2016- 1.5 years 17, 10.12.2015, potential of non-coking coal, PI: Dr. J. Dash, Collaborative Project. OC 059 Algorithmic Implementation of beyond born - SERB; 18.06.2016 17.06.2019 Rs.6167480/- Oppenheimer theories for Spectroscopic and EMR/2015/001314, 3 years 08.06.2016, GIA. Scattering Processes, PI: Prof. Satrajit Adhikari, PC 060 Development of bio-inspired catalysts for Swedish Research 01.01.2016 31.12.2018 SEK oxidative degradation of organic pollutants in Council, Sweden; 3 years 13,20,000.00 Collaborative Project. wastewater, PI: Dr. T.K. Paine, IC /-

061 Functional Study of Nonmuscle Myosin II SERB; 10.08.2016 09.08.2019 Rs.51,34,809/- Isoforms in Bleb Dynamics in Tumor Cell Line, EMR/2015/002054, 3 years 18.07.2016 PI: Dr. Siddhartha Sankar Jana, B. Chem

062 Semiconducting Nanotubes from Custom DST; DST/INT/ 30.07.2016 29.07.2018 Rs.6,40,000/- Designed Polyurethanes: Design and Charge JSPS/P-218/2016, 2 Years 25.07.2016, GIA. Transport Studies, Dr. Suhrit Ghosh, PSU

063 Developing Organic-Inorganic Hybrid SERB; 17.09.2016 16.09.2019 Rs.24,73,200/- Systems for Bromedical Applications, PI: Dr. EMR/2016/000894, 3 Years 02.09.2016, GIA. Parthasarathi Dastidar, IC

064 Halogen Bonding (XB) versus Hydrogen Bonding SERB; 23.09.2016 22.09.2019 Rs.52,59,384/- (HB) in Anion Recognition and Sensing, PI: Prof. EMR/2016/000900, 3 years 19.09.2016, GIA. Pradyut Ghosh, IC

065 Moulding of two advanced materials for DST; SR/WOS-A/ 22.09.2016 21.09.2018 Rs.21,80,000/- technical applications, PI: Dr. Chhayabrita PM-11/2016(G), 2 years 12.09.2016, GIA. Maji, MS

187 SL. NAME OF THE PROJECT/SCHEME/AWARD FUNDING AUTHORITY, DATE OF DATE OF SANCTION NO. SANC-AWARD COMM- TERMINATION AMOUNT TION NO., DATE, ENCEMENT CATEGORY 066 Development of anion complex (synthetic Tata Steel Ltd.; 2015-2016 2017-2018 Rs.52,90,000/- receptors) for removal of chloride and cyanide TSL&IACS/1/ 2015- 2 years from steel wastewater, PI: Prof. Pradyut Ghosh, 16, 28.8.2015, IC, Phase - 2. Collaborative Project. 067 Characterization of color compound and TATA Steel Ltd; W 2016-2017 2018-2019 Rs.19,40,000/- development of surface acting reagent of BOT 162875, 2016-2017, 1.5 years. Collaborative Project. water, PI: Dr. J Dash, OC

068 Polymer-Surfactant complex by Donor (D)- Unilever Industries; 01.06.2016 31.05.2019 Rs.39,33,075/- Acceptor (A) charge transfer (CT) Interaction, PI MA-2016-00723N, 3 years 01.06.2016 Dr. Suhrit Ghosh Sponsored Project.

069 Non-equilibrium dynamics of correlated DST; INT/RUS/ 17.09.2016 16.09.2018 Rs.20,32,360/- quantum systems: application to Josephson RFBR/F-249, 2 years 07.09.2016, GIA. junctions and ultracold atoms, PI: Dr. Krishnendu Sengupta 070 Stereoselective Total Synthesis of Marine SERB; 28.10.2016 27.10.2019 Rs.30,40,572/- Macrocyclic Lactone Biselyngbyaside and its EMR/2016/000988, 3 years 19.10.2016, GIA. variants and their Biological Activities, PI: Dr. Rajib Kumar Goswami, OC 071 Singlet Fission in Conjugated Molecules for SERB; 29.11.2016 28.11.2019 Rs.62,66,480/- Enhanced Solar Cell Efficiency Computation EMR/2016/000741, 3 years 24.08.2016, GIA. Investigations, PI: Dr. Ayan Datta, Spect.

072 Investigation of molecular origin of ice SERB; EMR/ 29.11.2016 28.11.2019 Rs.49,60,440/- recognition and ice growth prevention by 2016/001333, 3 years antifreeze proteins, PI: Dr. Biman Jana, Phys. 04.11.2016, Chem. GIA. 073 Design and Synthesis of Stimuli Responsive Ionic SERB; 11.01.2017 10.01.2020 Rs.75,12,144/- Polymer Architectures and Their Applications, EMR/2016/002321, 3 years. 19.12.2016, GIA. PI: Prof. Tarun Kumar Mandal , PSU

074 Nanotechnology based selective detection of DST; DST/TM/ 27.12.2016 26.12.2019 Rs.20,90,000/- endocrine disrupting chemicals in contaminated WTI/2K16/02 (G), 3 years 16.12.2016; GIA. water, PI: Dr. Nikhil Ranjan Jana, CAMs

075 Organic-inorganic Hybrid Mesoporous DST; DST/INT/ 22.11.2016 21.11.2018 Rs.6,30,000/- Materials as Carriers of Anti-inflammatory Egypt/P-05/2016, 3 years 08.11.2016, GIA Drugs for controlled Delivery Systems, PI: Prof. Asim Bhaumik, MS 076 Modulated Semiconductor Nanoheterostruc- SERB; 25.01.2017 24.01.2020 Rs.50,14,440/- tures for Photoelectrocatalysis, PI: Dr. Narayan EMR/2016/001795, 3 years Pradhan, MS 04.01.2017, GIA.

188 SL. NAME OF THE PROJECT/SCHEME/AWARD FUNDING AUTHORITY, DATE OF DATE OF SANCTION NO. SANC-AWARD COMM- TERMINATION AMOUNT TION NO., DATE, ENCEMENT CATEGORY 077 Functional analysis of Nonmuscle myosic Iis DBT; BT/PR12910/ 22.03.2017 21.03.2020 Rs.69,63,100/- and their mutants found in human patients, PI: BRB/10/1389/ 2015, 3 years Dr. Siddhartha Sankar Jana, BC 03.03.2017, GIA.

078 Multifaceted Symmetrical and Unsymmetrical SERB; 23.03.2017 22.03.2020 Rs.57,33,935/- Metallo-Phthallocyanines Peripherally EMR/2016/004705, 3 years 21.03.2017; GIA Functionalized with Aza-Crown Macrocycles, PI: Dr. Harapriya Rath, IC 079 SJF/DST/Targeting and mimicking nucleic acid DST; DST/SJF/ 22.05.2017 21.05.2022 Rs.3,07,98,400/- quadruplexes: A synthetic organic chemistry CSA-01/2015-16, 5 years paradigm, PI: Dr. Jyotirmoyee Dash, OC 16.05.2017; GIA.

080 DST/WOS-A/Mechanistic investigation of small DST; SR/WOS-A/ 12.06.2017 11.06.2020 Rs.21,64,000/- molecular-based hedgehog inhibitors, PI: Dr. LS-310/ 2016(G), 3 years 01.06.207; GIA. Chandra Bose, OC

081 DST/Engineering novel electronic and magnetic DST/INT/UK/P- 01.07.2017 30.06.2020 Rs.21,64,000/- states in pyrochlore indated multifunctional 132/2016,28.06.2017 3 years GIA materials for next generation, PI : S. Majumdar

082 SERB/Assembly of Peptide-conjugated Rylene SERB; 16.08.2017 15.08.2020 Rs.36,36,360/- dyes to Construct Soft Materials for Opto- EMR/2016/005318, 3 years 20.07.2017; GIA. electronics, PI: Dr. Arindam Banerjee, BC

083 SERB/Visible Light Induced C-C Bond Formation SERB; 17.08.2017 16.08.2020 Rs.45,73,800/- using Hydrogen Atom Transfer/Proton Coupled EMR/2016/006344, 3 years 20.07.2017; GIA. Electron Transfer Photocatalysis, PI: Dr. Joyram Guin, OC 084 SERB/Optoelectronic Properties of SERB; 30.08.2017 29.08.2020 Rs.65,05,335/- Polythiophene - Peptide Nanoconjugates, PI: EMR/2016/005302, 3 years 28.07.2017; GIA. Prof. Arun Kumar Nandi, PSU

085 SERB/Development of Solid State Emissive SERB; 05.10.2017 04.10.2020 Rs.71,12,880/- Organic Materials and their Applications, PI: EMR/2016/005767, 3 years 08.08.2017; GIA. Dr. Sudip Malik, PSU

086 SERB/Experimental investigation on spin-orbit SERB; 24.10.2017 23.10.2020 Rs.37,79,886/- interaction in correlated system; PI: Prof. S.K. EMR/2016/005437, 3 years 04.10.2017; GIA. De, MS

087 DST/Nanodrug formulation for inhibiting DST; SR/NM/NB- 29.06.2017 28.06.2020 Rs.71,93,349/- mutant huntingtin protein aggregation inside 1009/2016 (C), 3 years 08.06.2017; GIA. neuronal cell: prevention/curing of Huntington’s disease; PI: Dr. N.R. Jana, CAMS

189 SL. NAME OF THE PROJECT/SCHEME/AWARD FUNDING AUTHORITY, DATE OF DATE OF SANCTION NO. SANC-AWARD COMM- TERMINATION AMOUNT TION NO., DATE, ENCEMENT CATEGORY 088 SERB/Theoretical Study of Spin-Orbit Driven SERB; 07.11.2017 06.11.2020 Rs.42,81,984/- Emergent Phenomena in Strongly Correlated EMR/2016/005925, 3 years Systems; PI: Prof. I. Dasgupta, SSP 05.10.2017; GIA.

089 TSL/Assessment of the level of OH radical TSL; Y 379113; 2017-2018 2019-2020 Rs.17,69,520/- atmosphere’s detergent, in the ground level 2017-2018; air of Jamshedpur and surrounding areas”; PI: Collaborative Project Prof. Tapas Chakraborty, PC

090 Computational Investigations for the linear DST; INT/ 12.01.2018 11.01.2021 Rs.17,64,000/- and nonlinear optical properties of metal and BELG/P-07/2017, covalent organic framework: application for 09.01.2018; GIA. detectionof molecules, PI: Dr. Ayan Datta, Spect. 091 Activation and Reduction of CO2, H+, SO2, SERB; 17.03.2018 16.03.2021 Rs.2,78,03,900/- NO2, CO and N2 By Iron Porphyrins: In Pursuit EMR/2016/008063, 3 Years 14.03.2018; GIA of a Universal Reductase, PI: Dr. A. Dey, IC

092 Design and Development of Self-Aggregated SERB; 13.03.2018 12.03.2021 Rs.65,88,000/- Fluorescent Organic Nanoparticles: Prospects EMR/2017/000656, 3 Years in Biochemical Process to Theranostic 07.03.2018; GIA Applications, PI: Prof. P.K. Das, BC

093 Search for signatures of gravity theories beyond EMR/2017/001372 21.03.2018 20.03.2021 Rs.19,06,243/- Einstein, PI : S. SenGupta

094 Designed Ionic Liquids and Ionic-Liquid CSIR; 01(2688)/12/ 10.01.2013 02.10.2015 Rs.24,92,000.00 Polymers …… Nanostructures. PI: Prof. Tarun EMR-II, 03.10.2012; Kr. Mandal, PSU GIA.

095 Proline containing chiral dendritic molecules as CSIR; 02(0121)/13/ 12.04.2013 11.04.2016 Rs. 23,92,000/- novel G-quadruplex binding ligands, PI: Dr. J. EMR-II; 12.04.2013; GIA Dash, O.C.

