30 SEPTEMBER 2007 285 High Impact Papers
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30 SEPTEMBER 2007 285 High Impact Papers Functional polymers from divinyl monomers via cyclodextrin host-guest chemistry ROSS-LINKED polymers find Chem. Soc., 128, 24 (2006), 7752- biology, and industries such as Ca wide range of applications 7753.] have developed a pharmaceuticals, food, cosmetic, such as ion exchange resins, methodology for selective perfumery, etc. adsorbents, molecularly imprinted polymerization of divinyl monomers In the methodology developed at polymers, supports for reagents in such as ethylene glycol NCL / IICT, the water insoluble organic synthesis, enzyme dimethacrylate and ethylene glycol divinyl monomers form an inclusion immobilization and drug delivery methacrylate 4-vinyl benzoate by complex with β-cyclodextrin and its systems. A sequential multi-step exploiting the principles of host- derivatives such as dimethyl β- approach, wherein, a soluble linear guest chemistry. cyclodextrin. The vinyl group polymer is first synthesized, isolated Cyclodextrins are torus shaped included in the cavity of β- and then cross-linked offers cyclic oligosaccharides produced as cyclodextrin does not participate in significant advantages in most a result of enzymatic degradation of polymerization. As a result, a divinyl applications. Therefore, there is a starch by the cyclodextrin monomer behaves as a monovinyl need to devise a one-step glucanotransferase enzyme. monomer. The polymerization methodology for the synthesis of Cyclodextrins form inclusion results in a solvent soluble linear soluble, linear and cross-linkable complexes with large number of polymer containing one vinyl double polymers. organic guest molecules. The bond per repeat unit. physical properties such as Such “vinyl” functional Mohan G. Kulkarni and his solubility, stability, volatility are polymers can be subsequently cross- colleagues Sunita S. Satav and modified without affecting the linked by free radical initiators or Rohini N. Karmalkar at National chemical structure of the guest by UV irradiation, to yield films, Chemical Laboratory (NCL), Pune, molecule. Cyclodextrins have been micro and nanoparticles as well as in collaboratrion with M. Nagraju shown to solubilize vinyl monomers graft copolymers. Such cross-linked and G.N. Sastry of Indian Institute and enable their polymerization in polymers may find application in of Chemical Technology (IICT), aqueous media. These inclusion various areas such as coatings, Hyderabad, [S.S. Satav, R.N. complexes have found numerous microelectronics, photoresists, Karmalkar, M.G. Kulkarni, M. practical applications in chemistry, molecularly imprinted polymers, ion Nagraju and G. N. Sastry, Am. exchange resins, as chromatography Water DMF / AIBN support, reagent in organic synthesis, drug delivery Inclusion complex systems and other Cyclodextrin Divinyl monomer Precipitate d biomedical Water applications. Seven patent applications are pending covering various applications of this EGMAVB-β-CD Linear polymer precipitated chemistry. (Molecular modeling) www.ncl-india.org 286 CSIR NEWS R&D Highlights NBRI developes ‘India Herbal Garden’ at WHO (Hq), Geneva HE National behind setting up the T Botanical herbal garden was to Research Institute popularize the usage of (NBRI), Lucknow, has Indian plants in health care developed an ‘India worldwide, as the garden Herbal Garden’ at the was to be set up in the Head Quarters of World premises of world’s top Health Organization, health related Geneva. Dr Anbumani international organization. Ramadoss, Minister for The garden has 24 beds, Health & Family Welfare, adjacent to the India Room Government of India, at WHO (HQ), having inaugurated the garden on herbs, used in Indian 16 May 2007 in the System of Medicine. presence of Dr Margaret On the occasion of its Chan, Director General, Dr Anbumani Ramadoss, Minister for Health & Family Welfare, inauguration, the Minister WHO. The garden, Government of India (extreme right) and Dr Margaret Chan, released a leaflet, prepared showcasing some of the Director General, WHO, inaugurating the India Herbal Garden by NBRI, describing the India’s medicinal plant background of the garden, wealth has been developed by NBRI through the Ministry of Health & its layout and short details of the with the financial support of Family Welfare, way back in 2003- herbs, including their usage. National Medicinal Plants Board, 04, had made a commitment to Speaking on the occasion, Dr M. New Delhi. It may be mentioned WHO to set up India Herbal Garden Chan, who herself is a Herbalist, that this is the first garden of its kind at WHO (Hq), Geneva. Later on, thanked the Indian Government for in WHO premises in Geneva. this responsibility was rendered to developing and donating the India