文献类型：期刊文献

英文题名：First polyallene-based well-defined amphiphilic diblock copolymer via RAFT polymerization

作者：Zhou, Mingtao[1];Wang, Shengfei[1];Ding, Aishun[2];Lu, Guolin[1];Huang, Xiaoyu[1];Jiang, Xue[1];Xu, Binbin[1,3]

机构：[1]Univ Chinese Acad Sci, Chinese Acad Sci, Ctr Excellence Mol Synth, Shanghai Inst Organ Chem,Key Lab Synthet & Self A, 345 Lingling Rd, Shanghai 200032, Peoples R China;[2]Fudan Univ, Dept Chem, 2005 Songhu Rd, Shanghai 200438, Peoples R China;[3]East China Univ Sci & Technol, Shanghai Key Lab Adv Polymer Mat, Key Lab Ultrafine Mat, Minist Educ,Sch Mat Sci & Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2021

卷号：12

期号：21

起止页码：3088

外文期刊名：POLYMER CHEMISTRY

收录：;EI(收录号：20212410486491);WOS:【SCI-EXPANDED(收录号:WOS:000653211800001)】；

基金：The authors thank the financial supports from National Key Research & Development Program of China (2016YFA0202900), National Science Fund for Distinguished Young Scholars (51825304), National Natural Science Foundation of China (51773222, 51961145103 and 22001072), Strategic Priority Research Program of Chinese Academy of Sciences (XDB20000000), Shanghai Scientific and Technological Innovation Project (18JC1410600, 18JC1415500, 18YF1428800, 19YF1410300, 19590750400 and 20JC1415400) and Innovation Program of Shanghai Municipal Education Commission (2019-01-07-00-05-E00012).

语种：英文

外文关键词：Synthesis (chemical) - Acrylic monomers - Chains - Polydispersity - Homopolymerization - Free radical polymerization - Self assembly - Living polymerization

摘要：Polyallenes containing internal double bonds directly attached to the backbone have attracted considerable attention due to their reactive structure and direct access to diverse functional polymers. Herein, we report the first example of controlled synthesis of polyallene-based diblock copolymers with tunable structure and low polydispersities via reversible addition-fragmentation chain transfer (RAFT) polymerization. RAFT homopolymerization of phenoxyallene (POA) was firstly conducted as a model reaction to explore the polymerization conditions. The preservation of end groups of the chain transfer agent (CTA) throughout the polymerization confirmed the livingness of poly(phenoxyallene) (PPOA). Next, well-defined poly(N-isopropyl acrylamide)-b-poly(phenoxyallene) (PNIPAM-b-PPOA) diblock copolymers were synthesized by RAFT block copolymerization of POA mediated by PNIPAM-based macroCTA. We demonstrate the in situ formation of unique nanofibers based on PNIPAM-b-PPOA diblock copolymer via polymerization-induced self-assembly (PISA) at high solid concentration in methanol. This work opens a new avenue to synthesize well-defined polyallene-based copolymers via living/controlled radical polymerization and nanoparticles for broad applications.