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Synthesis of Polycyclic Natural Products Jianmin Shi Iowa State University
Iowa State University Capstones, Theses and Retrospective Theses and Dissertations Dissertations 1990 Synthesis of polycyclic natural products Jianmin Shi Iowa State University Follow this and additional works at: https://lib.dr.iastate.edu/rtd Part of the Organic Chemistry Commons Recommended Citation Shi, Jianmin, "Synthesis of polycyclic natural products " (1990). Retrospective Theses and Dissertations. 9891. https://lib.dr.iastate.edu/rtd/9891 This Dissertation is brought to you for free and open access by the Iowa State University Capstones, Theses and Dissertations at Iowa State University Digital Repository. It has been accepted for inclusion in Retrospective Theses and Dissertations by an authorized administrator of Iowa State University Digital Repository. For more information, please contact [email protected]. JLÎMI MICROFILMED 1991 INFORMATION TO USERS The most advanced technology has been used to photograph and reproduce this manuscript from the microfihn master. UMI films the text directly from the original or copy submitted. Thus, some thesis and dissertation copies are in typewriter face, while others may be from any type of computer printer. The quality of this reproduction is dependent upon the quality of the copy submitted. Broken or indistinct print, colored or poor quality illustrations and photographs, print bleedthrough, substandard margins, and improper alignment can adversely affect reproduction. In the unlikely event that the author did not send UMI a complete manuscript and there are missing pages, these will be noted. Also, if unauthorized copyright material had to be removed, a note will indicate the deletion. Oversize materials (e.g., maps, drawings, charts) are reproduced by sectioning the original, beginning at the upper left-hand corner and continuing from left to right in equal sections with small overlaps. -
High-Throughput Investigation of the Geometry and Electronic Structures
Subscriber access provided by FRITZ HABER INST DER MPI Article High-Throughput Investigation of the Geometry and Electronic Structures of Gas-Phase and Crystalline Polycyclic Aromatic Hydrocarbons Bohdan Schatschneider, Stephen Monaco, Jian-Jie Liang, and Alexandre Tkatchenko J. Phys. Chem. C, Just Accepted Manuscript • DOI: 10.1021/jp5064462 • Publication Date (Web): 07 Aug 2014 Downloaded from http://pubs.acs.org on August 12, 2014 Just Accepted “Just Accepted” manuscripts have been peer-reviewed and accepted for publication. They are posted online prior to technical editing, formatting for publication and author proofing. The American Chemical Society provides “Just Accepted” as a free service to the research community to expedite the dissemination of scientific material as soon as possible after acceptance. “Just Accepted” manuscripts appear in full in PDF format accompanied by an HTML abstract. “Just Accepted” manuscripts have been fully peer reviewed, but should not be considered the official version of record. They are accessible to all readers and citable by the Digital Object Identifier (DOI®). “Just Accepted” is an optional service offered to authors. Therefore, the “Just Accepted” Web site may not include all articles that will be published in the journal. After a manuscript is technically edited and formatted, it will be removed from the “Just Accepted” Web site and published as an ASAP article. Note that technical editing may introduce minor changes to the manuscript text and/or graphics which could affect content, and all legal disclaimers and ethical guidelines that apply to the journal pertain. ACS cannot be held responsible for errors or consequences arising from the use of information contained in these “Just Accepted” manuscripts. -
Perfluoroalkyl-Iodo Norbornane Compounds and Their Use As