The Government of India, NBRI in the year 2006. The idea Herbal Garden to WHO. She also The India Herbal Garden 30 SEPTEMBER 2007 287 R&D Highlights appreciated the hard work and efforts of NBRI in setting up the Garden. The Health Minister emphasized the future prospects of India’s rich biodiversity and traditional knowledge in grabbing the fast increasing global herbal market. He said that this garden, set up at WHO will have long term future prospects in popularizing the Indian system of medicine and herbal industry globally. Drs A.K.S. Rawat and S.K. Tewari, Scientists, NBRI who were also present on the occasion, briefed the august gathering about the propagation and medicinal uses of the herbs, planted in the garden. The officials including Permanent Representative and Deputy Permanent Representative from Permanent Mission Drs A.K.S. Rawat and S.K. Tewari with WHO Team of India to the United Nations were also present on at the India Herbal Garden the occasion. CECRI: Processes Licensed and Patents Filed/Granted HE processes licensed and patents filed by and patent granted to the Central Electrochemical Research TInstitute (CECRI), Karaikudi, during January — June 2007 include: Processes Licensed (process, licensee) • Decorative yellow and white bronze electroplating, M/s KM Gadia & Sons, Bangalore • Magnesium silver chloride seawater activated battery, M/s Tirven Industries, Hyderabad • Electrolytic defluoridation of drinking water, M/s Sandur Fluid Controls Private Limited, Bangalore Patents Filed in India (invention, inventors) • Preparation of l-aminianthroquinone derivatives useful as novel corrosion inhibitors for petroleum products transporting pipelines, N. Palanisamy, P. Subramanian, S. Maruthamuthu, S. Mohanan • Development of a digital and embeddable sensor for quantitative prediction of chloride ion, S.P. Manoharan, H. Dolli, J. Kennady, M. Ramakrishnan, A. Veluchamy • An improved process for the electrochemical preparation of benzaldehyde from benzyl alcohol, T. Raju, K. Kulangiappaar, M. Anbukilandainaathan, A. Muthukumaran • Development of conducting paint for aerospace applications, S. Azim, R.H. Sureshbabu, G. Venkatachari • An alternative proton conducting polymer electrolyte membrane and its application to fuel cells, A.K. Shukla, S. Pitchumani, P. Sridhar, A.K. Sahu, G. Selvarani, P.S. Khadke Patent Granted in India • A process for the preparation of an improved zinc-alloy useful for making improved galvanic anodes and a process for making improved galvanic anodes therefrom, D. Mukherjee, G.T. Parthiban, N. Palanisamy, N.S. Rengaswamy, Pat. No 199592. 288 CSIR NEWS Facilities Computer-controlled Vibration Test Facility at NAL’s Structures Division state-of-the-art Computer- Viswanath, Head, Structures Division, Dr A.R. Upadhya after Acontrolled Vibration Test brought out the need for such a facility declaring open the CCVTF, recalled Facility (CCVTF) has been installed to cater to civil aircraft and other how Structures Division has in the at the Structures Division of the development programmes of the past addressed problems of National Aerospace Laboratories laboratory. He also highlighted the structural dynamics. He stressed (NAL), Bangalore. The newly utility of the system in dynamic the need for qualifying the newly acquired LDS V875 CCVTF was qualification of non-aerospace systems developed LRU’s according to inaugurated by Dr A.R. Upadhya, like automobile components, electronic relevant standards and Director, NAL, at a simple function equipment, etc. He also listed out a complimented the Scientists of on 27 May 2007. number of users who seek NAL’s Structures Division in taking the In his welcome address, Dr S. expertise in this area and the facility. initiative in setting up the facility. 30 SEPTEMBER 2007 289 Foundation Day Celebrations IICT Foundation Day HE Indian Institute Tof Chemical Technology (IICT), Hyderabad, celebrated its 63rd Foundation Day on 5 August 2007. It was on this day in 1944 that the Nizam of Hyderabad signed a Firman, establishing Central Laboratories for Scientific & Industrial Research (CLSIR) in the Osmania University campus to undertake research on natural resources of the erstwhile state of Hyderabad, such as oil, coal and ceramics. This laboratory became Regional Research Laboratory, Hyderabad in 1956 and later it was Dr J.S. Yadav, Director,IICT, presenting the silver plaque to Prof. Miller, re-christened as Indian Institute of the speaker of the IICT Foundation Day Lecture-07 Chemical Technology in 1989. Prof. Andrew David Miller, lung cancer, etc. The treatment is Solutions was making efforts to forge Professor of Organic Chemistry and basically about effective delivery of partnerships between laboratories Chemical Biology and Director, a nucleic acid to the cell. Since in developing and developed