文献类型：期刊文献

英文题名：Stimuli-Responsive Copolymer and Uniform Polymeric Nanoparticles with Photochromism and Switchable Emission

作者：Wang, Sheng[1,2];Li, Teng[3,4];Zhang, Xiaoduo[1,2];Ma, Liangwei[3,4];Li, Chenpeng[1];Yao, Xuyang[3,4];Cao, Derong[2];Ma, Xiang[3,4]

机构：[1]Lingnan Normal Univ, Dev Ctr New Mat Engn & Technol, Sch Chem & Chem Engn, Zhanjiang 524048, Peoples R China;[2]South China Univ Technol, Sch Chem & Chem Engn, State Key Lab Luminescent Mat & Devices, Guangzhou 510641, Guangdong, Peoples R China;[3]East China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[4]East China Univ Sci & Technol, Inst Fine Chem, Shanghai 200237, Peoples R China

年份：2019

卷号：3

期号：7

起止页码：568

外文期刊名：CHEMPHOTOCHEM

收录：;EI(收录号：20231413838693);WOS:【SCI-EXPANDED(收录号:WOS:000477761500009)】；

基金：This work was financially supported by NSFC (21722603, 21871083, 21878136, 21773103 and 21372194), Project supported by Shanghai Municipal Science and Technology Major Project (Grant No. 2018SHZDZX03), the Innovation Program of Shanghai Municipal Education Commission and Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：bisthienylethene; energy transfer; fluorescent polymers; photoswitching; polymer nanoparticles

摘要：An efficient approach to make a fluorescent polymer both photoswitchable and stimuli-responsive was successfully developed by rationally introducing a photochromic bisthienylethene derivative (BTE) and fluorescent 4-dicyanomethylene-2,6-distyryl-4H-pyran derivative (DPC) units in the side chains via copolymerization. Benefiting from the reversible photocyclization of BTE and the intermolecular Forster Resonance Energy Transfer (FRET) effect from DPC to the closed form of BTE, the emission signatures of the polymer both in solution in organic solvents and in thin films could be tuned by the alternating irradiation of ultraviolet and visible light. Moreover, uniform polymeric nanoparticles (NPs) with reversibly photoswitchable fluorescence properties were synthesized using a facile one-step mini-emulsion polymerization. This polymer could act as a smart material for photoresponsive polymer illuminants and offers new platform for multifunctional molecular switching and multi-responsive materials.