096 H-bonding Reinforced Alternate Stacking of CSIR; 02(0177)/14/ 07.05.2014 06.05.2017 Rs.16,52,000/- Aromatic Donor and Acceptor Chromophores EMR-II, 07.05.2014, Testing the Scope in Organic and Aqueous GIA. Medium, PI: Dr. Suhrit Ghosh, PSU 097 Structural changes in protiens induced by ion CSIR; 01(2803)/14/ 24.11.2014 23.11.2017 Rs.4,50,000/- binding: A polarized attenuated total reflection- EMR-II, 24.11.2014; fourier transform infrared (ATR-FTIR) study, PI: GIA Dr. Prashant Chandra Singh, Spectroscopy 098 Improving Mechanical and Optoelectronic CSIR; 02(0241)/15/ 26.11.2015 25.11.2018 Rs.2,096,000.00/- Properties of Hybrid Supramolecular Gels, PI: EMR-II, 26.11.2015; Prof. A.K. Nandi, PSU GIA.

190 SL. NAME OF THE PROJECT/SCHEME/AWARD FUNDING AUTHORITY, DATE OF DATE OF SANCTION NO. SANC-AWARD COMM- TERMINATION AMOUNT TION NO., DATE, ENCEMENT CATEGORY 099 Computational Study of Thermochemical CSIR; 01(2846)/16/ 01.06.2016 31.05.2019 Rs.890,000.00/- Properties and Hydrogen Storage Systems, PI: EMR-II, 12.05.2016; Prof. Abhijit Kumar Das, Spectroscopy GIA.

100 Development of Advanced Bioimaging Probe CSIR; 02(0249)/15/ 17.05.2016 16.05.2019 Rs.12,96,000/- from Nanobioconjugate Having Controlled EMR-II, 17.05.2016; Average Number of Biomolecule between One GIA. and Hundred per Nanoparticle, PI: Dr. Nikhil Ranjan Jana, CAMs 101 Targeting four stranded nucleic acids using CSIR; 02(0269)/16/ 02.12.2016 01.12.2019 Rs.2,696,000.00 prolinamide derivatives, PI: Dr. Jyotirmayee EMR-II, 02.12.2016, Dash, OC GIA.

102 Functional Analysis of the Spliced Isoforms CSIR; 37(1687)/17/ 01.05.2017 30.04.2020 Rs.20,00,000/- of NMII in Mouse Neuronal Cells, PI: Dr. EMR-II, 05.05.2017 3 years 7 Siddhartha S. Jana, BC

103 Tuning the Geometric and Electronic Structure CSIR; 01(2874)/17/ 01.05.2017 30.04.2020 Rs.1,400,000.00 EMR-II, 02.05.2017, of O2 and CO Adducts of Iron Porphyrins by 2nd Sphere Hydrogen Bonding Interactions, PI: GIA. Dr. Abhishek Dey, IC 104 Development of Coin type Supercapacitor using CSIR; 01(2875)/17/ 01.05.2017 30.04.2020 Rs.1,200,000.00 Graphene Oxide/Polyaniline Nanocomposite EMR-II, GIA Electrode Materials, PI: Dr. Sudip Malik, PSU

105 Total Synthesis of Biologically Potent CSIR; 02(0294)/17/ 05.05.2017 04.05.2020 Rs.2,404,000.00 Cyclodepsipeptide National Products EMR-II, 05.05.2017; Nanocystins and their Relevant Analogues; PI: GIA Dr. R.K. Goswami, OC

106 Characterizing Phase Transition and CSIR; 03(1414)/17/ 09.05.2017 08.05.2002 Rs.2,396,000.00 Coarsening Dynamics in Systems with Vector EMR-II, 9.5.2017 3 years Order Parameter; PI: Dr. Raja Paul, SSP

107 Development of new functional materials and Indo-Russian/DST- 26.03.2017 25.03.2020 Rs.11,23,267.00 green processing routes for efficient and stable RMES Project; DST/ /- INT/RMES/P-09/2016, organic photovoltaic devices, PI: Ayan Datta, 07.03.2018; GIA Spec

191 STATUS OF RESERVATION FOR SC/ST/ OBC/PHYSICALLY DISABLED PERSONS

Consequent upon adoption of the principle of reservation for SC/ST/OBC/PWD by the Governing Council, the Association has been following the policy of the Government in the matter of the recruitment of Academic and Non-Academic staff.

A brief statement in regard to the recruitment in the post of reserved categories till 31st March, 2018 is appended below:-

CATEGORY NO. OF POST NO. OF NO. OF NO. OF NO. OF POST TO BE IDENTIFIED VACANCY POST FILLED POST POST TO BE FILLED UP AVAILABLE UP ADVERTISED ADVERTISED AGAINST FUTURE VACANCY Group A 08 06 02 - 06 - Group B 55 28 27 01 27 - Group C 64 24 43 03 21 - Total 127 58 72 04 54 -

Note:- 1. After implementation of 6th CPC’s recommendation, all cadres of PB-2, Grade Pay of Rs. 4600 have been merged with Group B and Cadres of PB-1, below Grade Pay of Rs. 1900 (erstwhile Group D) have been merged with Group C and accordingly shown above. 2. All 9 posts of Sweepers filled up from the SC Category

IMPLEMENTATION OF “RIGHT TO INFORMATION ACT 2005

In order to promote transparency and accountability in its functioning, IACS has been making constant efforts for successful implementation and enforcement of Right to Information (RTI) Act 2005 promulgating by the Government of India. As per provision of the Act, IACS mandates timely response to any Indian citizen requesting for information. The RTI Cell at IACS by making its Pro-active Disclosure available online in the Public Doman, has been a Gateway to the citizens for quick search of information relating to IACS.

The following Officers are responsible to properly implement the RTI Act at IACS :- 1. Shri Amit K Majumdar, Assistant Registrar-I, Registrar’s Office – CPIO 2. Shri Soumen Kumar Ghosh, Office Superintendent, Academic Office – ACPIO 3. Shri S N Moulik, Acting Registrar – Appellate Authority –upto 30th November, 2017 and thereafter : Smt. Purbasha Banerjee, Acting Registrar – Appellate Authority w.e.f 01.12.2017

192 Annual Report of Internal Complaints Committee

MEMBERS: Prof. Tanusree Kar Chairperson Prof. Durga Basak Member Prof. Tanusri Saha Dasgupta External Member Prof. Amitava Patra Member Prof. Rupa Mukhopadhyay Member Dr. Somobrata Acharya Member Dr. Siddhartha Sankar Jana Member Dr. Miratun Nahar Lady NGO Member Mr. Arka Pratim Chowdhury Lawyer Member Mrs. Chandana Bhattacharya Member-Secretary

NO. OF COMPLAINTS NO. OF COMPLAINTS NO. OF CASES NO. OF AWARENESS RECEIVED DISPOSED PENDING PROGRAMME CARRIED OUT

Nil Nil Nil 01 (Org by NAHRD)

193 Library

The Association Library is an oldest in eastern region with all modern amenities and is situated in a magnificent building covering an area of 15,000 square feet’s. The mission of the Library is to provide information services and access to bibliographic, full text both in digital and printed resources to support the scholarly and information needs of all students, faculty members, staff and life-temporary members. The Library remains open from 9.30 a.m. to 7.00pm on all working days and Saturdays 11.00 a.m. to 5.00 p.m.It is a most lively place in the campus providing a peaceful, comfortable and academic-friendly environment that enables learning and advancement of knowledge, promotes discovery and to grow as a top-ranked integrated academic campus by establishing a knowledge hub and to enable access to information resources of all kinds and provide innovative, responsive and effective services to meet the changing needs of the academic scholarly community. The library has its own local Network connected with a server Online Public Access Catalogue (OPAC) of the library has databases of books, journals and other resources including supports of DST-CSIR consortium(NKRC) New Delhi. Library visited on 26th Dec.2017 at IACS UGC Team

Library Resources • Large number of Rare books • Over 81141 nos bound volumes of books • Online access available About 7000 Scientific Journals & Database in the various discipline through NKRC[ DST-CSIR Consortium] • Reprography Services • Resource sharing with other leading Institutes/ Universities through document delivery. • Web OPAC in network • Introduced iThenticate Plagiarism Software

LECTURE/MEETINGS/CONFERENCE/WORKSHOP ATTENDED BY NON-FACULTY STAFF : Shri Chanchal kr. Das: International Conference on Anti Human Trafficking:”Advantage of Mobile library Services in Rural area.” 25th & 26th November, 2017 Organized by Indian Council for Cultural Relations (ICCR), Kolkata. Dr. Gayatri Paul : Open Access: The Road to Freedom, 33rd

Archives Display inside the Library for UGC Visitors’ on 26.12.2017 Annual Convention of the Society for Information of Science, 7-8 April,2017 organized by Indian Institute of Chemical Biology (CSIR) Kolkata-32.

194 CSS Instrument

195 Department of Central Scientific ServiceS

Prof. Tarun Kumar Mandal Prof. TapanKanti Paine Prof. Sugata Ray Prof. Parthasarathi Dastidar

SL / NAME OF NAME OF THE NAME ROOM E-MAIL ID SERVICE NO THE INSTRUMENT FACULTY OF THE NO. CHARGE IN-CHARGE OPERATOR CONTACT (EXTERNAL NO. USERS)

01 AFM(Atomic Force Prof. Somobrata Acharya Mr. Sanjib Naskar Computer [email protected] Rs. 2500/- Microscope) Center (Institute) Ext No. 1586 Rs. 5000/- 02 AFM (Atomic Force Prof. Prasanta Kumar Das Mr. Rabindranath Banic (Industry) Microscope) CP-II Per 2.5 hour Session

03 BET Surface area analyzer Prof. Tarun Kumar Mondal Mr. SrideepBera Room No. 11 [email protected] Rs. 1500/- Ext No. 1710 (Institute) Rs. 3000/- (Industry)

04 CHNS Analyzer Prof. Amit Majumder Mr. Srideep Bera Room No. 100 [email protected] Rs. 1500/- (Inst) Ext No. 1370 Rs. 3000/- (Industry)

05 CD (Circular Dichroism) Prof. Suhrit Ghosh Mr. Chanchal Room No. 10 [email protected] Rs.750/- 1 hour, Kumar Das Ext No. 1509 Rs. 1000/- 2 hour + Rs. 500/- for ext 1 hour. Industry double rate

06 DSC (Differential Scanning Prof. Somobrata Acharya Mr. Arup Kr Room No. 83 [email protected] Rs.1000/- TGA, Calorimeter) Bandhapaya Ext No. 1262 TA, DSC Rs.1500/- Prof. Sudip Malik [email protected] DSC LVS Pan) (Inst) 07 DSC / TGA ( Differential Rs. 2000/- TGA, Scanning Calorimeter) TA, DSC Rs.3000/- 08 TGA / DTA(Thermogravimetric DSC (LVS Pan)Per Analysis sample. for Industry.

09 DLS (Dynamic Light Scattering ) Prof. Tarun Mrs. Champa Bag Room No. [email protected] Rs. 500/- Kumar Mondal Ext No.1563 (Institute) [email protected] Rs. 1000/- 10 DLS Zeta-Potential Particle Size Prof. SuhritGhosh and Molecular Weight (Industry)

11 Electro Magnet Prof. Saurav Giri Nil Ext No.1227 [email protected]

12 Ellipsometry Prof. Shyamal Mr. Indranath Bhaumik Room No. 203 [email protected] Rs. 500/- (Institute) Kumar Saha Ext No.1602 Rs.1000/- (Industry) per 3 hour session.

13 EPR Spectrometer Prof. Tapan Kanti Paine Dr. Bholanath Mondal Ext No. 1808 [email protected] Rs.1000/- 1 hour Prof. Somdatta Ghosh Mr. Sujit Bag + Rs. 500/- ext hrs. (Institute) Dey Rs.2000/- 1 hour + Rs. 1000/- ext hrs. (Industry)

196 SL / NAME OF NAME OF THE NAME ROOM E-MAIL ID SERVICE NO THE INSTRUMENT FACULTY OF THE NO. CHARGE IN-CHARGE OPERATOR CONTACT (EXTERNAL NO. USERS)

14 FE-SEM Prof. Tarun Kumar Mondal Dr. SasankaMaji Room No. 25 [email protected] Rs. 2500/- (Inst) (Field Emission Scanning Ext No. 1181 Rs. 5000/- Electron Microscope) Prof. Somobrata Acharya Mr. Satinath Paul [email protected] (Industry) per Mr. Ranajit Sardar sample

15 FT-IR Prof. Narayan Pradhan Mr. Subrata Das Room No. 85 [email protected] Rs. 500/- (Institute) (Fourier Transform Infrared Ext No. 1181 Rs.1000/- Spectrometer) Mr. Tapas Bala (Industry) per sample.

