题 目：Supramolecular Gels: From Superhydrophobic and Slippery Surfaces to Directional Transport 报告人：Christoph A. Schalley, Freie Universität Berlin 地 点：化学楼 H201（蒋雯若报告厅） 时 间：2016年9月21号（星期三）上午10：00 联系人：强琚莉 (jjl@nju.edu.cn)，王乐勇 (lywang@nju.edu.cn) E-mail: c.schalley@fu-berlin.de； Website：http://www.schalley-lab.de Biography： since 2005 Professor at Free University of Berlin 2003 � 05 Senior lecturer at the University of Bonn 1999 � 03 Habilitation at the Kekulé-Institute for Organic Chemistry and Biochemistry, University of Bonn 1998 � 99 Postdoctoral fellow with Prof. Julius Rebek, Jr., The Scripps Research Institute, La Jolla, USA 1994 � 97 Ph.D. thesis with Prof. Dr. Helmut Schwarz, Institute for Organic Chemistry oft the Technical University Berlin 1988 � 94 Studies of chemistry at the University of Freiburg and the Technical University Berlin Honors and Awards 2008 good teaching award of FU chemistry students 2006 Mattauch Herzog award of the German Society for Mass Spectrometry 2004 Lecturer fellowship of the Funds of the Chemical Industry 2003 Heisenberg fellow of the Deutsche Forschungsgemeinschaft (DFG) 1999 Liebig fellow of the Funds of the Chemical Industry 1998 Postdoc fellowship of the German Academy of Natural Scientists Leopoldina 1997 Schering award 1990 Fellow of the Studienstiftung des Deutschen Volkes Research Interests • supramolekular chemistry, mechanically interlocked molecules, molecular machines • surface chemistry, integration of molecular switches and machines into ordered arrays • supramolecular gels and polymers and their use in stimuli-responsive materials • mass spectrometry, gas-phase chemistry of non-covalent, weakly bound complexes Selected Publications (out of a total of 215 publications) 1. Coupled Molecular Switching Processes in Ordered Mono- and Multilayers of Stimuli-Responsive Rotaxanes on Gold Surfaces T. Heinrich, C.H.-H. Traulsen, M. Holzweber, S. Richter, V. Kunz, S.K. Kastner, S.O. Krabbenborg, J. Huskens, W.E.S. Unger, C.A. Schalley, J. Am. Chem. Soc. 2015, 137, 4382-4390 2. Supramolecular Polymers as Surface Coatings: Rapid Fabrication of Healable Superhydrophobic and Slippery Surfaces Q. Wei, C. Schlaich, S. Prévost, A. Schulz, C. Böttcher, M. Gradzielski, Z. Qi, R. Haag, C. A. Schalley, Adv. Mater. 2014, 26, 7358-7364 3. Stimuli-Induced Folding Cascade of a Linear Oligomeric Guest Chain Programmed through Cucurbit[n]uril Self-Sorting (n = 6, 7, 8) L. Cera, C. A. Schalley, Chem. Sci. 2014, 5, 2560-2567 4. Generation of a Dynamic System of Three-Dimensional Tetrahedral Polycatenanes S. P. Black, A. R. Stefankiewicz, M. M. J. Smulders, D. Sattler, C. A. Schalley, J. R. Nitschke, J. K. M. Sanders, Angew. Chem. Int. Ed. 2013, 52, 5749-5752 5. Deposition of Ordered Layers of Tetralactam Macrocycles and Ether Rotaxanes on Pyridine-Terminated SAMs on Gold S. Richter, J. Poppenberg, C. H.-H. Traulsen, E. Darlatt, A. Sokolowski, D. Sattler, W. E. S. Unger, C. A. Schalley, J. Am. Chem. Soc. 2012, 134, 16289-16297 6. Systems Chemistry: Logic gates based on the stimuli-responsive gel-sol transition of a crown-ether functionalized bis-urea-gelator Z. Qi, P. Malo de Molina, W. Jiang, Q. Wang, K. Nowosinski, A. Schulz, M. Gradzielski, C. A. Schalley, Chem. Sci. 2012, 3, 2073-2082 7. Chelate Cooperativity and Spacer Length Effects on the Assembly Thermodynamics and Kinetics of Divalent Pseudorotaxanes W. Jiang, K. Nowosinski, N. L. Löw, E. V. Dzyuba, F. Klautzsch, A. Schäfer, J. Huuskonen, K. Rissanen, C. A. Schalley, J. Am. Chem. Soc. 2012, 134, 1860-1868 8. Experimental evidence for the functional relevance of anion- interactions R.E. Dawson, A. Hennig, D. P. Weimann, D. Emery, V. Ravikumar, J. Montenegro, T. Takeuchi, S. Gabutti, M. Mayor, J. Mareda, C.A. Schalley, S. Matile, Nature Chem. 2010, 2, 533-538 9. Monitoring Self-Sorting by Electrospray Ionization Mass Spectrometry: Formation Intermediates and Error-Correction during the Self-Assembly of Multiply Threaded Pseudorotaxanes W. Jiang, P. C. Mohr, A. Schäfer, C. A. Schalley, J. Am. Chem. Soc. 2010, 132, 2309-2320 10. Highly dynamic motion of crown ethers along oligolysine peptide chains D. P. Weimann, H. D. F. Winkler, J. A. Falenski, B. Koksch, C. A. Schalley, Nature Chem. 2009, 1, 573-577 Lecture abstract： The talk demonstrates how (stimuli-responsive) supramolecular gels and polymers can be utilized to design functional materials. In the first part, a very simple production procedure for superhydrophobic and slippery surfaces is demonstrated. The deposition of a gel leads to the surface roughness needed for superhydrophobicity and in a way mimics the Lotus leaf effect. While the superhydrophobic surfaces repel water, but not solutions of detergents such as SDS, infusion of a lubricant into the cavities of a gel provides a slippery surface, which also repels SDS solutions and more complex liquids such as serum or blood. Both surfaces are stable to extended exposure to running water. In addition, the slippery surfaces are self-healing. The second part discusses how to use a supramolecular polymer self-assembling from easy-to-synthesize monomers as a supramolecular machine for the directional transport of particles as their cargo over millimeter distances. The direction is defined by a salt gradient and the energy dissipated in the process comes from the crystallization of flexible, bent and partially amorphous ribbons into rigid rods. Overall, this supramolecular machine generates external work from chemical energy. The structural details have been unraveled by electron microscopy, small and wide angle X-ray scattering and electron diffraction experiments. 有机化学学科 |