Europâisches Patentamt (g) ÛJ)) European Patent Office (0) Publication number: O 002 74 1 Office européen des brevets Bl © EUROPEAN PATENT SPECIFICATION @ Date of publication of patent spécification: 18.11.81 @© Int.lnt.CI.3: Cl.3: C 07 C 61/12, C07C 103/19, number: 78101696.9 @ Application CC07C 07 C 103/737,103/737 @ Date offiling: 15.12.78 C 07 D 209/76, C07B 29/04, C07C 69/74, C 07 D 307/77, B 01 F 17/00 (54) Perfluoroaikyl-iodo norbornane compounds and their use as surfactants. (§) Priority: 27.12.77 US 865060 @ Proprietor: CIBA-GEIGY AG Patentabteilung Postfach CH-4002 Basel (CH) (43) Date of publication of application: 11.07.79 Bulletin 79/14 (72) Inventor: Brace, Neal O. 1 022 East North Path (45) Publication of the grant of the European patent: Wheaton Illinois 60187 (US) 18.11.81 Bulletin 81/46 (84) Designated Contracting States: CH DE FR GB (56) References cited: NL - A - 68 08078 Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1 ) European patent convention). Courier Press, Leamington Spa, England. The compounds of this invention are perfluoroalkyliodo norbornane derivatives of the formula wherein Y is independently oxygen or the group >NR, R is independently hydrogen or alkyl of 1 to 24 carbon atoms or each group - YR is independently halogen with the proviso that if two halogen atoms are present these are identical and Rf is a straight or branched chain perfluoroalkyl of 1 to 18 carbon atoms or said perfluoroalkyl substituted by a perfluoroalkoxy group of 2 to 6 carbon atoms. -
Revised Group Additivity Values for Enthalpies of Formation (At 298 K) of Carbon– Hydrogen and Carbon–Hydrogen–Oxygen Compounds
Revised Group Additivity Values for Enthalpies of Formation (at 298 K) of Carbon– Hydrogen and Carbon–Hydrogen–Oxygen Compounds Cite as: Journal of Physical and Chemical Reference Data 25, 1411 (1996); https://doi.org/10.1063/1.555988 Submitted: 17 January 1996 . Published Online: 15 October 2009 N. Cohen ARTICLES YOU MAY BE INTERESTED IN Additivity Rules for the Estimation of Molecular Properties. Thermodynamic Properties The Journal of Chemical Physics 29, 546 (1958); https://doi.org/10.1063/1.1744539 Critical Evaluation of Thermochemical Properties of C1–C4 Species: Updated Group- Contributions to Estimate Thermochemical Properties Journal of Physical and Chemical Reference Data 44, 013101 (2015); https:// doi.org/10.1063/1.4902535 Estimation of the Thermodynamic Properties of Hydrocarbons at 298.15 K Journal of Physical and Chemical Reference Data 17, 1637 (1988); https:// doi.org/10.1063/1.555814 Journal of Physical and Chemical Reference Data 25, 1411 (1996); https://doi.org/10.1063/1.555988 25, 1411 © 1996 American Institute of Physics for the National Institute of Standards and Technology. Revised Group Additivity Values for Enthalpies of Formation (at 298 K) of Carbon-Hydrogen and Carbon-Hydrogen-Oxygen Compounds N. Cohen Thermochemical Kinetics Research, 6507 SE 31st Avenue, Portland, Oregon 97202-8627 Received January 17, 1996; revised manuscript received September 4, 1996 A program has been undertaken for the evaluation and revision of group additivity values (GAVs) necessary for predicting, by means of Benson's group additivity method, thermochemical properties of organic molecules. This review reports on the portion of that program dealing with GAVs for enthalpies of formation at 298.15 K (hereinafter abbreviated as 298 K) for carbon-hydrogen and carbon-hydrogen-oxygen compounds. -
NXP Semiconductors NXP List of Hazardous Substances in Products
NXP Semiconductors NX3-00119 NXP List of Hazardous Substances Sustainability 01-October-2012 in Products and Packaging Sustainability Page 1 of 7 Supersedes: NX3-00119 01-October-2010 Table of contents 1 Objectives ............................................................................................................................. 2 2 Scope ................................................................................................................................... 2 3 Responsibilities, Records & Risks......................................................................................... 2 3.1 Roles and Responsibilities .................................................................................................... 2 3.2 Records ................................................................................................................................ 2 3.3 Risks .................................................................................................................................... 3 4 References ........................................................................................................................... 3 5 Definitions/Abbreviations ...................................................................................................... 3 5.1 Definitions ............................................................................................................................. 3 5.2 Abbreviations ....................................................................................................................... -