16 FT-NMR (Nuclear Magnetic Prof. Tapan Kanti Paine Mr. Sumit Roy Room No. 5 & 6 [email protected] Rs.500/- 1/2 Resonance) Spectrometer Ext No. 1173 hour,Rs. 1000/-1 hrs. Prof. Joyram Guin Mr. Sachin Roy + Rs. 500/- each Mr. Nirmalya Dutta 1 hour (Institute) Rs1000/- 1/2 hour , Rs. 2000/- 1 hrs. + Rs. 1000/- each 1 hour (Industry) 17 Inert Atmosphere Glove Box Prof. Pradyut Ghosh Room No. [email protected] Ext No. 1357

18 HPLC (High Performance Liquid Prof. Surajit Sinha Nil Room No. [email protected] Chromatography) Ext No. 1400

19 HR Mass Spectrometer Prof. Pradyut Ghosh Mr. S. K. Sarkar Room No. 64 [email protected] Rs. 500/- (Institute) Ext No. 1180 Prof. Rajib Goswami Mr. Goutam Biswas Rs. 2000/- (Industry)

20 Mini VSM (Vibrating Sample Prof. Subham Majumdar Mr. Subir Sikder Room No. 16B [email protected] Magnetometer) Ext No. 1172

21 MPMS (Magnetic Property Prof. Sugata Ray Mr. Prasad Modak, Room No. [email protected] Rs.6000/- (Institute) Measurement System) Comptercentre Prof. Subham Majumdar Ext No. 1315 Rs. 10000/- (Industry)

22 MALDI (Matrix Assisted Laser Prof. Sudip Malik Mrs. Champa Bag Room No. 301 [email protected] Rs.1000/- Deposition / Ionization Mass Ext No. 2126 Normal Mode Spectrometry) Prof. Surajit Sinha Rs. 2000/- Finger print Rs. 2500/- MS Mode Double charge for Industry

23 Optical Microscope & Micro Prof. Shyamal Kumar Dr. Manash Ghosh Room No. 88 [email protected] hardness Test Saha Ext No. 1260

24 PLD (Pulsed Laser Deposition) Prof. Durga BasakMr. Tapas Dutta Room No105 [email protected] Rs. 5000/- (Institute) Ext No. 1616 Rs. 10000/- (Industry)

25 PPMS (Physical Properties Prof. Subham Majumdar Mr. Subir Sikder Room No18 [email protected] Rs. 2000/- (Institute) Measurement System) Ext No. 1182 Rs. 5000/- (Industry) Prof. Shyamal Kumar Saha

26 Raman Spectrometer (Laser) Prof. Abhishek Dey Dr. Manash Ghosh Room No88 [email protected] Rs. 2000/- (Institute) Ext No. 1260 Rs. 4000/- (Industry)

197 SL / NAME OF NAME OF THE NAME ROOM E-MAIL ID SERVICE NO THE INSTRUMENT FACULTY OF THE NO. CHARGE IN-CHARGE OPERATOR CONTACT (EXTERNAL NO. USERS)

27 TCSPC Prof. Narayan Pradhan Mr. Subrata Das Room No.85 [email protected] Rs. 1000/- (Institute) Ext No. 1274 Rs. 2000/- (Industry)

28 TEM (High Resolution) Prof. Amitava Patra Mr. Arunim Paul Room No [email protected] Rs. 2000/- (Institute) (Transmission Electron Comp Centre Rs. 5000/- (Industry) Microscope) Ext No. 1583

29 TEM (UHR FEG TEM) Prof. Nikhil Ranjan Jana Mr. Supriya Chakraborty Room No. 21 [email protected] Rs. 5000/- (Institute) (Transmission Electron Ext No. 1251 Rs. 10000/- (Industry) Microscope) Mr. Suman Guchait Per 1 hour Session Mr. Sanjoy Sarkar 30 UV-VIS- NIR Prof. Narayan Pradhan Mr. Subrata Das Room No.85 [email protected] Rs. 500/- (Institute) Spectrophotometer Ext No. 1274 Rs. 1000/- (Industry)

31 Vacuum coating unit Prof. Sugata Ray Mr. Tapas Bala Room No85 [email protected] Ext No. 1274

32 Vibrating Sample Prof. Sugata Ray Mr. Subir Sikder Room No LN2 [email protected] Rs. 3000/- (Institute) Magnetometer Ext No. 1226 Prof. Saurav Giri Rs. 6000/- (Industry)

33 XPS (X-Ray Photoelectron Prof. Sugata Ray Mr. Sandip Sarkar, Room No. 77A [email protected] Rs. 5000/- (Institute) Spectrometer) Ext No. 1253 Rs. 10000/- (Industry)

34 XRD (Single Crystal)-I Prof. Pradyaut GhoshMr. Partha Mitra Room No. [email protected] Rs. 1500/- (Institute) Ext No. 1368 Rs. 6000/- (Industry)

35 XRD (Single Crystal) -II Prof. Pradyaut Ghosh Mr. Partha Mitra Room No. [email protected] Rs. 1500/- (Institute) Ext No. 1368 Rs. 6000/- (Industry)

36 XRD Powder (High resolution) Prof. Parthasarathi Dr. Bholanath Mondal Room No.11 [email protected] Rs.1000/- (Inst) Dastidar Ext No. 1215 Rs.3000/-(Industry) per sample

37 XRD (AXS) BRUKER Prof. Saurav Giri Mr. Sutapesh Dutta Room No. 03 [email protected] Rs.1000/- (Inst) Mrs. Sipra Ghosh Ext No. 1365 Rs.3000/-(Industry) per sample

38 Dielectric Prof. Somobrata Acharya Room No [email protected] Measurement System Ext No.

39 Electrochemical Cell/ Prof. Abhishek Dey Room No [email protected] DiodeArraySpectophotometer Ext No.

40 Bacteria Culture System Prof. Deepak K Sinha Room No. 23B [email protected] Ext No. 1266

41 High Performance Prof. Benu Brata Das Room No.23B [email protected] Centrifuge System Ext No. 1266

42 Table Top Centrifuge System Prof. Sudip Malik Room No. 23B [email protected] Ext No. 1266

43 Real Time PCR Prof. Prasenjit Sen Room No.23B [email protected] Ext No. 1266

44 Deep Freezer (- 80* C) Prof. S. S. Jana Room No.23B [email protected] Ext No. 1266

198 SL / NAME OF NAME OF THE NAME ROOM E-MAIL ID SERVICE NO THE INSTRUMENT FACULTY OF THE NO. CHARGE IN-CHARGE OPERATOR CONTACT (EXTERNAL NO. USERS)

45 Computer Cluster Prof. Ankan Paul Room No. [email protected] Contact to the Ext No. Faculty In-Charge

46 Type i& II Clean Water System Prof. Abhishek De Room No [email protected] Rs. 10/- (institute) Workshop Ext No. Rs. 20/- (Industry)

Departmental Publications

1. Magnetic measurements, Raman and infrared spectra of 5.Fermi-Integral and Density of States functions in a parabolic metal–ligand complex derived from CoCl2•6H2O•CoCl2•6H2O band semiconductor: Degenerately doped with Impurities and 2-benzoyl pyridine - S Datta, AS Mahapatra, P Sett, Manash forming band-tail -Pramana, 90(2) (February 2018)18, B K Ghosh, PK Mallick, PK Chakrabarti, Bulletin of Materials Choudhuri, P K Chakrabarti, B N Mondal Science; 41 (2), 60 (2018).[IF:] 6. A note on anomalous band-gap variations in semiconductors 2.Effects of surface topography on SERS response: Correlating with temperature - Indian Journal of Physics, 90(2) (March nanoscopy with spectroscopy - SK Das, Manash Ghosh, J 2018) 303-306, P K Chakrabarti, B. N. Mondal Chowdhury, Applied Surface Science, 439, 1-10 (2018).[IF:] 7.Biocompatibility of poly(Lactic-Co-Glycolic acid) – grapheme 3.Self-assembly of metal nanocolloids entrapped in Langmuir oxide composite using cryopreserved human stem cells - Blodgett Film templates: Evidence of efficient SERS sensing Chemical Science Review and Letters, 6 (July 2017)1831- platforms -Joydeep Chowdhury*, Somsubhra Saha, Manash 1836. B Choudhuri, B N Mondal, D Bhadra, S C Sarkar Ghosh, Materials Today: Proceedings, 5 (2018) 10071–10076 4.Magnetic behavior and Raman spectroscopy of the composite system of CuCl2• 2H2O–C12H9NO2- S Datta, AS Mahapatra, P Sett, Manash Ghosh, PK Mallick, PK Chakrabarti, Journal of Science: Advanced Materials and Devices, 3(1) 113-121 (2017).[IF:]

199 Centre for Computer Research, Education and Services (CCRES)

The IACS Computer Centre provides all network related services Recovery related issues including database maintenance with to its faculty, staff and students. It has a state of the artData Centre backup and restoration are done in the Computer Centre. (DC) withwell maintainedservers in a cluster environment. The Management with multi-ISP configuration setup in failsafe servers run with RedHat Enterprise Linuxplatform with fail-over mode with preferential load balancing is done by the Computer mode to minimise the downtime. In the Data Centre There are Centre. The Centre runs on a dual bandwidth setup for better high end Firewall, Router, WLC and Core switches. Computer reliability. 1Gbps link from NKN is primarily used for internet, Centre manages the mail system for IACS with SAN storage for online journals and video conferencing etc. The other link from authorised users including web-mail facility. All incoming mails Tata Communications with filtered bandwidth is being used for are filtered through IronPort SPAM guard facility. The Web- IACS mail system and Web server. The Centre is connected server and day-to-day maintenance of IACS Website is done by through Fiber Optic cable with ISPs for better stability. Campus- the Computer Centre. The Search Engine Optimization (SEO) wide Wi-Fi services are provided with adequate network security. is implemented and regularly maintained by the Computer The ERP running on Visual Basic and MSSQL that caters Centre for better visibility and keyword discovery by popular Salary, Medical, (Project and Institute fellows) are maintained Search Engines. The cluster of servers includes a proxy-server by the Computer Centre. The Computer Centre also provides for authentication which adds to security and accountability. remote connectivity via virtual private network (VPN).Computer Other servers in the cluster are being used for local DNS and ftp Centre assists administration and Accounts section for different services. All these services are integrated with Directory Service ERP related services. Process has been initiated to extend the (LDAP) for seamless use. Institutional Repository (IR) for IACS is LAN to the Subranarekha Hostel during 2017-18.Computer implemented and being maintained by the Computer Centre in Centre provides services related to the high performance which research publications, theses and reports are uploaded computational facilities of IACS that also include a state-of- either in pre-print or post-print form adhering the copyright the-art supercomputing facility. Expansion of High Performance policy of the publishers as per the mandate from NKN and Computing facility through the procurement of a CRAY XC50 NKRC. The IR of IACS is implemented with handle registration Supercomputer with cutting edge Aries interconnect which is for interoperability. The documents are globally searchable with capable of delivering around 80 Tera Flops of computing power DOI and other key words. Back volumes of Indian Journal of using a CPU-GPU platform has been initiated during 2017-18. Physics are available in the IR. Efficient management of Disaster

200 THE LIST OF SERVICES PROVIDED BY THE COMPUTER 9. Implementation and maintenance of Institutional Repository. CENTRE IS AS FOLLOWS: 10. Configuration and maintenance of network equipment like 1. Provides Internet (through ethernet as well as Wi-Fi) in the Router, Firewall, WLC, Core Switch and L2/L3 switches. entire IACS campus for Faculty, Staff, Scholars and all bonafide 11.Regular Back-up of user data. users including visitors and guests. 12.Helps in Video Conferencing set-up and maintenance. 2. Web-mail facility. 13.FTP service for sending/receiving large sized files. 3. Remote connectivity through VPN and gateway server. 14.Gateway service to faculty members and students to access 4. Secure web access through proxy authentication. remote servers. 5. ERP services to the administration and Accounts section. 6. Design and day-to-day maintenance of IACS website (www.iacs.res.in). 7. Maintains and uploads tenders in CPP Portal. 8. HPC related services.

