Reversible CO_(2)-, Photo-and Thermo-Triple Responsive Supramolecular Chirality of Azo-containing Block Copolymer Assemblies Prepared by Polymerization-induced Chiral Self-assembly  

作　　者：Ya-Jing Sun Xiao-Xiao Cheng Teng-Fei Miao Hao-Tian Ma Wei Zhang Xiu-Lin Zhu 

机构地区：[1]Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application,State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials,College of Chemistry,Chemical Engineering and Materials Science,Soochow University,Suzhou Industrial Park,Suzhou 215123,China

出　　处：《Chinese Journal of Polymer Science》2022年第1期56-66,共11页高分子科学（英文版）

基　　金：financial support from the National Natural Science Foundation of China(Nos.92056111 and 21971180);Nature Science Key Basic Research of Jiangsu Province for Higher Education(No.19KJA360006);Postgraduate Research&Practice Innovation Program of Jiangsu Province(No.KYCX20₂655);the Priority Academic Program Development(PAPD)of Jiangsu Higher Education Institutions supported this work。

摘　　要：Polymerization-induced chiral self-assembly(PICSA)is an efficient strategy that not only allows the construction of the supramolecular chiral assemblies in a controlled manner but also can regulate the morphology in situ.Herein,a series of azobenzene-containing block copolymer(Azo-BCP)assemblies with tunable morphologies and supramolecular chirality were obtained through the PICSA strategy.The supramolecular chirality of Azo-BCP assemblies could be regulated by carbon dioxide(CO_(2))stimulus,and completely recovered by bubbling with Ar.A reversible morphology transformation and chiroptical switching process could also be achieved by the alternative 365 nm UV light irradiation and heatingcooling treatment.Moreover,the supramolecular chirality is thermo-responsive and a reversible chiral-achiral switching was successfully realized,which can be reversibly repeated for at least five times.This work provides a feasible strategy for constructing triple stimuli-responsive supramolecular chiral nano-objects in situ.

关 键 词：Supramolecular chirality Polymerization-induced self-assembly AZOBENZENE CO_(2)responsiveness 

分 类 号：TQ317[化学工程—高聚物工业] O641.3[理学—物理化学]