Chemical Stability and Performance Influence of Choice Substituents and Core Conjugation of Organic Semiconductors
University of Massachusetts Amherst ScholarWorks@UMass Amherst Doctoral Dissertations Dissertations and Theses March 2019 CHEMICAL STABILITY AND PERFORMANCE INFLUENCE OF CHOICE SUBSTITUENTS AND CORE CONJUGATION OF ORGANIC SEMICONDUCTORS Jack Ly University of Massachusetts Amherst Follow this and additional works at: https://scholarworks.umass.edu/dissertations_2 Part of the Polymer and Organic Materials Commons, Polymer Science Commons, and the Semiconductor and Optical Materials Commons Recommended Citation Ly, Jack, "CHEMICAL STABILITY AND PERFORMANCE INFLUENCE OF CHOICE SUBSTITUENTS AND CORE CONJUGATION OF ORGANIC SEMICONDUCTORS" (2019). Doctoral Dissertations. 1516. https://doi.org/10.7275/13323135 https://scholarworks.umass.edu/dissertations_2/1516 This Open Access Dissertation is brought to you for free and open access by the Dissertations and Theses at ScholarWorks@UMass Amherst. It has been accepted for inclusion in Doctoral Dissertations by an authorized administrator of ScholarWorks@UMass Amherst. For more information, please contact [email protected]. CHEMICAL STABILITY AND PERFORMANCE INFLUENCE OF CHOICE SUBSTITUENTS AND CORE CONJUGATION OF ORGANIC SEMICONDUCTORS A Dissertation Presented By JACK THANH LY Submitted to the Graduate School of the University of Massachusetts Amherst in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY February 2019 Polymer Science and Engineering © Copyright by Jack Thanh Ly 2019 All Rights Reserved CHEMICAL STABILITY AND PERFORMANCE INFLUENCE OF CHOICE -
Dr. Jordy Bouwman
Dr. Jordy Bouwman Email: [email protected] Website: https://www.strw.leidenuniv.nl/~bouwman EDUCATION Leiden University Leiden, the Netherlands Ph.D., Natural Sciences / Astronomy October 2010 Thesis research with Prof. Dr. H.V.J. Linnartz titled: “Spectroscopy and Chemistry of Interstellar Ice Analogues”. Free University Amsterdam Amsterdam, the Netherlands M.Sc., Chemistry – Laser Sciences February 2006 Thesis title: “A new experimental setup for cavity ringdown spectroscopy on transient species”. University of Applied Sciences Rijswijk Rijswijk, the Netherlands B.Eng., cum laude, Applied Physics February 2004 Thesis title: “High-resolution infrared absorption spectroscopy on weakly bound ionic complexes”. PERSONAL GRANTS Netherlands Organisation for Scientific Research Leiden, the Netherlands Vidi Research Grant May 2017 An €800.000 personal grant for conducting three years of independent research at Leiden University, Leiden, the Netherlands. Title of grant proposal: “Hydrocarbon chemistry under exotic conditions: the case of (exo)planetary atmospheres” Netherlands Organisation for Scientific Research Nijmegen, the Netherlands Veni Research Grant July 2013 A €250.000 personal grant for conducting three years of independent research at the free electron laser FELIX at Radboud University, Nijmegen, the Netherlands. OTHER GRANTS National Aeronautics and Space Administration Berkeley (CA), USA NASA Planetary Atmospheres Program 2012 Successfully prepared and developed a $450.000 grant proposal to investigate chemical kinetics and reaction products of a number of radical-neutral reactions at Lawrence Berkeley National Laboratory. RESEARCH EXPERIENCE Universiteit Leiden Leiden, the Netherlands Non-tenure-track Assistant Professor Nov. 2016 – Present Combined experimental and computational investigations to the influence of the shape and symmetry of polyaromatic species on the appearance of the interstellar aromatic infrared bands. -
The Photochemistry of Some Substituted 2-Cyclohexenones and the Excited States Involved
