Coppens, Philip - University at Buffalo, the State University of New York

个人简介

B.S., University of Amsterdam, The Netherlands (1954) Ph.D., University of Amsterdam (1960) Doctor Honoris Causa, University of Nancy, France (1989) Corresponding Member, Royal Dutch Academy of Sciences Awards and Honors: Kolos Award of the Polish Chemical Society, September 2013 American Crystallographic Association Fellow (2011) (first selection of ACA fellows) Honored by Special Symposium, American Crystallographic Association meeting, New Orleans, May 2011 Western New York Pioneer of Science Award of the Hauptman-Woodward Medical Research Institute (2008) Ewald Prize of the International Union of Crystallography (2005) National Science Foundation, Creativity Award (2005-2007) Nishikawa Prize of the Crystallography Society of Japan (2005) Henry M. Woodburn Chair of Chemistry (1999-2012) Gregori Aminoff Prize of the Royal Swedish Academy of Sciences (1996) Schoellkopf Award of the Western New York Section of the American Chemical Society (1996) Harker Award of The Hauptman-Woodward Medical Research Institute (1995) Honorable Visitor of the National Science Council of the Republic of China (1995) Martin Buerger Award of the American Crystallographic Association (1994) AAAS Fellow (1993) Doctor Honoris Causa, University of Nancy (1989) Corresponding Member, Royal Dutch Academy of Sciences

研究领域

Structure and Physical Properties of Functionalized Polyoxotitanate Nanoparticles Time-resolved Studies of Light-induced Excited States in Molecular Crystals Light-induced Chemical Reactions in Crystals Method Development for Time-Resolved Diffraction Studies Measurement of Charge Densities by Accurate X-ray Diffraction Methods and their Analysis Synchrotron Crystallography, Including Resonance Scattering as Applied to Solid State Chemistry Photochemistry of Molecules embedded in Supramolecular Solids Research Summary: Our work combines crystallography, chemical synthesis, theoretical chemistry and spectroscopy in a comprehensive approach to chemical research. It includes the development of new methods for the study of solids by X-ray diffraction and spectroscopy. Using synchrotron radiation and excitation by laser-light at low temperature we determine the geometry of molecular species that exist for only microseconds or less. We also study chemical reactions in complex solids and examine how the molecule changes and the kinetics of change as the reaction proceeds. We use the methods of crystal engineering to synthesize new supramolecular solids. They are used to study the properties of molecules embedded as guest in the cavities of molecular frameworks. As in solutions this allows molecular dilution, but with the distinction that a periodic array is maintained. As X-rays are scattered by the electrons, X-ray diffraction can be used to map the electron distribution in solids, thus shedding light on the chemical bonding in molecules. Recently, we have focused attention on the derivation of the electrostatic potential and other electrostatic properties, such as dipole and quadrupole moments. The electrostatic properties are of importance for the understanding of chemical reactivity, the lattice energy of crystals, the folding of biological macromolecules, and the interactions between enzymes and substrates.