201 Carpentry LV and MV Electrical WORKSHOP Electronics Glass Blowing Mechanical Refrigerator & AC

CIVIL & PLUMBING

3 MVA Substations with DG set ( 24 x 7) ELECTRICAL WORKSHOP Electromechanical Services ENGINEERING, WORKSHOP & STORES EPABX

LIQUID N2

STORES Electrical Civil Mechanical

Workshop provides essential services to the scientists for making Scientific apparatus and also maintenance services in the area of Carpentry, Electrical, Electronics, Glass Blowing, Mechanical & Refrigeration & Air Conditioning, Distilled & deionised Water support in IACS. Mechanical Section – Scientific apparatus were manufactured or repaired or modified as per requirement by machining & fabrication of steels, stainless steels, brass, copper, aluminum & many non-metals such as Perspex, ebonite, Teflon etc as per job received. Electrical Section – Electrical maintenance works are carried out on breakdown & preventive maintenance of low tension electric distribution networks. Arrangements of audio- visual –lighting system in seminars are also made. Glass Blowing section –Manufacturing & repairing of glass apparatus has been done along with quartz glass, etc. The specific jobs are Distillation Units, Reaction Vessels, and Different Manifolds etc. Refrigeration & Air- Conditioning section – Repairing of AC & refrigerators, both standard & low temperature units, chillers for instruments, cold water baths etc. are done. Also many ACs of higher tonnage, AC plant & conventional ACs are maintained. Carpentry Section- The carpentry section is equipped for providing services to the laboratories by making different types of laboratory fixtures, table and furniture requirements related to scientific equipment as well as maintaining maintenance of office furniture. Electronics section – Electrical renovations in laboratories are carried out. Making & repairing of electronic gadgets, instruments are done. Distilled Water Plant – Provides milliQ water, doubled & single distilled water to the researchers.

202 CIVIL SECTION : The Civil section is now located inside the Workshop Building. The civil section of IACS is taking care of all construction activities of the institute. It is doing all routine Repair & Maintenance works consisting of plumbing/sanitary and other Civil Repairing activities. Renovation, addition, alteration works for making laboratory set up and for many other purposes are executed by the Civil Engineering section. The activities of day to day Cleaning and Housekeeping works, Providing Fire Extinguishers in designated locations are also done by the Civil Engineering Section. The installation of Fume Hoods in the laboratories and its maintenance are done by the Civil Engineering Section. The numbers of Fume Hoods are more than 100 in IACS. The setting of specially featured laboratory facilities and many High computing Clusters are also set up by the Civil Engineering Section. The sophisticated CRAY supercomputer and its supporting system are constructed by the Civil Engineering Section located in the Centenary Building. The water circulation and supply of water for domestic, Laboratory and other purposes is being maintained by the Civil Engineering section.

ELECTRICAL SECTION • Round the clock (24x7) operation & maintenance of 6KV, 3 MVA Indoor type Substation and DG sets including operation of Drinking Water Pumps. The above job includes monitoring of energy in regard to various electrical parameters viz. Voltage, Current, Power factor, Demand, Core Temperature of Dry Type Transformer etc. so that, quality power can be delivered. Intensive monitoring of the power system helps the consumer to maintain the desired power factor for earning power factor rebate (PFR) to the maximum possible extent. During the F.Y. 2017-18, IACS could enjoy PF rebate to the tune of Rs. 31.4 Lacs. • Day-to-Day maintenance of various Electro-Mechanical services (viz. Internal & external Electrical installation), Air-Conditioning Systems (viz. Package, VRF & Precision), Passenger lifts, Addressable Automatic Fire Detection System etc. • Day-to-Day Operation & maintenance of EPABX cum Reception Centre i/c Up-gradation of the same. • Providing Electrical Infrastructure for laboratories & Offices. • Recording of Energy meter readings for IACS Staff Quarters, SBI ATM, Construction Power etc. and preparation & distribution of monthly electricity bills thereon. • Planning, Design, Estimation & Costing including preparation of Tender documents, calling of tender, award of work, execution of work, recording of measurements, bill certification etc.. • Liaison with Government & Statutory Bodies, Supply Company etc. viz. Central Electricity Authority (CEA), West Bengal Pollution Control Board, CESC Ltd. • Introduction of Solar PV Standalone LED Street Lighting System in the campus of IACS, Jadavpur. • Monitoring of work pertaining to Electrical Infrastructure Development for 3nos. DG sets (2x500 KVA + 1X250 KVA) of IACS.

203 LIQUID NITROGEN FACILITY • Presently there are three Plants that are installed at IACS namely, PLN106 : capacity: 6-7 lit/hr; MNP 9/01, capacity : 10 lit/hr; SPC01, capacity : 9-10 lit/hr. Total production capacity = 288 lit/ day = 250 lit/day (considering evaporation loss).

• No. of Groups using LN2 = 30 approx. • CSS Instruments covered = NMR, BET, XRD, EPR, TEM, SEM etc. • External supply : 3.850 lit; Internal supply : 30854 lit • Sales against money receipt (accounts section) rate : Rs. 35/lit.

204 Non Academic Members as on 31st March, 2018

ADMINISTRATION

Smt Purbasha Banerjee Shri Sujay Mukhopadhyay (F&AO) Acting Registrar Finance & Accounts Officer-II Shri Subir Kr Nath (F&AO, Proj) Smt Sarbani Saha Finance & Accounts Officer-II Secretary in Director’s Secretariat Shri Biswanath Hazra Shri Swapan Pal Finance & Accounts Officer-II Assistant Registrar-II Shri Somansu Sekhar Das Shri Swapan Thakur Assistant Registrar-II Finance & Accounts Officer-I Shri Prasanta Kr. Kundu Shri Amit Kr. Majumdar Finance & Accounts Officer-II Assistant Registrar-I Shri Biswanath Mondal Shri Arun Dutta Assistant Registrar-II Finance & Accounts Officer-I Shri Sekhar Mullick Shri Mohan Lal Soni Technical Officer Assistant Registrar-I Smt. Anita Chowdhury Shri Abhijit Basak Assistant Registrar-II Assistant Registrar-I Shri Apu Chakraborty Smt. Dipanwita Chakraborty Finance & Accounts Officer-II Assistant Registrar Shri Abhijit Dasgupta Smt Suchismita Mallick Assistant Librarian-II Assistant Registrar Shri Debatosh Majhi Shri Soumendra Nath Bose Finance & Accounts Officer-II Engineer-I Shri Arup Kr Saha Shri Dibakar Majumdar Finance & Accounts Officer-I Asst. Engineer (Civil) Shri Amit Kr Sarkar Shri Ajit Kr Basak Assistant Engineer-I (Civil) Technical Superintendent Shri Sujit Kr Biswas Shri Chandan Goswami Finance & Accounts Officer Junior Engineer (Electrical) Shri Swapan Majumder Shri Gopal Krishna Manna Technical Superintendent Technical Superintendent Shri Arup Dhar Shri Prabir Manna Assistant Engineer (Civil) Assistant Registrar Shri Pranab Ch. Kar Shri Shib Sankar Basu Assistant Registrar Jr. Enginer (Elec.) Smt. Sujata Gupta Shri Swapan Kr. Singha Technical Officer Technical Superintendent Smt. Suhita Neogi Shri Subrata Basu Technical Assistant-B Senior Technician Shri Asit Banerjee Shri Tapan Sardar Sr. Record Keeper-B Assistant

205 ADMINISTRATION

Shri Soumik Mitra Shri Soumen Seal Upper Division Clerk-I Upper Division Clerk-I Shri Soumen Kr. Ghosh Shri Rajib Debnath Office Superintendent Junior Engineer (Civil) Shri Raj Kumar Rauth Shri Anil Harijan Senior Record Keeper-A Helper-E (Sweeper) Shri Sanat Kr Adak Shri Haradhan Majumder Staff Car Driver-D Technical Superintendent (Plmb) Shri Rajesh Mondal Shri Sanjib Chongdar Upper Division Clerk-I Sr. Doc. Assistant Shri Dipankar Chakraborty Shri Jay Singh Balmiki Technical Superintendent Conservancy Supervisor Shri Amit Kr Harijan Shri Prabir Kr Guria Helper-E (Sweeper) Helper-E Smt. Sakhi Mondal Shri Prabir Das Helper-E Senior Technician Shri Gautam Chakraborty Shri Sonai Sardar Helper-E Helper-E Shri Hari Kishan Ray Shri Ramesh Ch Harijan Conservancy Supervisor Conservancy Supervisor Shri Munna Balmiki Shri Ratan Chandra Paul Helper-D (Sweeper) Sweeper, Contractual Shri Rakesh Kr Balmiki Shri Samir Ranjan Mistry Helper-E Sweeper, Contractual Shri Gopal Chandra Ghosh Shri Sajal Barua Pump Operator, Contractual Helper-E Shri Sweta Kishor Behura Shri Sandip Mukherjee Senior Record Keeper-B Jr. Store Keeper Shri Swapan Kr. Ghose Shri Rana Biswas Manager cum Salesman Mali, Contractual Shri Biplu Barua Shri Kamal Das Sr. Record Keeper-B Book Shorter Shri Arjun Seal Shri Goutam Naskar Sweeper, Contractual Sweeper, Contractual Shri Suresh Chandra Ghosh Shri Madhab Pusti Upper Division Clerck Mali, Contractual Shri Ramesh Pratap Singh Shri Swastik Sinha Mali, Contractual System & Network Administrator (Contractual)

206 THEORETICAL PHYSICS

Shri Bhudeb Ghosh Shri Sujit Kr Mukherjee Assistant Registrar-I Technical Superintendent Shri Subrata Balti Shri Bikash Darjee Technical Superintendent Helper-E Shri Suresh Mondal Technical Assistant-B

SOLID STATE PHYSICS

Shri Subrata Pal Shri Sujit Kr Das Assistant Registrar-I Technical Superintendent Shri Prabir Kr Roy Shri Ajit Pandit Technical Superintendent Helper-E Shri Niranjan Kurmi Technical Assistant-B

SPECTROSCOPY

Smt. Mridula Majumdar Shri Narayan Ch. Barik Assistant Registrar Technical Assistant-B Shri Chandra Sekhar Naskar Technical Assistant-B

MATERIALS SCIENCE Shri Tarun Kr Kabasi Shri Rajendra Prosad Mandal Assistant Registrar Technical Assistant-B Shri Subhasish Guha Roy Helper-E

PHYSICAL CHEMISTRY Smt Ujwala Das Shri Joydeb Mondal Technical Assistant-B Technical Assistant-A Shri Babu Chandra Technical Assistant-B

INORGANIC CHEMISTRY

Shri Tamal Chakraborty Shri Arup Kr. Nath Assistant Registrar-II Technical Superintendent Shri Prabitra Majumder Shri Sajal Barua Technical Superintendent Helper-E Shri Tarak Nath Helper-E

207 ORGANIC CHEMISTRY

Shri Bani Brata Roy Shri Arunasish Bhattacharya Technical Superintendent Assistant Registrar-II Smt. Mahua Bhattacharya Shri Asish Kumar Pal Assistant Registrar Technical Superintendent Shri Ranjit Kumar Dey Smt Aparna Das Technical Superintendent Helper-E

BIOLOGICAL CHEMISTRY

Shri Shovon Mallick Shri Gour Chandra Bairagi UDC-I Helper-E Shri Prosenjit Ghosh Contractual

POLYMER SCIENCE UNIT

Shri Amit Chakraborty Shri Panchu Gopal Chakraborty Assistant Registrar-II Technical Superintendent Shri Siddhartha Mistry Helper-E

ENERGY RESEARCH UNIT Shri Dipankar Majumdar Shri Mahadeb Das Technical Superintendent Helper-A (Contractual)

