文献类型：期刊文献

英文题名：Hierarchical Nanowires Synthesized by Supramolecular Stepwise Polymerization

作者：Zhuang, Zeliang[1];Jiang, Tao[1];Lin, Jiaping[1];Gao, Liang[1];Yang, Chaoying[1];Wang, Liquan[1];Cai, Chunhua[1]

机构：[1]East China Univ Sci & Technol, Shanghai Key Lab Adv Polymer Mat, State Key Lab Bioreactor Engn, Key Lab Ultrafine Mat,Minist Educ,Sch Mat Sci & E, Shanghai 200237, Peoples R China

年份：2016

卷号：55

期号：40

起止页码：12522

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20163802817247);WOS:【SCI-EXPANDED(收录号:WOS:000384713700070)】；

基金：This work was supported by National Natural Science Foundation of China (21234002, 21304035, 21474029), Key Grant Project of Ministry of Education (313020) and National Basic Research Program of China (No. 2012CB933600). Support from project of Shanghai municipality (13JC1402000) is also appreciated.

语种：英文

外文关键词：hierarchical structures; micelles; polymerization; polypeptides; stepwise assembly

摘要：The self-organization of pre-assembled aggregates is an efficient stepwise strategy for fabricating nanostructures with a second level of hierarchy. Herein, we report that anisotropic spindle-like micelles, self-assembled from polypeptide graft copolymers with rigid backbones, can serve as ideal pre-assembled subunits for constructing one-dimensional materials with hierarchical structures. By adding organic solvents and dialyzing against water, reactive points can be generated at the ends of the spindle-like micelles, which subsequently drive the anisotropic micelles to grow as rods in a chain and eventually self-assemble into hierarchical nanowires in a stepwise manner. The second self-assembly step is a hierarchical process that resembles step polymerization. Hierarchical structures can be precisely synthesized by this new type of polymerization. These nanostructures can be tailored by the activity of the reactive points, which depends on the nature of the solvent and the molecular architecture.