Polymer/Metal Segmental Janus Nanoparticles

作     者：Lin Tang Fu-xin Liang Qian Wang Xiao-zhong Qu Bing-yin Jiang 杨振忠 

作者机构：State Key Laboratory of Polymer Physics and Chemistry Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China University of Chinese Academy ofSciences Beijing 100049 China 

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

年 卷 期：2017年第35卷第7期

页      面：799-808页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(Nos.51233007 and 51622308) 

主　　题：Janus Polymer Composite Nanoparticle Interactive performance 

摘      要：Polymer/metal composite segmental Janus nanoparticles （NPs） are synthesized by sequential growth against poly（4-vinylpyridine） （P4VP） crosslinked cP4VP-PS Janus NPs. A Janus cluster of poly（4-vinylpyridine）-block-polystyrene （P4VP-b-PS） diblock copolymer is self-organized after absorption onto a silica patchy sphere via hydrogen bonding. Selective crosslinking of P4VP leads to the formation of robust cP4VP-PS Janus NPs. Within the cP4VP domain, functional species such as metals are preferentially grown by in situ reduction. Other thiol-capped polymers, for example, thiol-capped poly（N-isopropylacrylamide） （PNIPAM-SH）, can be conjugated onto the opposite side to form polymer/metal triple segmental Janus NPs. The hyperthermia effect ofAu NP of PNIPAM-Au@cP4VP-PS by near infrared （NIR） irradiation can trigger a fast transition from amphiphilic to hydrophobic of the Janus NPs at low surrounding temperature. De-stabilization of the emulsion is NIR triggered although the system temperature is below LCST （-32 ℃）.