RCAMOS

Shri Bijan Krishna Chandra Technical Assistant-A

CENTRE FOR ADVANCED MATERIALS Shri Utpal Chakraborty Shri Partha Pratim Sen Assistant Registrar-I Pump Operator, Contractual

INDIAN JOURNAL OF PHYSICS Dr. Swapan Deoghuria Shri Manoj Behura Senior System Analyst Upper Division Clerck

ACADEMIC OFFICE

Shri Subhasish Sinha Smt. Saswati Bhattacharya Technical Superintendent Assistant Shri Subhasish Basu Shri Soumen Ghosh Technical Assistant-B Office Superintendent Shri Bibhas Roy Shri Abhra Paul Helper-E System & Network Administrator (Contractual)

208 LIBRARY

Shri Chanchal Kr. Das Dr. N. Nageswaran Library In-charge Librarian Smt Sarmistha Roychaudhury Shri Swapan Kr. Datta Doc. Superintendent-I Doc. Superintendent-I Shri Ranjit Ray Shri Sankar Kr. Chanda Sr. Doc. Assistant Doc. Assistant Shri Basudev Dafadar Shri Sukhendu Bikash Mishra Doc. Superintendent Doc. Assistant

CENTRAL SCIENTIFIC SERVICES

Shri Nirmalya Dutta Shri Sumit Ray Technical Officer-II Technical Officer-I Shri Swapan Kr. Sarkar Shri Pijush Kumar Das Technical Officer-II Technical Superintendent Dr Sasanka Maji Shri Tapas Bala Technical Officer-II Technical Superintendent Shri Tapash Kr. Das Shri Satinath Paul Assistant Registrar-I Technical Superintendent Shri Subrata Ghosh Dr Bholanath Mondal Asst. Registrar-II Technical Officer Shri Sridip Kumar Bera Shri Mithu Mondal Technical Assistant-B Helper-E Shri Supriya Chakraborty Shri Partha Mitra Technical Officer Technical Officer-II Shri Sachin Das Shri Indranath Bhowmik Technical Officer-I Technical Officer-II Shri Sutapesh Dutta Shri Sandip Sarkar Technical Officer-II Technical Officer-II Dr. Manash Kr Ghosh Shri Arup Kr. Banerjee Technical Officer-II Technical Officer-I Smt. Sipra Ghosh Shri Arunim Pal Technical Superintendent-I Technical Assistant-B Shri Sanjib Naskar Shri Subir Sikder Technical Officer Technical Officer Shri Ranajit Sardar Shri Tapash Kr. Dutta Technical Superintendent Technical Superintendent-I Shri Prosad Kr. Modak Shri Subrata Das Technical Officer Technical Officer Smt. Champa Bag Shri Rabindra Nath Banik Technical Superintendent Technical Superintendent Shri Chanchal Kr. Das Shri Gautam Das Technical Superintendent Technical Superintendent Shri Sanjay Kumar Sarkar Shri Chanchal Kr. Das Technical Asst-B Technical Superintendent Shri Tapas Kr. Das Shri Sujit Bag Helper-E Helper-E Shri Suman Guchait Helper-A, Contractual 209 WORKSHOP

Shri Somnath Bandyopadhyay Shri Jhankarnath Ghosh Workshop Superintendent-II Technical Superintendent Shri Nishir Roy Shri Pratap Tarafder Technical Superintendent-II Technical Officer Shri Ashim Mullick Shri Sushanta Mistry Technical Superintendent-II Technical Superintendent Shri Ramesh Kumar Shri Partha Rana Technical Superintendent Technical Superintendent Shri Sankar Halder Shri Kageshar Karan Technical Superintendent Helper-E Shri Dharmendra Singh Jadav Shri Biswajit Saha Technical Superintendent Helper-E Shri Samar Krishna Paul Shri Prabir Mondal Technical Superintendent Helper-E Shri Shayam Sundar Prasad Shri Prabir Debnath Technical Superintendent Helper-E Shri Tarapada Maity Shri Goutam Das Junior Technician Helper-E Shri Manoj Saha Shri Thakurdas Biswas Helper-E Helper-E

CANTEEN

Shri Subhash Mondal Shri Bipad Sardar Wash Boy cum Bearer Wash Boy Cum Bearer Shri Sambhu Nath Mitra Smt Bishaka Barik Wash Boy cum Bearer Wash Boy cum Bearer Shri Tapan Kr Bera Cook

210

INDIAN ASSOCIATION FOR THE CULTIVATION OF SCIENCE

BALANCE SHEET AS AT MARCH 31ST, 2018 (Amount in Rupees) PARTICULARS SCHEDULE CURRENT YEAR PREVIOUS YEAR

CORPUS/CAPITAL FUND AND LIABILITIES

Corpus/Capital Fund 1 1,33,38,16,506.00 1,37,46,13,387.00 Reserves and Surplus 2 33,99,97,409.00 34,27,61,829.00 Earmarked/Endowment Fund 3 45,09,97,558.00 35,87,10,212.00 Secured Loans and Borrowings 4 - - Unsecured Loans and Borrowings 5 - - Deferred Creadit Liabilities 6 - - Current Liabilities and Provisions 7 27,72,41,842.00 10,23,34,537.00

TOTAL 2,40,20,53,315.00 2,17,84,19,965.00

ASSETS

Fixed Assets at written down value 8 1,60,38,84,140.00 1,39,02,81,992.00 Investments - For Earmarked/Endowment Fund 9 1,13,400.00 1,13,400.00 Investments - Others 10 - - Current Assets, loans, Advances etc 11 79,80,55,775.00 78,80,24,573.00 Miscellaneous Expenditure (to the extent not written off or adjusted)

TOTAL 2,40,20,53,315.00 2,17,84,19,965.00

Significant Accounting Policies Note. 1 Schedule 1 to 23 forming Part of Accounts As per our attached report of even date.

For, K. Sharma & Co. Chartered Accountants FRN No 304025E

A.K. Chakraborty Partner Membership No. 014590

Sd/ Purbasha Banerjee Sd/. S. Bhattacharya Acting Registrar Director, IACS IACS, Kolkata - 700 032 Jadavpur, Kolkata - 700 032

212 INDIAN ASSOCIATION FOR THE CULTIVATION OF SCIENCE

INCOME AND EXPENDITURE ACCOUNT FOR THE YEAR ENDED MARCH 31ST, 2018 (Amount in Rupees) PARTICULARS SCHEDULE CURRENT YEAR PREVIOUS YEAR

INCOME

Income form Sales/Services 12 10,03,319.00 20,63,791.00 Grants/Subsidies 13 81,75,94,000.00 71,57,76,441.00 Fees/Subscriptions 14 6,63,113.00 1,96,335.00 Income from Investments (Income on Investment from 15 30,22,272.00 30,99,623.00 Earmarked/Endowment Funds transferred to funds) Income from Royalty, publication, etc. 16 34,48,465.00 32,71,569.00 Interest Earned 17 1,51,75,818.00 94,75,553.00 Other Income 18 27,79,284.00 12,79,157.00 Increase/Decrease in stock of Finished goods and work- 19 in-progress Overhead money received from Project 18,22,736.00

TOTAL (A) 84,36,86,271.00 73,69,85,205.00

EXPENDITURE

Establishment Expenses 20 81,61,64,563.00 52,36,10,557.00 Other Administrative Expenses etc. 21 13,46,48,453.00 14,14,72,735.00 Expenditure on Grants & Subsidies 22 1,77,769.00 88,470.00 Consumables 3,20,37,690.00 3,02,61,236.00 Prior Period Expenses Annual Maintenance Expenses 2,02,81,665.00 1,37,56,136.00 Overhead money received from Project 22,86,630.00 Depreciation (Net total at the year end-corresponding to Sch.8) 9,50,36,308.00 9,30,07,232.00 Overhead Money Transferred to IACS Overhead A/C as per Sch 3

TOTAL (B) 1,10,06,33,078.00 80,21,96,366.00

Balance being excess of Income over Expenditure (A-B) (25,69,46,807.00) (6,52,11,161.00) Transfer to Special Reserve (Specify) Transfer to/from General Reserve

BALANCE being Surplus (DEFICIT) Carried to Corpus / Capital Fund (25,69,46,807.00) (6,52,11,161.00)

For, K. Sharma & Co. Sd/ Purbasha Banerjee Chartered Accountants Acting Registrar FRN No 304025E IACS, Kolkata - 700 032

A.K. Chakraborty Sd/. S. Bhattacharya Partner Director, IACS Membership No. 014590 Jadavpur, Kolkata - 700 032

213 INDIAN ASSOCIATION FOR THE CULTIVATION OF SCIENCE

RECEIPTS AND PAYMENTS ACCOUNT FOR THE YEAR ENDED MARCH 31ST, 2018 (Amount in Rupees) RECEIPTS CURRENT YEAR PAYMENTS CURRENT YEAR

Opening Balance Expenses 1. Bank Balances : a) Establishment Expenses With Scheduled Banks: (corresponding to Schedule-20) 81,61,64,563.40 b) Administrative Expenses a) General : (corresponding to Schedule-21) 13,46,48,453.12 Current Account with : c) AMC for Laboratories - General 2,02,81,664.87 SBI, Jadavpur Univ. 16,50,184.74 d) Consumables - General 3,20,37,689.76 SBI, Kolkata Main 4,33,427.00 e) Revenue Expenses on A/C of Project 13,10,41,942.00 SBI, Jadavpur Univ. Flexi A/C f) Revenue Expenses on A/c of TRC 69,77,743.38 Union Bank Ballygunj Br. (5,96,05,607.82) Contribution to Medical Scheme : TRC 500.00 Union Bank Main Branch 8,58,11,483.00 Income Tax Deducted (194C) : TRC 16,715.00 Sales Tax Deducted At Source : TRC 5,175.00 Labour Welfare Cess : TRC 1,725.00 Security Deposit : TRC 17,251.00 Income Tax Deducted From Salary : TRC 14,060.00 b) Project Fund: Payments made against fund for various projects Current Account with: Expenses incurred for Spl. End. Fund - IACS SBI, Jadavpur Univ. 65,23,051.00 (corresponding to Schedule-22) 1,77,769.00 Cheques in hand Investments and Deposits made Union Bank - Ballygunj Br. 15,46,25,046.00 Out of Earmarked/Endowment funds Others (to be specified) c) TRC A/c: TDR with SBI -(Fixed Deposit with Bank) Union Bank Ballygaunge Branch (8,62,26,327.00) Union Bank Ballygaunge Branch -Fexi A/C 16,73,80,000.00 2. Cash Balances : a) General : Out of Own funds (Investments-Others) Imprest Cash 5,60,000.00 TDR with Union Bank Cash in hand Income Tax Receivable A/c TRC Grants Received : Expenditure on Fixed Assets & Capital 1. Central Government - Plan 1,00,24,96,000.00 Work-in-Progress 13,70,03,830.34 Non-Plan 1,23,725.00 Purchase of Fixed Assets 17,43,99,044.00 2. State Government - Plan 2,15,84,000.00 Expenditure on Capital Work-in-Progress 8,81,28,236.00 Non-Plan 47,66,275.00 Capital Expenditure Account Project

TOTAL 1,30,01,21,256.92 TOTAL 1,54,09,16,361.87

Refund of Surplus Money/Loan Grant received on account of Project 23,09,41,249.00 To the Government of India To the State Government To the other providers of funds Grant received on A/C TRC 21,42,00,000.00 Infrastructure A/c TRC (Deposit with CPWD) 2,00,00,000.00 Equipment A/c TRC 14,04,73,804.08

214 INDIAN ASSOCIATION FOR THE CULTIVATION OF SCIENCE

RECEIPTS AND PAYMENTS ACCOUNT FOR THE YEAR ENDED MARCH 31ST, 2018 (Amount in Rupees) RECEIPTS CURRENT YEAR PAYMENTS CURRENT YEAR

