2018年7月6日上午Thomas A. P. Seery副教授讲座

报告题目： Total Synthesis of Nanocomposites

报告人：  Dr. Thomas A. P. Seery，美国康涅狄格大学副教授

主持人：  李伟华教授、院长

报告地点： 珠海校区海滨红楼5栋104会议室

报告时间： 2018年7月6日10:00~11:30

报告人简介：

Thomas A. P. Seery

Educational background:

Harvard University, A. B. cum laude in Chemistry, June, 1985.

University Of Southern California, Ph.D. in Chemistry, December, 1991

University Of Southern California, Postdoctoral Associate, 1992

University Of California, Berkeley Postdoctoral Associate 1993 – 1994

Appointments:

8/2000 – present Associate Professor of Chemistry and member of the Polymer Program and the Institute of Materials Science at the University of Connecticut

7/2014 – 17 Visiting Professor, Shanghai Jiao Tong University, School of Chemistry and

Chemical Engineering

6/2017, 5/2018 Visiting Professor, China Jiliang University, Hangzhou

7/2015 - 16 Visiting Professor, Shanghai Jiao Tong University, Zhiyuan College

10/2014 – 3/2015 Sabbatical at University of Freiburg, IMTEK, with Jurgen Ruehe

报告摘要：

Metal mediated polymerizations can be initiated from particle surfaces to provide nanocomposite materials with uniquely interesting compositions. Two logical systems with end-functional coupling agents that can be chosen to provide initiating ligands for this work are thiols on gold and silanes on silica. One might expect given the wealth of literature that the major difficulties in utilizing either system for this purpose had been overcome.  Unfortunately several tools appropriate for gold nanoparticles are not effective for silica nanoparticles and vice versa. Nonetheless we have prepared well defined structures using surface initiated polymerizations from gold and silica nanoparticles where the polymerizations have been mediated by either ruthenium alkylidenes or titanium alkoxide organometallic species.

Efforts in our laboratory have also shown that the rate of initiation is sensitive to the structure of a layer of tethered initiators when polymerizations are initiated from particle surfaces.  The results of this range from broadened molecular weight distributions to no polymerization at all.  It is also desirable to make the polymerization chemistry independent of the nature of the substrate.  Both of these issues can be addressed through manipulation of the surface coverage containing the tethered initiator.