应羰基合成与选择氧化国家重点实验室的邀请，美国Akron大学Li Jia教授将于2013年6月19日来我所讲学。
报告题目：Cobalt-Catalyzed Carbonylative Polymerization and Materials Therefrom
报告人：Prof. Li Jia, The University of Akron, USA
报告时间：6月19日（星期三）下午16:00
报告地点：理化楼三楼多功能学术报告厅
报告人简介：
EDUCATION
· B. Sc., 1991, Lanzhou University, Lanzhou, Gansu, P. R. China.
· Ph. D., 1996, advised by Professor Tobin J. Marks, Northwestern University, Evanston, IL 60208.
· 1998-2005, Assistant Professor, Department of Chemistry, Lehigh University, Bethlehem, PA 18015.
· 2005-2007, Senior Scientist and Group Leader, Rohm and Haas Electronic Materials, Marlborough, MA 01752.
· 2007-2011, Assistant Professor.
· 2011-present, Associate Professor, Department of Polymer Science, The University of Akron, Akron, OH 44325.
· NSF CAREER Award (2002)
· DuPont Young Investigator Award (2001)
· Lindback Minority Junior Faculty Award (2000)
Metal-catalyzed polymerizations, supramolecular elastomers, photoresist polymers and materials, colloidal self-assembly and soft lithography.
报告内容简介：
Cobalt-catalyzed carbonylative polymerization (COP) of heterocycles is potentially a useful method for synthesis of a wide range of polyamides and polyesters (eq 1). The presentation will first focus on the development of this class of catalytic polymerization.[i] The evolving mechanistic understanding will be discussed based on our synthetic explorations and kinetic The evolving mechanistic understanding will be discussed based on our synthetic explorations and kinetic
studies. The scope and limitation of the polymerization will be then discussed, including the suitable monomer types for the polymerization and the control of the microstructure and architecture of the polymer products.
The properties of the poly(？-alanoid)s (X = NR) synthesized via COP of aziridines will be then presented. The superb protein-adsorption resistance of the highly water-soluble members of poly(？-alanoid)s (R = Me or Et) is demonstrated by surface plasma resonance spectroscopy (Figure 1).[ii]
Figure 1. Representative SPR sensorgrams showing very low level of adsorption when the poly(ethyl-？-alanoid)-modified surfaces are exposed to biological fluids.
Finally, oligo(？-alanine)s as a new physical crosslinking platform for thermoplastic elastomers will be presented. Only a few weight percent of oligo(？-alanine)s is necessary for physical crosslinking to occur. The oligo(？-alanine)s form filaments in the elastomeric matrix according to transmission electron microscopy.
[i] J. Am. Chem. Soc. 2004, 126, 13808-13815. Ibid, 14716-14717.
[ii] Biomacromolecules, 2011, 12, 2573-2582.
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