Interest Received : General A/C’s: Amount Borrowed Interest on TDR (Project) 51,74,355.00 Term Deposit Interest on House Building 12,03,198.00 Any other receipts Interest on Research Endowment Fund 20,471.03 General A/C’s : (Loans and Advances) Interest on Vehicle Advance 40,701.00 Advance - General 2,34,18,621.00 Interest on TDR against Margin Money 26,56,320.00 Advance - LTC 29,80,886.00 Interest on Computer Advance 40,351.00 Advance - Medical Interest on Security Deposit (CESC) Advance - Vehicles 60,150.00 Interest on TDR on Short Term Deposit 1,11,73,239.00 Advance - Computer 39,957.00 Interest on Term Deposit A/c - TRC 83,00,151.00 Advance - Puja 16,91,000.00 Interest on TDR against Margin Money - TRC 49,45,191.00 Advance - House Building 1,41,269.00 Other Income: Income from Sales and Advance - A/c TRC Services General A/C’s : Accounts Receivable 89,56,815.00 Analytical Charges 8,03,075.00 Contribution to GSLI 2,52,800.00 Sale of Liquid Nitrogen 85,130.00 Security Deposit by IACS Photo Copy charges 1,846.00 TDR with Union Bank 1,61,16,20,000.00 Income from Liquidated damage 23,863.00 TDR with SBI Miscellaneous Income 16,63,726.00 Margin Money A/c TRC Hall Rent 89,660.00 Admission Fees For Int. Ph.D. 10,02,035.00 S & T Consultancy 6,63,113.00 Garage Rent (Basundhara) 24,000.00 Overhead money received from Project 22,86,630.00 Ordinary Membership Subscription Imprest Cash addition Income from TDS Refund 62,009.00 Margin Money 8,14,22,462.00 Creche Receipts 17,900.00 Income Tax Receivable (TDS on A/C of S&T 2,132.00 Consultancy) Rent For Guest House 95,368.00 Advance - Project Overhead from Project TOTAL 1,78,33,48,207.95 TOTAL 3,43,42,62,887.95

Income from Technoprenureship TDR - Project Hostel seat rent 29,77,801.00 Margin Money (Project) Publication Income - IJP 34,48,465.00 Unclaimed GPF Income from Scientific & Technical Advance for TRC Project A/C CPWD Consultancy Analytical Charges - Project General A/C’s (Current Liabilities) Amount Borrowed Caution Money - Integrated Phd. 21,000.00 Earnest Money 5,12,044.00 Any Other Receipts Security Deposit from Contractors 17,75,954.00 11,27,000.00 General A/C’s (Loans and Advances) Security Deposit A/C Project: Advance General 2,48,04,411.55 Current Liabilities written Back Advance - LTC 30,77,630.00 Earnest Money A/c TRC Advance - Medical - Secutiry Deposit A/c TRC Advance - Vehicles 81,918.00

215 INDIAN ASSOCIATION FOR THE CULTIVATION OF SCIENCE

RECEIPTS AND PAYMENTS ACCOUNT FOR THE YEAR ENDED MARCH 31ST, 2018 (Amount in Rupees) RECEIPTS CURRENT YEAR PAYMENTS CURRENT YEAR

Advance - Computer 1,16,444.00 General A/C’s (Other Liablities) Advance - Puja 17,46,000.00 General Fund 1,62,140.00 Advance - House Building 21,23,358.00 GST Liability of other A/C paid from general 2,01,367.00 fund Advance received on other A/C of General 36,922.00 fund House Building Loan from Union Bank 41,48,537.00 Margin Money A/C TRC 2,33,13,419.00 Income Tax Deducted from Salary 4,08,39,432.00 Income Tax Deducted U/S 194C 11,39,205.00 Accounts Payable 1,06,94,662.00 Income Tax Deducted U/S 194J 18,36,337.00 Contribution to GSLI 2,51,695.00 Income Tax Deducted U/S 195 Security Deposit by IACS Insurance Premium under SS Scheme 36,96,150.50 TDR with Union Bank 1,51,89,50,000.00 Professional Taxes 7,11,080.00 TDR with SBI Profession Tax (Project) Unallocated Receipts - Project SAE Co-operative Credit Society 1,60,76,421.00 Imprest Cash A/C TRC 20,000.00 SAE Benefit Society 29,200.00 Margin Money SAE Provident Fund 5,44,21,824.00 Performance Security Deposit - Project 7,58,200.00 Sales Tax Deducted from Contractors 4,27,154.00 Advance - Project 24,51,704.00 Labour Welfare Cess 1,50,836.00 TDR - Project 3,96,00,000.00 Attachment of Pay Margin Money (Project) 3,37,30,344.00 Service Tax 6,90,425.00 Goods & Service Tax 16,22,769.00 Interest on TDS Contribution to GSLI - Project Deputation Remittance 6,16,437.00

TOTAL 3,45,14,94,259.50 TOTAL 3,56,45,05,122.45

Hostel Seat Rent - Project Outstanding Liabilities (24,60,23,988.00) Hostel Seat Rent - Project 9,165.00 General A/C’s (Current Liabilities) Income Tax (Project) 9,869.00 Caution Money - Integrated Phd. 1,05,000.00 Contribution to GSLI - Project Earnest Money 8,72,242.00 Unallocated Payments - Project Security Deposit from Contractors 13,57,183.00 CMS (Project) Unclaimed GPF Grant transferred to TRC from Project 7,22,00,000.00 Closing Balances: General A/C’s (Other Liabilities) 1. Bank Balances: General Fund With Scheduled Banks: House Building Loan From Union Bank 41,48,537.00 a) General : Income Tax Deducted from Salary 4,06,12,426.00 Current Account with: Income Tax Deducted U/S 194C 11,97,831.00 SBI, Jadavpur Univ. 17,60,747.23 Income Tax Deducted U/S 194J 19,12,077.00 SBI, Main Br. 4,33,427.00 Income Tax Deducted U/S 195 Union Bank Ballygunj Br. Insurance Premium under SS Scheme 36,95,931.50 Union Bank Main Branch 20,70,564.00 Professional Taxes 7,11,080.00 SBI, Jadavpur Univ. Flexi A/C SAE Co-operative Credit Society 1,60,76,421.00 SAE Benefit Society 29,200.00 b) Project Fund: SAE Provident Fund 5,44,21,824.00 SBI, Jadavpur Univ. Branch 33,56,784.20 Sales Tax deducted from Contractors 89,367.00 SBI, Main Branch Labour Welfare Cess 83,842.00 Union Bank Ballygunj Br. 17,79,31,752.80 Attachment of Pay

216 INDIAN ASSOCIATION FOR THE CULTIVATION OF SCIENCE

RECEIPTS AND PAYMENTS ACCOUNT FOR THE YEAR ENDED MARCH 31ST, 2018 (Amount in Rupees) RECEIPTS CURRENT YEAR PAYMENTS CURRENT YEAR

Profession Tax (Project) 800.00 c) TRC A/c: Service Tax 15,98,677.00 Union Bank Ballygunj Br. (26,84,539.46) Goods & Service Tax 15,12,152.00 Union Bank Flexi 16,71,10,000.00 Security Deposit A/c TRC Deputation Remittance 6,16,437.00 Income Tax Receivable (6,91,204.00) Grant Receivable from Govt. of W.B. CMS - TRC Grant Receivable from Central Goverment Income Tax Salary TRC A/c Income Tax U/s 194C - TRC Sales Tax deducted from Contractor A/c - TRC Accrued Income from Publication 31,09,018.00

TOTAL 3,57,98,44,083.00 TOTAL 3,74,37,87,922.22

Income Tax (Project) Labour Welfare Cess A/c TRC 2. Cash Balances: Grant Receivable from Govt. of West a) General: Bengal Grant Receivable from Central Imprest Cash 7,09,605.00 Goverment A/c 5,25,00,000.00 Income Tax Receivable S & T 2,132.00 Cash in hand Accrued Income from Publication 32,77,569.00 Imprest Cash TRC Outstanding Liabilities CMS (Project) 3. Bank Balance - General (O/D) Bank Balance - Union Bank Flexi A/C 10,88,73,744.11 SBI - JU (Opening) (Closing) Union Bank Ballygunj Br.

TOTAL 3,74,44,97,528.11 3,74,44,97,527.22

Schedule 1 to 23 forming part of Accounts as per our attached report of even date

Sd/ Purbasha Banerjee Sd/ K. Sharma Sd/. S. Bhattacharya Acting Registrar for K. Sharma & Co Director, IACS Kolkata - 700 032 Chartered Accountants Kolkata - 700 032

217 INDIAN ASSOCIATION FOR THE CULTIVATION OF SCIENCE 218 SCHEDULES FORMING PART OF BALANCE SHEET AS AT MARCH 31ST, 2018

SCHEDULE 8 : FIXED ASSETS

SL PARTICULARS GROSS BLOCK DEPRECIATION NET BLOCK NO BALANCE AS ON ADDITION DURING DEDUCTION TOTAL DEPRECIATION DEPRECIATION TOTAL AS ON 01.04.2017 THE YEAR DURING THE YEAR AS ON 01.04.17 FOR THE YEAR DEPRECIATION 31.03.18

1 Land (Jadavpur) 31,55,11,000.00 31,55,11,000.00 31,55,11,000.00 2 Land (Baruipur) 32,42,45,000.00 2,28,37,598.00 34,70,82,598.00 34,70,82,598.00 3 Software - Oracle 2,44,13,559.00 85,25,290.00 3,29,38,849.00 1,42,20,150.00 86,73,632.00 2,28,93,782.00 1,00,45,067.00 4 Building and Sheds 30,44,88,061.00 30,44,88,061.00 17,59,41,626.00 1,28,54,644.00 18,87,96,270.00 11,56,91,791.00 Building and Sheds (Baruipur) 5 Residential Building 17,34,000.00 17,34,000.00 7,47,701.00 49,315.00 7,97,016.00 9,36,984.00 6 Plant & Machinery 66,85,38,508.43 8,48,24,638.28 75,33,63,146.71 45,07,36,836.00 3,90,32,099.00 48,97,68,935.00 26,35,94,211.71 7 Computers 11,71,54,327.25 44,15,763.28 12,15,70,090.53 10,74,49,014.00 71,47,917.00 11,45,96,931.00 69,73,159.53 8 Electrical Installation 8,29,72,086.74 21,79,186.04 8,51,51,272.78 4,86,13,418.00 53,17,239.00 5,39,30,657.00 3,12,20,615.78 9 Vehicles 40,69,975.00 40,69,975.00 16,42,090.00 3,64,183.00 20,06,273.00 20,63,702.00 10 Tubewell & W. Supply 40,17,026.00 16,900.00 40,33,926.00 17,38,171.00 2,28,731.00 19,66,902.00 20,67,024.00 11 Capital Work-in-progress (CPWD) 11,00,00,000.00 17,43,99,044.00 28,43,99,044.00 28,43,99,044.00 Sub Total 1,95,71,43,543.42 29,71,98,419.60 2,25,43,41,963.0 2 80,10,89,006.00 7,36,67,760 87,47,56,766.00 1,37,95,85,197.02 13 Furniture & Fixture (Incl. other 2,96,01,705.50 11,51,848.00 3,07,53,553.50 1,52,18,199.00 14,95,943.00 1,67,14,142.00 1,40,39,411.50 Furniture & Fixture) 14 Office Equipment 1,94,60,720.00 3,04,568.00 1,97,65,288.00 1,24,32,471.00 7,18,053.00 1,31,50,524.00 66,14,764.00 Sub Total 4,90,62,425.50 14,56,416.00 5,05,18,841.50 2,76,50,670.00 22,13,996.00 2,98,64,666.00 2,06,54,175.50 15 Books 50,96,96,101.42 2,04,911.00 50,99,01,012.42 29,68,80,401.00 2,12,91,816.00 31,81,72,217.00 19,17,28,795.42 16 Subscription to e-journal 1,25,43,127.74 1,25,43,127.74 6,27,156.00 6,27,156.00 1,19,15,971.74 Sub Total 50,96,96,101.42 1,27,48,038.74 52,24,44,140.16 29,68,80,401.00 2,19,18,972.00 31,87,99,373.00 20,36,44,767.16 Cumulative Total 2,51,59,02,070.34 31,14,02,874.34 2,82,73,04,944.7 1,12,56,20,077.00 9,78,00,728.00 1,22,34,20,805.00 1,60,38,84,139.68 Previous Year 2,34,92,77,511.0 16,66,24,559.0 2,51,59,02,070.0 1,02,95,42,831.00 9,60,77,246.00 1,12,56,20,077.00 1,39,02,81,992.00

Note: a) On the basis of the decision of the Finance Committee of IACS in its meeting held on 19.06.2007, the updated value of Fixed Assets has been adopted in the Final Accounts of 2006-07 b) Total amount of Depreciation calculated during the year has been charged to Income & Expenditure A/C Rs. 95036308/- and Rs. 2764420/- against Revaluation Reserve. c) Depreciation other than Books has been charged at the rate as provided by the Income Tax Act, Depreciation on books has been charged @ 10% p.a.

