Hyperbranched Azopolymer with Quadruple Responsibility  

作　　者：Chen Tian Ke-Cong Zhou Yu-Fei Lua Jin-Jie Li Yuan Yao Xin-Feng Tao Qi-Xin Zhuang Yu-Feng Xie Shao-Liang Ling 

机构地区：[1]Shanghai Key Laboratory of Advanced Polymeric Materials,Key Laboratory for Ultrafine Materials of Ministry of Education,School of Materials Science and Engineering,East China University of Science and Technology,Shanghai 200237,China [2]Department of Periodontology,Shanghai Ninth People's Hospital,College of Stomatology,Shanghai Key Laboratory of Stomatology&Shanghai Research Institute of Stomatology,Shanghai Jiao Tong University,Shanghai 200011,China

出　　处：《Chinese Journal of Polymer Science》2021年第9期1169-1176,共8页高分子科学（英文版）

基　　金：This work was financially supported by the National Natural Science Foundation of China(Nos.52073092,52073094 and 51873061);the Projects of Shanghai Municipality(Nos.18JC1410802 and 17JC400700).

摘　　要：Simply constructing multiple responsive polymers with obvious shape and dimension variations on their assemblies upon different stimuli is still rarely reported.In this study,we report a hyperbranched polymer named HPAzoBAHB-star-PEG_(9) with quadruple-response to light,temperature,pH and oxidation stimuli.The polymer contains azobenzene chromophore,sulfide,amide and amine groups in its hydrophobic hyperbranched core,and the core is capped with hydrophilic polyethylene glycol(PEG_(9))arms.HPAzoBAHB-5tar-PEG_(9) could assemble into unusual leaf-like lamellar micelles at 25℃ under the guidance of orderly arranged H-aggregate of azobenzene moieties.These leaf-like lamellar micelles can transform into vesicles upon UV irradiation and lower temperature,or convert to smaller spherical micelles in acidic or oxidative environments,respectively,with the destroy of ordered azobenzene arrangements.This quadruple-responsive hyperbranched polymer is suitable to con struct multiple stimuli-resp on sive micro/nanostructures,or accurate delivery and release following subtle stimuli seque nces.

关 键 词：HYPERBRANCHED AZOPOLYMER Multiple responsibility SELF-ASSEMBLY 

分 类 号：TQ317[化学工程—高聚物工业]