报告人：Prof. Dr. Frank Würthner
Center for Nanosystems Chemistry, Universität Würzburg, 97074 Würzburg, Germany
题目：Functional Nanosystems based on Dye Aggregates
时间：2015年9月2日（星期三）2:00pm
地点：Conference Room B, BLDG 909-1F
摘要:
Research on dye molecules has been continuing to be at the forefront of new developments in chemistry owing to their versatile functional properties associated with p-conjugation. On a supramolecular level, appropriately controlled spatial arrangement of dyes enables pivotal functions in nature, the most intriguing examples being provided by the light-harvesting systems of purple and green bacteria which contain a large number of chlorophyll and carotene chromophores organized in cyclic arrays or tubular architectures by non-covalent interactions.
During the last few years, we have intensively investigated the organization of perylene bisimide dyes by non-covalent forces into desirable nanoscale architectures as well as liquid-crystalline and crystalline solid state materials. In this lecture, I will provide an overview on our achievements in the preparation of defined perylene dye assemblies and their functional properties that originate from proper p-p-stacking.[1] In particular, charge and exciton transport in H- and J-aggregates [2] and pH-sensitive energy transfer processes in dye vesicles [3] will be discussed. Furthermore I will illustrate our recent achievements towards more defined perylene dye aggregates based on foldamer and zipper self-assembly approaches [4] and unique supramolecular block co-polymerization in water [5].
References:
1. Z. Chen, A. Lohr, C. R. Saha-Möller, F. Würthner, Chem. Soc. Rev. 2009, 38, 564–584.
2. F. Würthner, T. E. Kaiser, C. R. Saha-Möller, Angew. Chem. Int. Ed. 2011, 50, 3376–3410
3. X. Zhang, S. Rehm, M. M. Safont-Sempere, F. Würthner, Nature Chem. 2009, 1, 623–629.
4. V. Dehm, M. Büchner, J. Seibt, V. Engel, F. Würthner, Chem. Sci. 2011, 2, 2094–2100.
5. D. Görl, X. Zhang, V. Stepanenko, F. Würthner, Nature Commun.2015, 6, 7009
简介:
Frank Würthner, born in 1964, received his education in Chemistry at the University of Stuttgart (Germany) where he obtained his doctoral degree in 1993 under the supervision of Prof. Franz Effenberger. He was a Feodor Lynen Fellow (Alexander von Humboldt foundation) and carried out postdoctoral research at MIT in Cambridge/MA (USA) with Prof. Julius Rebek, Jr. After two years in the BASF central research laboratories in Ludwigshafen (Germany), he did a Habilitation in Organic Chemistry at the University of Ulm. Since 2002, he is professor at the University of Würzburg, where he has served as head of the Institute of Organic Chemistry, dean of the Chemistry and Pharmacy Department and founding director of the Center for Nanosystems Chemistry. His main research interests include the synthesis and characterization of -conjugated molecules and functional dyes, their application in organic electronics, photonics and photovoltaics, the construction of complex supramolecular architectures composed of -scaffolds, the mechanistic elucidation of self-assembly processes, and the investigation of light-induced processes in dye-based nanosystems. He has published more than 300 papers and been a co-inventor on more than 20 patents. Since July 2015 he is Associate Editor of Organic Chemistry Frontiers (for profile article see http://pubs.rsc.org/en/content/articlelanding/ 2015/qo/c5qo90034d#!divAbstract).
联系人:迟力峰 教授