Sd/ Purbasha Banerjee Sd/ K. Sharma Sd/. S. Bhattacharya Acting Registrar for K. Sharma & Co Director, IACS Kolkata - 700 032 Chartered Accountants Kolkata - 700 032 K. SHARMA & CO. CHARTERED ACCOUNTANTS

INDEPENDENT AUDITORS’ REPORT

TO THE MANAGEMENT OF INDIAN ASSOCIATION FOR THE CULTIVATION OF SCIENCE

1. Report on the Financial Statements We have audited the accompanying financial statements of INDIAN ASSOCIATION FOR THE CULTIVATION OF SCIENCE (IACS), which comprise the Balance Sheet as at March 31st, 2018 and the Income & Expenditure Account and Receipts &Payments Accounts for the year ended, and a summary of other explanatory notes and information.

2. Management’s Responsibility for the Financial Statements Management is responsible for the preparation of these financial statements that give a true and fair view of the financial position, financial performance of the Institute in accordance with the generally accepted accounting practices followed in India. This responsibility includes the design, implementation and maintenance of internal control relevant to the preparation and presentation of the financial statements that give a true and fair view and are free from material misstatements, whether due to fraud or error.

3. Auditor’s Responsibility Our responsibility is to express an opinion on these financial statements based on our audit. We conduct our audit in accordance with the standards in Auditing issued by the Institute of Chartered Accountants of India. Those standards require that we comply with the ethical requirements and plan and perform the audit to obtain reasonable assurance about whether the financial statements are free from material misstatement. An audit involves performing procedures to obtain audit evidence about the amounts and disclosures in the financial statements. The procedures selected depend on the auditor’s judgement, including the assessment of the risks of material misstatement of the financial statements, whether due to fraud or error. In making those risk assessments the auditor considers internal control relevant to the Association’s preparation and fair representation to the financial statements in order to design audit procedures and are appropriate in the circumstances. An audit also includes evaluating the appropriateness of accounting policies used and the reasonableness of the accounting estimates made by the management as well as evaluating the overall presentation of the financial statements. We believe that the audit evidence we have obtained is sufficient and appropriate to provide a basis of our audit opinion.

4. Opinion 1) Contrary to Accounting Convention and Concept as stated under Significant Accounting Principles, Policies and Practices followed by IACS, it has been observed that the books of accounts have been maintained on cash basis except in cases of:- (i) Accrued income from IJP (ii) Income Tax receivable (iii) Outstanding liabilities for expenses (iv) Grant Receivable

2) The Fixed Assets Register has not been updated for the year ended 31.03.18and no physical verification of fixed assets was done during the year under audit.The Fixed Assets Register has only been prepared till the year ended 31.03.17. The

219 Physical Verification reports were not prepared by the Association, and hence they were not available for the purpose of verification.

3) There is a system of pre-audit of all expenses made by the Association. However there is a scope for improvement of the Internal Control Procedures, for better compliance with the Annual Budget.

4) During the year, the IACS received Non-plan Grant from Government of West Bengal amounting to a total of Rs 48,90,000. Out of that, Rs 1,23,725 has been transferred and shown under the head Non-Plan Grant from Central Government. Necessary disclosures should be provided by the Association in the Financial Statements, explaining the reasons for transferring the amount of grant to another head.

5) Outstanding Liability for Expenses, relating to General accounts, comprises of the following amounts:- Campus Safety Security Charges: 12,24,989.00 Maintenance Charges other than Building: 8,43,014.00 GST Liability relating to INITIATIVE A/c: 2,01,367.00 AMC-Electricals: 7,85,249.00 Liability for Arrear Establishment Salary: 12,58,12,051.00 Liability for Leave Encashment: 78,27,141.00 Liability for Arrear Pension: 4,00,00,000.00 Provision for Arrear for commutation of Pension, etc: 8,65,00,000.00 Electricity Charges: 37,51,581.00 26,69,45,392.00

No provision has been made for any expenditure incurred for the year. All expenditureincurred or income received has been accounted for on cash basis except for the few heads already mentioned in Point 1 of our Opinion paragraph. Necessary steps should be taken by the Association to make provisions for the expenditure incurred, especially of recurring nature, if any, in the Financial Statements.

6) Following amounts relating to General accounts, are receivable from various parties, and are lying due/unadjusted for more than a year:-

PERSON / PARTY DATE AMOUNT ( `) National Insurance Company Not known 30,069 Contribution to Project A/c - Dr.Sudip Malik 24.03.16 10,000 Receivable from Project A/c for Custom Duty 2015-16 3,15,493 and Entry Tax Dues from Project A/c Not known 8,970

Necessary follow-up action should be taken to arrange for proper realization of dues from the respective parties relating to the above balances. In case the realization of the above amounts is uncertain, necessary provisions should be made for doubtful debts. 7) Accounts Payable balance, in case of General accounts, as on 31.03.18 includes the following balances which are lying unadjusted/unpaid for more than a year:-

PERSON / PARTY DATE AMOUNT ( `) SEC Conference Not known 1,15,015 Sri ManasRanjanChakraborty Not known 8,010 Amar Singh Harijon 26.02.10 7,386 DST (New Delhi) 28.09.11 32,637 DST (New Delhi) 28.09.11 1,25,000 SanjibNaskar 05.08.14 7,18,152 Indian statistics 12.01.15 51,451 Contribution to NPS A/c Sri Sanjib Naskar Not known 2,33,674 KalidasMondal 17.02.17 19,554

In most of the cases specified above, the balances are lying unadjusted for more than 2 years. Necessary follow-up action should be taken to arrange for proper payments to the respective parties relating to the above balances. 220 8) In course of examination of Earnest Money deposited with the Association, shown under Current Liabilities, following instances were observed where the amount deposited is lying unadjusted for more than 5 years:-

PERSON / PARTY DATE AMOUNT ( `) A.P.Enterprise 21.05.13 2,700 Data Craft IndiaPvt. Ltd. 03.11.10 3,00,000 Gati ltd. 17.01.12 10,000 Labguard India (P) Ltd. 17.10.11 97,000

Necessary steps may be taken to follow-up with the above parties and adjustments may be made.

9) In course of examination of Security Deposit made with the Association, shown under Current Liabilities, following instances were observed where the amount deposited is lying unadjusted for more than 5 years

PERSON / PARTY DATE AMOUNT ( `) Dimension Data Ind 31.08.12 9,70,000 Dimension Data Ind 26.12.12 33,629 Dimension Data Ind 26.12.12 8,186 Loknath Enterprise 24.09.09 2,452 Mahendra Engineering 22.09.10 12,780 Mahendra Engineering 05.09.12 6,636 Taurus 29.07.08 30,263 Taurus 10.03.09 17,800

Necessary steps may be taken to follow-up with the above parties and adjustments may be made.

10) In the course of examination of Bank Reconciliation Statements relating to General Accounts, we observed the following:- (a) UBI – Flexi (Acc No. 301201110050002) (i) Old cheques amounting to a total of Rs 27,500/- are deposited by IACS, but not yet credited by the bank. These cheques are lying unadjusted for more than 9 months.

(ii) Postal Orders amounting to a total of Rs 90/- are deposited, but not credited by bank. The details are as follows:- DETAILS DATE AMOUNT ( `) IPO NO 69G 096567 15.01.18 50.00 IPO NO 11F 764646 05.03.18 10.00 IPO NO 02G 716627 23.03.18 20.00 IPO NO 23F 105194 23.03.18 10.00

(iii) Following amounts have been found wrongly credited by the bank:- DETAILS DATE AMOUNT ( `) PAD 19217 WNGLY DEBITTED 1.11.17 16,80,891.14 50002/1050003 49560TT0007317 DT 25/04/17 DEBITED 21.11.17 647.00 2/06/17 TOTAL 16,81,538.14

(iv) Following amounts have been found wrongly debited by the bank DETAILS DATE AMOUNT ( `) 49560PAD0012817 (PROJECT) DTD 4.10.17 60,51,307.00 4.10.17 49560TT00200717 2.11.17 164.39 TOTAL 60,51,471.39

221 (b) INITIATIVE Account (Acc No. 35514943352) (i) Amount of Rs 1,650/- was deposited through cheque no. 481432 dated 22.02.18, but not credited by bank. The amount is lying unadjusted for more than 3 months. (ii) Amount of Rs 15,930/- relating to RTGS (NIPER) dated 09.03.18 have been found as wrongly credited by bank.

(c) SBI – JU (Acc No. 11079699244) (i) Following cheques and IPOs were deposited, but not credited by bank:-

CHEQUE/IPO DATE AMOUNT ( `) Chq 256213 12.04.17 500.00 Chq 500997 12.04.17 500.00 Chq 050481 12.04.17 500.00 IPO 23F059604 10.03.17 10.00 IPO 38F111221 10.03.17 10.00 IPO 23F110895 24.07.17 10.00

(ii) Following amounts have been found wrongly credited by bank:-

DETAILS AMOUNT ( `) Chq 389998 dt 4.06.08 500.00 Chq 854980 dt 30.11.08 400.00 Amtdt 18.10.11 2,000.00 Amtdt 13.04.12 2,500.00 Chq 374775 dt 2.04.15 45,900.00 Amtdt 10.06.15 5,185.00 Chq 46943 DD dt 15.12.15 100.00

(iii) Following amounts have been found wrongly Debited by bank:-

DETAILS AMOUNT ( `) Amtdt14.02.15 5,278.50 Amtdt 3.05.17 1,100.00 Amtdt 13.12.17 70.00

(iv) Following cheques and RTGS were issued for payment, but not Debited by bank, lying unadjusted for more than 12 months

CHEQUE/IPO DATE AMOUNT ( `) RTGS 17.11.16 1,369.00 RTGS 24.11.16 4,218.00 RTGS 24.11.16 8,423.00 Chq 458646 04.01.17 1,450.00

Necessary steps may be taken by the Institute to adjust the above amounts, or write off the amounts where adjustment cannot be made in case of very old amounts.

11) In case of General Advances, there were instances where advances are pending unadjusted for more than 2 years, which needs to be followed up with the respective parties and adjusted. Some instances are as follows:-

PERSON/PARTY DOCUMENT REF/ DATE AMOUNT ( `) DEPARTMENT CHEQUE NO Smt. Jhimli Mukherjee 600763 17.10.12 37,500 Administration Dr.Arnabsen 605497 19.11.14 12,000 Theoretical Physics Prof.Sourav Roy 602494 05.08.13 98,465 Administration Dr.Biman Jana 605196 25.09.14 49,083 Physical Chemistry

222 PERSON/PARTY DOCUMENT REF/ DATE AMOUNT ( `) DEPARTMENT CHEQUE NO IABS 2015 605890 29.01.15 1,00,000 Conference Canon India 1753 30.06.15 15,000 Administration Debajyoti Das 1742 30.06.15 2,343 Administration Debajyoti Das 1743 30.06.15 1,32,847 Administration Eureka Forbes 1745 30.06.15 9,200 Administration Horiba JobinYvon 28201516202 26.12.16 44,426 Central Scientific ParthaChaudhuri 1761 30.06.15 5,817 Administration Quantum Global 464834 31.03.16 1,60,300 Not known Prakash Freight 1701 30.06.15 1,69,350 Administration Prasant Chandra Singh 1712 30.06.15 1,88,947 Administration SomansuSekhar Das 457254 31.08.15 8,000 Administration Prof.Sourav Roy 1766 30.06.15 8,33,652 Administration Sysbiosis 1759 30.06.15 1,17,550 Administration TATA 1732 30.06.15 24,99,495 Administration Prof.Tarun Kr. Mondal 457257 01.09.15 50,000 Central Scientific Uma Service Station 1733 30.06.15 30,000 Administration

12) We also observed that Superannuation Fund contributions and Pension Fund contributions made by the IACS General Fund are calculated on adhoc basis. The basis or calculations to arrive at the amount which is transferred to the Superannuation Fund or the Pension Fund is not prepared or shown by the respective authorities.

