| 5 | Hyperbranched Azopolymer with Quadruple Responsibility显示文摘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. | 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 | 2021 | Chinese Journal of Polymer Science2021，39，9： | 0 |
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