时间：2021年11月15日（周一） 09:30-11:00

Time: 09:30-11:00, Monday, November 15th, 2021

主持人: 西湖大学理学院徐益明讲席教授 邓力 博士

Host: Prof. Li Deng, XU Yiming Endowed Chair Professor, Executive Dean of School of Science

地点：西湖大学云栖校区4号楼311会议室

Venue: Room 311, Building 4, Yunqi Campus

线上：Zoom会议 ID：327 006 1038, 密码：202111

Online：Zoom Meeting ID: 327 006 1038, Password: 202111

主讲嘉宾/Speaker：

Prof. Wei You

Department of Chemistry, University of North Carolina at Chapel Hill

主讲人简介/Biography:

Wei You was born in a small village outside of Chuzhou in Anhui Province of China and grew up in Hefei, the provincial capital of Anhui. After receiving a B.S. degree in Polymer Chemistry from University of Science and Technology of China in 1999, he attended the graduate program of chemistry at the University of Chicago, where he obtained his Ph.D. in 2004 under the guidance of Professor Luping Yu. He then moved west and finished his postdoctoral training at Stanford University in 2006 with Professor Zhenan Bao. In July 2006, he joined the University of North Carolina at Chapel Hill as an Assistant Professor in Chemistry. He was promoted to the rank of Associate Professor in 2012 and then Full Professor in 2017. He is currently the Chair of Chemistry Department (2020-current).

He has published over 160 papers in premier journals such as Nature Photonics, JACS, Angew. Chem., Int. Ed., Macromolecules, Advanced Materials, among others, and has been an Associate Editor for Polymer Chemistry (RSC) since July 2013. He is also on the advisory board for Macromolecules (ACS) and ACS Applied Energy Materials (ACS). He has received DuPont Young Professor Award (2008), NSF CAREER Award (2010), Camille Dreyfus Teacher-Scholar Award (2011), Tanner Award for Excellence in Undergraduate Teaching (2011), CAPA Distinguished Junior Faculty Award (2012), Ruth and Phillip Hettleman Prize for Artistic and Scholarly Achievement (2013), Fellow of Royal Society of Chemistry (FRSC) (2017), and “World Highly Cited Researchers” by Web of Science Group (2019, 2020, 2021). His group is currently investigating novel polymers for solar cells, new polymerization methodologies and their applications, and organic/inorganic hybrid 2D perovskites.

讲座摘要/Abstract:

It is not exaggerating to state that in the broad field of polymer chemistry and polymeric materials, Reversible-Addition Fragmentation Chain Transfer (RAFT) polymerization has become one of the most widely exploited platforms for controlled chain-growth polymerization using free-radical monomers, since its original discovery 25 years ago at CSIRO (Macromolecules, 1998, 31, 5559-5562; this paper alone has been cited nearly 4,000 times). This method is much appreciated by community as it is generally easy for users to practically implement and design polymers with reliable predicted chain length. Over the years, the versatility of RAFT process in controlled chain-growth polymerizations has been well demonstrated to design polymers with various functionality appended along the side chain. 

This talk is NOT about RAFT free radical polymerization; what you will find here are our recent efforts to take advantage of unique mechanistic features of RAFT to achieve new polymerization methodologies. Specifically, I will discuss (a) controlled cationic polymerization via RAFT,1 (b) orthogonal cationic and radical RAFT polymerizations to prepare bottlebrush polymers,2 and (c) RAFT step-growth polymerization.3 With these newly discovered polymerization methodologies, the community now has more tools at its disposal to create a variety of polymers with unique structures and architectures for different applications.  

Key Steps in RAFT Step-Growth Polymerization

1. “Visible Light Photoinitiated Metal-Free Living Cationic Polymerization of 4‑Methoxystyrene.” Andrew J. Perkowski, Wei You,* and David A. Nicewicz.*J. Am. Chem. Soc. 2015, 137, 7580−7583

2. “Orthogonal Cationic and Radical RAFT Polymerizations to Prepare Bottlebrush Polymers.” Joji Tanaka, Satu Häkkinen, Parker T. Boeck, Yidan Cong, Sébastien Perrier, Sergei S. Sheiko, Wei You.*Angew. Chem. Int. Ed. 2020, 59, 7203 –7208.

3. “Reversible-Addition Fragmentation Chain Transfer Step-Growth Polymerization.” Joji Tanaka*, Noel Edward Archer, Michael Jeffery Grant, Wei You*. J. Am. Chem. Soc. 2021, 143, 15918–15923

讲座联系人/Contact:

理学院 陈老师 chenlingli@westlake.edu.cn