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高等研究院2017-2018学年名师讲堂(第二十四期)

作者:admin | 发布时间:2017-11-30 | 浏览次数:2828
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高等研究院Institute forAdvanced Study

高等研究院2016-2017学年名师讲堂(第二十四期)

 Ionic Liquid/Block Polymer Nanostructures:
Remarkably Versatile, Functional Materials

Prof. Dr. Timothy P. Lodge

Department of Chemistry and Department of Chemical Engineering & Materials Science, University of Minnesota, Minneapolis, MN 55455, USA

 

About the Speaker

Tim Lodge graduated from Harvard in 1975 with a B.A. cum laude in Applied Mathematics. He completed his PhD in Chemistry at the University of Wisconsin in 1980, and then spent 20 months as a National Research Council Postdoctoral Fellow at NIST. Since 1982 he has been on the Chemistry faculty at Minnesota, and in 1995 he also became a Professor of Chemical Engineering &Materials Science and was named a Regents Professor.
He received the American Physical Society (APS) Polymer Physics Prize in 2004 and the International Scientist Award from the Society of Polymer Science, Japan, in 2009. He was the recipient of the 2010 Prize in Polymer Chemistry from the American Chemical Society (ACS). He was honored with the Hermann Mark Award of the ACS Division of Polymer Chemistry in 2015, and in 2016 he was elected to the American Academy of Arts and Sciences.
Since 2001 he has been the Editor of the ACS journal Macromolecules. He has authored or co-authored over 400 papers in the field of polymer science, and advised or co-advised over 70 PhD students. His research interests center on the structure and dynamics of polymer liquids, including solutions, melts, blends, and block copolymers, with particular emphases on self-assembling systems using rheological, scattering and microscopy techniques.


Talk Introduction

Ionic liquids are an emerging class of solvents with an appealing set of physical attributes. These include negligible vapor pressure, impressive chemical and thermal stability, tunable solvation properties, high ionic conductivity, and wide electrochemical windows.In particular, the non-volatilityrenders ionic liquids practical components of devices, but they require structure-directing agents to become functional materials. Block polymers provide a convenient platform for achievingdesirable nanostructures by self-assembly, with lengthscales varying from a few nanometers up to several hundred nanometers. Furthermore, ionic liquids and polymer blocks can be selected to impart exquisitely tunable thermosensitivity, by exploiting either upper or lower critical solution transitions (UCSTs and LCSTs). In selected cases, it is also possible to prepare photoreversible and photopatternable systems. Overall, by combining designed block polymers and ionic liquids we have demonstrated materials with superior performance for a remarkably diverseset of applications. These includegate dielectrics in organic transistors, electrochromic and electroluminescent gels, and membranes for gas separation, ion batteries, and fuel cells.


时间:2017年12月7日 15:30-17:00

地点:南图书馆报告厅

All are welcome!