Thermo-sensitive Microgels Supported Gold Nanoparticles as Temperature-mediated Catalyst

作     者：Xian-Jing Zhou Hai-Peng Lu Ling-Li Kong Dong Zhang Wei Zhang Jing-Jing Nie Jia-Yin Yuan Bin-Yang Du Xin-Ping Wang Xian-Jing Zhou;Hai-Peng Lu;Ling-Li Kong;Dong Zhang;Wei Zhang;Jing-Jing Nie;Jia-Yin Yuan;Bin-Yang Du;Xin-Ping Wang

作者机构：Department of Chemistry Zhejiang Sci-Tech University Department of Chemistry Zhejiang University Department of Materials and Environmental Chemistry Stockholm University Ministry of Education Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science & Engineering Zhejiang University 

出 版 物：《Chinese Journal of Polymer Science》 (高分子科学（英文版）)

年 卷 期：2019年第37卷第3期

页      面：235-242页

核心收录：

学科分类：07[理学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：the National Natural Science Foundation of China(No.21704092) Science Foundation of Zhejiang SciTech University(No.16062194-Y)for financial support 

主　　题：Microgel Thermo-sensitive Gold nanoparticle Catalyst 

摘      要：Microgels with a thermo-sensitive poly(N-isopropylacrylamide)(polyNIPAm) backbone and bis-imidazolium(VIM) ionic cross-links, denoted as poly(NIPAm-co-VIM), were successfully prepared. The as-synthesized ionic microgels were converted to nanoreactors, denoted as Au@PNI MGs, upon generation and immobilization of gold nanoparticles(Au NPs) of 5–8 nm in size into poly(NIPAm-co-VIM). The content of Au NPs in microgels could be regulated by controlling the 1,6-dibromohexane/vinylimidazole molar ratio in the quaternization reaction. The microgel-based nanoreactors were morphologically spherical and uniform in size, and presented reversible thermo-sensitive behavior with volume phase transition temperatures(VPTTs) at 39–40 °C. The Au@PNI MGs were used for the reduction of 4-nitrophenol, of which the catalytic activity could be modulated by temperature.