13) In case of Project Accounts, balances in certain heads of accounts pertaining to previous years had remained static in the year 2017-18. Necessary steps may be taken to adjust the above. A few instances are as follows: DETAILS BALANCE ( `) DST-WOS Quantum...Gases (SD) (1,887.33) DST-WOS—Develop....Hydrogen(SM) (21,068.00) Conducting...... Stimulation (Rupali) (58,599.00) Probing....Technique (PriyaRajdev) 6,472.23 DAE/ Probing...... Materials(S. Majumdar) 68,477.27 Developing...... Metallogels (PSD) (3,66,469.87) Design...... Renewable Sources (AB) (29,720.41) Exploring....Semi Conductors(Dipankar B.) 2,70,875.03 To study.....Drugs(A.Banerjee) 3,05,305.00 The Exploratory visit (G.P.Das) 20,960.00

14) In case of Project Accounts, there is an instance where advance is pending unadjusted for more than 1 year, which needs to be followed up with the respective party and adjusted. The details are as follows:-

PARTY NAME ORDER NO. NAME OF THE AMOUNT PAID NAME OF PROJECT BUDGET FACULTY ( `) HEAD Dr. Bimalendu Deb Letter/RTGS dtd. Dr. Bimalendu Deb 25,000.00 SERB/Theoritical....Potential Travel 12.05.17

15) In the course of examination of Bank Reconciliation Statements of SBI, Jadavpur University branch, relating to Project Accounts, we observed the followingcheques were issued for payment, but not debited by bank, lying unadjusted for more than 2 years:-

CHEQUE NO. DATE AMOUNT ( `) 769803 09.03.15 330.00 770033 24.04.15 3,740.00 768367 28.07.15 7,175.00

223 Necessary steps may be taken by the Institute to adjust the above amounts, or write off the amounts where adjustment cannot be made in case of very old amounts.

In our opinion and to the best of our information and according to the explanation given to us, the financial statements, together with the notes mentioned above, give a true and fair view in conformity with the accounting principles generally accepted in India.

i) In case of the Balance Sheet of the State of Affairs of the INDIAN ASSOCIATION FOR THE CULTIVATION OF SCIENCE as at 31st March, 2018.

ii) In case of Income & Expenditure Account, of the Excess of Income over Expenditure for the year ended on that date.

iii) In case of Receipts and Payments Accounts, of the transactions during the year ended on that date.

Date:17.08.18 For K. Sharma & Co. (A. K. Chakrabarty) Membership No.-014590 Chartered Accountants Place:Kolkata FRN - 302045E Partner

REPORT ON OTHER LEGAL AND REGULATORY REQUIREMENTS

As required on the above matters, we report that:

a) We have sought and obtained all the information and explanation which to the best of our knowledge and belief were necessary for the purpose of our audit. b) In our opinion proper books of accounts as required by law have been kept by the Association so far as appears from our examination of those books. c) The Balance Sheet and the statement of Income and Expenditure dealt with by this report are in agreement with the books of account. d) In our opinion, the aforesaid financial statements comply with the accounting standards.

Date: 17.08.18 For K. Sharma & Co. (A. K. Chakrabarty) Membership No.- 014590 Chartered Accountants Place:Kolkata FRN - 302045E Partner

NOTE: 1 SIGNIFICANT ACCOUNTING POLICIES, PRACTICE AND CONTROL

A. ACCOUNTING CONVENTION AND CONCEPT: The financial statements are prepared under the historical cost convention on accrual basis, excepting retirement benefits, including grants (both recurring and non recurring) from the Government of India and Government of West Bengal.

B. ALLOCATION OF RECEIPTS AND PAYMENTS: The allocation of Receipts and Payments, Income and Expenditure between plan and non-plan heads have been made by the Association as per Association’s budget and practice. Grant from the Government for both Plan & Non-Plan expenditure and Plan & Non-Plan Grant from the Government of West Bengal during the financial year are credited to Income & Expenditure Account, except the Capital grant which has been directly transferred to Corpus Fund.

224 C. FIXED ASSETS AND CAPITAL WORK IN PROGRESS: i) Fixed Assets and Capital work in progress are stated at cost of acquisition or construction less accumulated depreciation. Cost of acquisition is net of interest on capital advance and is inclusive of freight, duties, taxes & other incidental expenses. ii) Capital work in progress including building under construction, plant and machinery, equipment pending installation and architect fees are directly debited to the respective assets head. iii) Provision for Stamp Duty payable for immovable property is made as and when conveyance, deed for the properties is executed and the liability is ascertained. iv) Grant received towards specific fixed asset are adjusted from the Gross Value of the assets or capital work in progress, as the case may be. '‰¥‰º"¥™|$¬»ˆ#{¦|ˆˆ„ ˆ!„‘`!„`#{ ‹

D. DEPRECIATION/ AMORTIZATION: Depreciation on Fixed Assets is provided on “Written Down Value Method” at the rates and in the manner prescribed in the Income Tax Act, 1961. Depreciation on addition of Fixed Assets is considered on half-yearly basis.

E. IMPAIRMENT OF ASSETS: An asset is treated as impaired when the carrying amount of assets exceed the recoverable value and impairment loss is charged to the Income and Expenditure Account in the year in which an asset is identified as impaired.

F. RETIREMENT BENEFITS: i) Gratuity of Employee is accounted for on cash basis based on valuation made by the department as per rules and provisions of Payment of Gratuity Act. ii) Leave Salary Payable to Employee is accounted for on cash basis based on valuation made as per extent rules of the Association.

G. SUBSCRIPTION FOR LIBRARY: Subscription paid for library journals are booked to Library Account at the time of payment irrespective of receipt of the related journal.

H. INCOME FROM GRANTS AND OTHER SERVICES: Grants received from Governments are accounted for as income of the Association. a) Recognition of Government Grants: Government Grants available to the Association are considered for the inclusion in accounts in accordance to AS 12, where: i) There is reasonable assurance that the Association will comply with the condition attached to them, and ii) Such benefits have been earned by the Association and it is reasonably certain that the ultimate collection will be made. b) Income from Other Services: Sales proceeds received consultancy and technical service, fees received and interest incomes are also treated as income of the Association.

I. NOTES ON ACCOUNTS: i) The Association grants House Building Loans as per laid down principles against suitable documentation at a prescribed rate of interest. Such interest is payable after repayment of the principal amount. ii) Fixed Asset register has been written up to 31.03.17. Updating of Fixed Assets is in the process. Physical verification of fixed assets has been carried out on year to year basis. iii) No known case of fraud has been there during the year ended on 31.03.18.

225 INDIAN ASSOCIATION FOR THE CULTIVATION OF SCIENCE

BUDGET AT A GLANCE

ACTUAL EXPENDITURE (AUDITED) PROJECTED BUDGET 2017-18 AS APPROVED EXPENDITURE 2017-18 BY F.C. DT-01/07/2016 2017-18 NON PLAN PLAN TOTAL NON PLAN PLAN TOTAL

ESTABLISHMENT Salary,Fellowship,Pension, 5,532.39 5,532.39 7,947.80 7,947.80 Superannuation,etc ESTABLISHMENT Other essential Establishment 849.82 849.82 1205.65 1205.65 expenditure (electricity,telephone, medical etc,) CONTINGENCIES (Office Expenses) 302.92 302.92 642.10 642.10

CONSUMABLES (Laboratory Expenses, Library, Workshop, Research 48.90 688.15 737.05 207.00 990.75 1,197.75 Publication, Civil Maintenance,etc.) TOTAL 48.90 7,373.28 7,422.18 207.00 10,786.31 10993.31

Books & Journals 127.48 127.48 270.00 270.00 Equipment & Research Facilities (including AMC for High Value 906.97 906.97 850.00 850.00 Equipment) Building (Works with CPWD and Development of Present campus & 1,744.00 1,744.00 500.00 500.00 Baruipur Campus) Land Baruipur Registration 228.38 228.38 Electrical augmentation ,etc. 21.79 21.79 175.00 175.00 Implementation of Open Acess 510.00 510.00 Publication Office Computerisation,Software/ 85.25 Digitisation of Old Record 85.25 300.00 300.00 Installation of Safety Measures 100.00 100.00 Science Outreach 300.00 300.00 Payment of Margin Money 814.22 814.22 Development of Baruipur Campus 2,000.00 2,000.00 Solar Panel at present Campus 5.00 5.00 100.00 100.00 GRAND TOTAL 48.90 11,306.37 11,355.27 207.00 15,891.31 16,098.31 RECEIPTS ACTUAL RECEIPT (AUDITED) PROJECTED BUDGET 2018-19 (EXPECTED FIGURES FOR 2017-18 2018-19 & 2019-20) NON-PLAN (A) PLAN (B) TOTAL (A+B) NON-PLAN (A) PLAN (B) TOTAL (A+B) Opening Balance 1127.49 1127.49 Government of India Grant received 10024.96 10024.96 150.00 13770.53 13920.53 for 2017-18 Government of India Grant receivable for 2016-17 525.00 525.00 Government of West Bengal 48.90 215.84 264.74 50.00 350.00 400.00 Interest from Deposits 138.29 138.29 Less: Closing Balance 725.21 725.21 TOTAL 48.90 11306.37 11355.27 200.00 14120.53 14320.53

Note: 1. IACS own generated Income of (Rs.74.67 Lakh + IJP 34.48 lakh)=109.15 Lakhs (including hostel seatRent Of Rs.29.77 Lakhs) not reflected in the above Budget. 2. Salary and Pension has been considered in the framework of 7th CPC

226 PROJECTED BUDGET 2018-19 AS PROJECTED REVISED BUDGET PROJECTED BUDGET 2019-20 APPROVED BY F.C. DT-29/05/2017 2018-19 NON PLAN PLAN TOTAL NON PLAN PLAN TOTAL NON PLAN PLAN TOTAL

8,116.81 8,116.81 12,635.74 12,635.74 10,969.13 10,969.13

1,237.11 1,237.11 1250.50 1250.50 1,498.92 1,498.92

590.29 590.29 520.75 520.75 624.90 624.90

200.00 991.31 1,191.31 50.00 962.38 1012.38 50.00 1,154.18 1,204.18

200.00 10,935.53 11135.53 50.00 15,369.38 15,419.38 50.00 14,247.14 14297.14

300.00 300.00 250.00 250.00 300.00 300.00

900.00 900.00 900.00 900.00 900.00 900.00

500.00 500.00 712.00 712.00 500.00 500.00

175.00 175.00 170.00 170.00 180.00 180.00 510.00 510.00 300.00 300.00 510.00 510.00

300.00 300.00 250.00 250.00 300.00 300.00 100.00 100.00 100.00 100.00 100.00 100.00 300.00 300.00 100.00 100.00 300.00 300.00

100.00 100.00 200.00 200.00 100.00 100.00 200.00 14,120.53 14,320.53 50.00 18,351.38 18,401.38 50.00 17,437.14 17,487.14 PROJECTED REVISED BUDGET PROJECTED BUDGET 2018-19 2019-20 (PROVISIONAL) NON-PLAN (A) PLAN (B) TOTAL (A+B) NON-PLAN (A) PLAN (B) TOTAL (A+B)

18001.38 18001.38 17087.14 17087.14

50.00 350.00 400.00 50.00 350.00 400.00

50.00 18351.38 18401.38 50.00 17437.14 17487.14

Sd/ Purbasha Banerjee Sd/ K. Sharma Sd/. S. Bhattacharya Acting Registrar for K. Sharma & Co Director, IACS Kolkata - 700 032 Chartered Accountants Kolkata - 700 032 227 PHOTO GALLERY RECREATIONAL ACTIVITY NOTES