近期论文

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A novel manganese-doped large polyoxotitanate nanocluster, Y. Chen, E. Trzop, A. M. Makal, Y.S. Chen, P. Coppens, Dalton Trans. 2014, 3839-3841, doi:10.1039/C3DT53416B. Direct Observation of the Binding Mode of the Phosphonate Anchor to Nanosized Polyoxotitanate Clusters, Y. Chen, E. Trzop, J. D. Sokolow, P. Coppens, Chem. Eur. J. 2013, 16651-16655, doi:10.1002/chem.201302012. A large manganese-doped polyoxotitanate nanocluster: Ti13MnO14(OH)2(OEt)28, Y. Chen, J. Sokolow, E. Trzop, Y.-S. Chen, P. Coppens, J. Chin. Chem. Soc., 60 (7), 887-890, doi:10.1002/jccs.201300163. Nanosized Alkali-Metal-Doped Ethoxotitanate Clusters, Y. Chen, E. Trzop, A. Makal, J. D. Sokolow, P. Coppens, Inorg. Chem. 2013, 52 (9), 4750-4752, doi:10.1021/ic302692d. On the Biexponential Decay of the Photoluminescence of the Two Crystallographically-Independent Molecules in Crystals of [Cu(I)(phen)(PPh3)2][BF4], P. Coppens, J. Sokolow, E. Trzop, A. Makal, Y. Chen, J. Phys. Chem. Lett. 2013, 579-582, doi:10.1021/jz400013b. The interaction between theory and experiment in charge density analysis, P. Coppens, Phys. Scr. 2013, 87 (4), 048104, doi:10.1088/0031-8949/87/04/048104. Excitons and Excess Electrons in Nanometer Size Molecular Polyoxotitanate Clusters: Electronic Spectra, Exciton Dynamics, and Surface States, J. Bao, Z. Yu, L. Gundlach, J. B. Benedict, P. Coppens, H. C. Chen, J. R. Miller, P. Piotrowiak, J. Phys. Chem. B 2013, 117 (16), 4422-4430, doi:10.1021/jp307724v. Binding modes of carboxylate- and acetylacetonate-linked chromophores to homodisperse polyoxotitanate nanoclusters, J. D. Sokolow, E. Trzop, Y. Chen, J. Tang, J. B. Benedict, P. Coppens, L. J. Allen and R. H. Crabtree, J. Am. Chem. Soc. 134 (28), 11695-11700 (2012), 10.1021/ja303692r. The LaueUtil toolkit for Laue Photocrystallography. II. Spot finding and integration Jarosław A. Kalinowski, Bertrand Fournier, A. Makal and P. Coppens, J. Synchrot. Radiat. 19, 637-646 (2012). Interfacial Electron Transfer in Functionalized Polyoxotitanate Nanocrystals, R. C. Snoeberger III, K. J. Young, J. Tang, L. J. Allen, R. H. Crabtree, G. W. Brudvig, P. Coppens, V. S. Batista and J. B. Benedict, J. Am. Chem. Soc. 134, 8911-8917 (2012). Measuring picosecond excited state lifetimes at synchrotron sources, B. Fournier and P. Coppens, J. Synch. Rad., 19, 497-502 (2012). Restricted Photochemistry in the Molecular Solid State: Structural changes on Photoexcitation of Cu(I) Phenanthroline metal-to-ligand-charge-transfer (MLCT) complexes by Time-Resolved Diffraction, A. Makal, J. Benedict, E. Trzop, J. Sokolow, B. Fournier, Y. Chen, J. Kalinowski, R. Graber, R. Henning and P. Coppens, J. Phys. Chem A116, 3359-3365 (2012). Ultrafast spin-state photoswitching in a crystal and slower consecutive processes investigated by femtosecond optical spectroscopy and picosecond X-ray diffraction, E. Collet, N. Moisan, C. Baldé, R. Bertoni, E. Trzop, C. Laulhé, M. Lorenc, M. Servol, H. Cailleau, A. Tissot, M.–L. Boillot, T. Graber, R. Henning, P. Coppens and M. B.-L. Cointe, Phys. Chem. Chem. Phys. 14, 6185-6192 (2012). The LaueUtil toolkit for Laue Photocrystallography: I. Rapid orientation matrix determination for intermediate size unit-cell Laue data, J. Kalinowski, A. Makal and P. Coppens, J. Appl. Cryst. 44, 1182-1189 (2011). The development of Laue techniques for single pulse diffraction of chemical complexes: time-resolved Laue diffraction on a binuclear-rhodium organometallic complex, A. Makal, E. Trzop, J. Sokolow, J. Kalinowski, J. Benedict and P. Coppens, Acta Cryst. A67, 319-326 (2011). Real-time Crystallography of Photoinduced Processes in Supramolecular Framework Solids, P. Coppens and S.-L. Zheng, Supramolecular Photochemistry: Controlling Photochemical Processes, V. Ramamurthy and Y. Inoue Eds., John Wiley & Sons, Hoboken, NJ, USA, p. 155-175 (2011). Molecular excited state structure by time-resolved pump-probe X-ray diffraction. What is new and what are the prospects for further progress? P. Coppens, J. Phys. Chem. Lett. 2, 616-621 (2011). Time-resolved Laue diffraction of excited species at atomic resolution: 100 ps single-pulse diffraction of the excited state of the organometalic complex Rh2(µ-PNP)2(PNP)2BPh4, J. B. Benedict, A. Makal, J. D. Sokolow, E. Trzop, S. Scheins, R. Henning, T. Graber and P. Coppens, Chem. Commun. 47, 1704-1706 (2011). Large polyoxotitanate clusters: well-defined models for pure-phase TiO2 structures and surfaces, J. Benedict, R. Freindorf, E. Trzop, J. Cogswell and P. Coppens, J. Am. Chem. Soc. 132, 13669-13671 (2010). Vacuum compatible, high speed air bearing chopper, B. Knapp, D. Oss, T. Sheridan, M. Gembicky and P. Coppens, Proceedings of the Euspen International Conference (2010).