个人简介

Professor Zink has been a Faculty member in the Department of Chemistry and Biochemistry since 1970. He received his B.S. degree in Chemistry at the University of Wisconsin. He came to UCLA after receiving his PhD degree from the University of Illinois under the direction of Russell S. Drago. He is a Distinguished Professor of Chemistry and a member of the California Nanosystems Institute. He has been an invited guest professor at the University of Paris VI and at the University of Amsterdam, and serves as an ACS tour speaker. He is an authority on triboluminescence, photochemistry and photophysics of metal-containing molecules, and on nanomachines, and has published almost 400 articles. His current research is focused on fundamental spectroscopic investigation of large metal-containing molecules and on design, operation and biological applications of functional nanomaterials including nanomachines such as valves and impellers.

研究领域

inorganic/Materials/Nanoscience/Physical

Our spectroscopic research focuses on understanding the properties of metal-containing molecules in excited electronic states. One important area of investigation is the determination of excited state geometries. Upon excitation, transition metal compounds generally undergo large distortions along many normal modes of vibration. Resonance Raman spectra, in conjunction with electronic emission and absorption spectra, Resonance Enhanced Multi Photon Ionization (REMPI) and the time-dependent theory of spectroscopy, are used to calculate the geometries. Multiple coupled excited states and modes create interesting spectroscopic effects and interpretive challenges; wavepacket amplitude transfer between excited states is calculated. The metal compounds are studied in both condensed media, such as single crystals and glasses, and in ultra cold molecular beams.

近期论文

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Thomas, C.R.; Ferris, D.P.; Lee, J.-H.; Choi, E.; Cho, M.C.; Kim, E.S.; Stoddart, J.F.; Shin, J.-S.; Cheon, J.; Zink, J.I. Noninvasive Remote-Controlled Release of Drug Molecules in Vitro Using Magnetic Actuation of Mechanized Nanoparticles. Journal of the American Chemical Society 2010, ACS ASAP, on web. Meng, H.; Liong, M.; Xia, T.; Li, Z.; Ji, J.; Zink, J.I.; Nel, A.E. Engineered Design of Mesoporous Silica Nanoparticles to Deliver Doxorubicin and P-Glycoprotein siRNA to Overcome Drug Resistance in a Cancer Cell Line. ACS Nano 2010, ACS ASAP, on web. Ambrogio, M.W.; Pecorelli, T.A.; Patel, K.; Khashab, N.M.; Trabolsi, A.; Khatib, H.A.; Botros, Y.Y.; Zink, J.I.; Stoddart, J.F. Snap-Top Nanocarriers, Organic Letters 2010, ACS ASAP, on web. Ji, Z.; Jin, X.; George, S.; Xia, T.; Meng, H.; Wang, X.; Suarez, E.; Zhang, H.; Hoek, E.M.V.; Godwin, H.; Nel, A.E.; Zink, J.I. Disperson and Stability Optimization of TiO2 Nanoparticles in Cell Culture Media. Environmental Science & Technology 2010, ACS ASAP, on web. Hom, C.; Lu, J.; Liong, M.; Luo, H.; Li, Z.; Zink, J.I.; Tamanoi, F. Mesoporous Silica Nanoparticles Faciitate Delivery of siRNA to Shutdown Signaling Pathways in Mammalian Cells. Small 2010, 6(11), 1185-1190. Klichko, Y.; Khashab, N.M.; Yang, Y.-W.; Angelos, S.; Stoddart, J.F.; Zink, J.I. Improving pore exposure in mesoporous silica films for mechanized control of the pores. Microporous and Mesoporous Materials 2010, 132(3), 435-441. Lau, Y.A.; Ferris, D.P.; Zink, J.I. Photo-driven nano-impellers and nanovalves for on-command drug release. Proceedings of SPIE 2010, 7574 (Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications VII), 75740P/1-75740P10. Pecorelli, T.A.; Dibrell, M.M.; Li, Z.; Thomas, C.R.; Zink, J.I. Multifunctional inorganic nanoparticles for imaging, targeting, and drug delivery. Proceedings of SPIE 2010, 7576 (Reporters, Markers, Dyes, Nanoparticles, and Molecular Probes for Biomedical Applications II), 75760K/1-75760K/12. Kabehie, S.; Stieg, A.Z.; Xue, M.; Liong, M.; Wang, K.L.; Zink, J.I. Surface Immobilized Heteroleptic Copper Compounds as State Variables that Show Negative Differential Resistance. Journal of Physical Chemistry Letters 2010, 1(3), 589-593. Coti, K.K.; Belowich, M.E.; Liong, M.; Ambrogio, M.W.; Lau, Y.A.; Khatib, H.A.; Zink, J.I.; Khashab, N.M.; Stoddart, J.F. Mechanised nanoparticles for drug delivery. Nanoscale 2009, 1(1), 16-39.