PHOTOCHEMISTRY OF SUBSTITUTi':D 2... CYCLOHE:XE;NONES THE PHOTOCHEMISTRY OF S0~1E SUBSTITUTED 2~CYCLOHEXENONES AND THE EXCITED STATES INVOLVED By FLOlTI FP~ERICK SNYDER, B.Sce .A Thesis Submitted to the Faculty of Graduate Studies in Partial Fulfilment of the Requirements for the Degree Master of Science McMaster University October 1969 To MOM and DAD on Your 25th Anniversary MASTER OF SCIENCE (1969) McMASTER UNIVERSITY (Ghemi stry) Hamilton, Ontario. TITLE: The Photochemistry of some Substituted 2-Cyclohexenones and the Excited States Involved AUTHOR: Floyd Frederick Snyder, B.Sc. '(University of Alberta) SUPERVISOR: Dr. J. J. McCullough NUMBER OF PAGES: viii, 87 SCOPE AND CONTENTS: The photoadditions of 3~phenyl-2-cyclohexenone to bicyclo [2.2.1] hepta-2,5-diene, bicyclo [2.2.1] hept-2mene and cyclopentene have been studied. In all cases £.!1! fused cyclobutane products were obtained. Quenching and sensitization experiments indicated a singlet excited state to be active in photocycloaddition. Phosphorescence and fluorescence emission were observed from 3-phenyl-2-cyclohexenoneo Energy transfer to the lo~.rest triplet of 3-phenyl-2-cyclohexenone was evident from the quenching of Michler's ketone phosphorescence. Two norbornene dimers were detected in the photolysis of 3-phenyl-2-cyclo hexenone and norbornene giving evidence for a higher triplet excited state of the enone. The photoaddition of 3-methyl-2-cyclohexenone to cyclopentene l.ras studied for comparison and both .£!..! and !.r..!.U! fused adducts l-Tere obtained. In photolyses with bicyclo [2e2el] hepta-2,5 diene or cyclopentene, 2-phenyl... 2-cyclohexenone lvas unreactive. iii ACKNOWLEDGEMENTS It is a pleasure to express my gratitude to Dr. -
Structure-Function Relationships in Organic Charge-Transfer
STRUCTURE-FUNCTION RELATIONSHIPS IN ORGANIC CHARGE-TRANSFER COMPLEXES BY KATELYN PATRICIA GOETZ A Dissertation Submitted to the Graduate Faculty of WAKE FOREST UNIVERSITY GRADUATE SCHOOL OF ARTS AND SCIENCES in Partial Fulfillment of the Requirements for the Degree of DOCTOR OF PHILOSOPHY Physics May 2016 Winston-Salem, North Carolina Approved By: Oana D. Jurchescu, Ph.D., Advisor Laurie E. McNeil, Ph.D., Chair Natalie A. W. Holzwarth, Ph.D. George E. Matthews, Ph.D. Richard T. Williams, Ph.D. Acknowledgments Many people have been invaluable in the completion of my two Wake Forest University degrees. First and foremost, I would like to thank my advisor, Dr. Oana Jurchescu. She has been a great mentor in my academic career, and was always available to talk about science and life. I do not believe I would have had the opportunities I had during my graduate career if I had pursued it elsewhere. Thanks also to the entire Wake Forest Physics Department for inspiring and teaching me, and also for being living examples of what a good research career is and can be. I would especially like to thank Dr. Keith Bonin for (possibly unknowingly) providing the push I needed to major in physics by teaching an enthusiastic and interesting electronics class. Dr. Eric Carlson also deserves a thank you for organizing the society of physics students chapter in our department. I have very much enjoyed participating in science outreach through demo days at Sci Works and work with K-12 classrooms in the area. Eric Chapman has been invaluable throughout my nine years in the department for technical help and good conversations. -
Structural and Quantum Chemical Analysis of Exciton Coupling in Homo- and Heteroaggregate Stacks of Merocyanines
ARTICLE Received 6 May 2016 | Accepted 18 Aug 2016 | Published 29 Sep 2016 DOI: 10.1038/ncomms12949 OPEN Structural and quantum chemical analysis of exciton coupling in homo- and heteroaggregate stacks of merocyanines David Bialas1, Andre´ Zitzler-Kunkel1, Eva Kirchner1, David Schmidt1 & Frank Wu¨rthner1 Exciton coupling is of fundamental importance and determines functional properties of organic dyes in (opto-)electronic and photovoltaic devices. Here we show that strong exciton coupling is not limited to the situation of equal chromophores as often assumed. Quadruple dye stacks were obtained from two bis(merocyanine) dyes with same or different chromo- phores, respectively, which dimerize in less-polar solvents resulting in the respective homo- and heteroaggregates. The structures of the quadruple dye stacks were assigned by NMR techniques and unambiguously confirmed by single-crystal X-ray analysis. The hetero- aggregate stack formed from the bis(merocyanine) bearing two different chromophores exhibits remarkably different ultraviolet/vis absorption bands compared with those of the homoaggregate of the bis(merocyanine) comprising two identical chromophores. Quantum chemical analysis based on an extension of Kasha’s exciton theory appropriately describes the absorption properties of both types of stacks revealing strong exciton coupling also between different chromophores within the heteroaggregate. 