文献类型：期刊文献

英文题名：Toroid Formation through a Supramolecular "Cyclization Reaction" of Rodlike Micelles

作者：Yang, Chaoying[1];Gao, Liang[1];Lin, Jiaping[1];Wang, Liquan[1];Cai, Chunhua[1];Wei, Yuhan[2];Li, Zhibo[2]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat, Shanghai 200237, Peoples R China;[2]Qingdao Univ Sci & Technol, Sch Polymer Sci & Engn, Qingdao 266042, Peoples R China

年份：2017

卷号：56

期号：20

起止页码：5546

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20171603583214);WOS:【SCI-EXPANDED(收录号:WOS:000400458700024)】；

基金：This work was supported by the National Natural Science Foundation of China (21234002, 21474029, and 51573049).

语种：英文

外文关键词：cyclizations; polymers; polypeptide; theoretical simulation; toroidal structures

摘要：Constructing polymeric toroids with a uniform, tunable size is challenging. Reported herein is the formation of uniform toroids from poly(gamma-benzyl-l-glutamate)-graft-poly(ethylene glycol) (PBLG-gamma-PEG) graft copolymers by a twostep self-assembly process. In the first step, uniform rodlike micelles are prepared by dialyzing the polymer dissolved in tetrahydrofuran (THF)/N, N'-dimethylformamide (DMF) against water. With the addition of THF in the second step, the rodlike micelles curve and then close end-to-end to form uniform toroids, which resemble a cyclization reaction.