文献类型：期刊文献

英文题名：Hyperbranched Azopolymer with Quadruple Responsibility

作者：Tian, Chen[1];Zhou, Ke-Cong[2,3];Lu, Yu-Fei[1];Li, Jin-Jie[1];Yao, Yuan[1];Tao, Xin-Feng[1];Zhuang, Qi-Xin[1];Xie, Yu-Feng[2,3];Lin, Shao-Liang[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat, Key Lab Ultrafine Mat,Minist Educ, Shanghai 200237, Peoples R China;[2]Shanghai Jiao Tong Univ, Shanghai Peoples Hosp 9, Coll Stomatol, Dept Periodontol,Shanghai Key Lab Stomatol, Shanghai 200011, Peoples R China;[3]Shanghai Jiao Tong Univ, Shanghai Res Inst Stomatol, Shanghai 200011, Peoples R China

年份：2021

卷号：39

期号：9

起止页码：1169

外文期刊名：CHINESE JOURNAL OF POLYMER SCIENCE

收录：;EI(收录号：20212810632886);WOS:【SCI-EXPANDED(收录号:WOS:000655887600007)】；

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

语种：英文

外文关键词：Hyperbranched; Azopolymer; Multiple responsibility; Self-assembly

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-star-PEG(9) could assemble into unusual leaf-like lamellar micelles at 25 degrees C 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 construct multiple stimuli-responsive micro/nanostructures, or accurate delivery and release following subtle stimuli sequences.