1 Universita¨tWu¨rzburg, Institut fu¨r Organische Chemie and Center for Nanosystems Chemistry, Am Hubland, 97074 Wu¨rzburg, Germany. Correspondence and requests for materials should be addressed to F.W. (email: [email protected]). NATURE COMMUNICATIONS | 7:12949 | DOI: 10.1038/ncomms12949 | www.nature.com/naturecommunications 1 ARTICLE NATURE COMMUNICATIONS | DOI: 10.1038/ncomms12949 he molecular exciton theory pioneered by Kasha1 and by X-ray analysis. -
Infrared Action Spectroscopy of Doubly Charged Pahs and Their Contribution to the Aromatic Infrared Bands S
A&A 648, A61 (2021) Astronomy https://doi.org/10.1051/0004-6361/202039744 & © ESO 2021 Astrophysics Infrared action spectroscopy of doubly charged PAHs and their contribution to the aromatic infrared bands S. Banhatti1, J. Palotás2, P. Jusko3, B. Redlich2, J. Oomens2,4, S. Schlemmer1, and S. Brünken2 1 I. Physikalisches Institut, Universität zu Köln, Zülpicher Str. 77, 50937 Köln, Germany 2 Radboud University, Institute for Molecules and Materials, FELIX Laboratory, Toernooiveld 7, 6525ED Nijmegen, The Netherlands e-mail: [email protected] 3 Max Planck Institute for Extraterrestrial Physics, Gießenbachstraße 1, 85748 Garching, Germany 4 van ’t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 908, 1098XH Amsterdam, The Netherlands Received 22 October 2020 / Accepted 14 February 2021 ABSTRACT The so-called aromatic infrared bands (AIBs) are attributed to emission of polycyclic aromatic hydrocarbons (PAHs). The observed variations toward different regions in space are believed to be caused by contributions of different classes of PAH molecules, that is to say with respect to their size, structure, and charge state. Laboratory spectra of members of these classes are needed to compare them to observations and to benchmark quantum-chemically computed spectra of these species. In this paper we present the experimental infrared (IR) spectra of three different PAH dications, naphthalene2+, anthracene2+, and phenanthrene2+, in the vibrational fingerprint 1 region 500–1700 cm− . The dications were produced by electron impact ionization of the vapours with 70 eV electrons, and they remained stable against dissociation and Coulomb explosion. The vibrational spectra were obtained by IR predissociation of the PAH2+ complexed with neon in a 22-pole cryogenic ion trap setup coupled to a free-electron infrared laser at the Free-Electron Lasers for Infrared eXperiments (FELIX) Laboratory. -
A Method for Producing an Organic Field Effect Transistor and an Organic Field Effect Transistor
(19) TZZ _¥¥_T (11) EP 2 797 133 A1 (12) EUROPEAN PATENT APPLICATION (43) Date of publication: (51) Int Cl.: 29.10.2014 Bulletin 2014/44 H01L 51/05 (2006.01) H01L 51/10 (2006.01) H01L 51/52 (2006.01) (21) Application number: 13164959.2 (22) Date of filing: 23.04.2013 (84) Designated Contracting States: • Kleemann, Hans AL AT BE BG CH CY CZ DE DK EE ES FI FR GB 01187 Dresden (DE) GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO • Lüssem, Björn PL PT RO RS SE SI SK SM TR 01127 Dresden (DE) Designated Extension States: •Leo,Karl BA ME 01219 Dresden (DE) (71) Applicants: (74) Representative: Bittner, Thomas L. • Novaled GmbH Boehmert & Boehmert 01307 Dresden (DE) Anwaltspartnerschaft mbB • Technische Universität Dresden Patentanwälte Rechtsanwälte 01062 Dresden (DE) Pettenkoferstrasse 20-22 80336 München (DE) (72) Inventors: •Günther,Alrun 01159 Dresden (DE) (54) A method for producing an organic field effect transistor and an organic field effect transistor (57) The present disclosure relates to a method for producing an organic field effect transistor, the method comprising steps of providing a gate electrode (1) and a gate insulator (2) assigned to the gate electrode (1) for electrical insulation on a substrate, depositing a first or- ganic semiconducting layer (3) on the gate insulator (2), generating a first electrode (4) and an electrode insulator (5) assigned to the first electrode (4) for electrical insu- lation, depositing a second organic semiconducting layer (6) on the first organic semiconducting layer (3) and the electrode insulator