文献类型：期刊文献

英文题名：Diketopyrrolopyrrole-based fluorescent conjugated polymer for application of sensing fluoride ion and bioimaging

作者：Qu, Yi[1,2,3,4];Wu, Yongquan[1,2];Gao, Yuting[3,4];Qu, Sanyin[3,4];Yang, Lin[3,4];Hua, Jianli[3,4]

机构：[1]Fudan Univ, Dept Chem, Shanghai 200433, Peoples R China;[2]Fudan Univ, Adv Mat Lab, Shanghai 200433, Peoples R China;[3]E China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[4]E China Univ Sci & Technol, Inst Fine Chem, Shanghai 200237, Peoples R China

年份：2014

卷号：197

起止页码：13

外文期刊名：SENSORS AND ACTUATORS B-CHEMICAL

收录：;EI(收录号：20141317511191);WOS:【SCI-EXPANDED(收录号:WOS:000334753200002)】；

基金：This work was supported by the National Basic Research 973 Program (2013CB733700) and NSFC/China (21372082, 2116110444 and 21172073).

语种：英文

外文关键词：Diketopyrrolopyrrole; Conjugated polymer; Fluorescence; Fluoride ion; Bioimaging

摘要：Diketopyrrolopyrrole (DPP)-based polymer (P1) was designed as the conjugated amplifying polymer for sensing fluoride ion and bioimaging. The delocalized electronic structure of this polymer was composed by copolymerization of DPP and fluorene monomers in the main chain. Some unalkylation imide moieties in DPP monomer (1) offered emission traps for the excited state (exciton) transport. Fluoride ion was induced as quencher to interrupt electronic energy transfer (EET) by strong deprotonated interaction. The obvious quenching of fluorescence and red-to-purple color change shows P1 can act as the great promise sensor for the detection of fluoride ion. Furthermore, P1 was fabricated to polymeric nanoparticles for bioimaging. This report provides a feasible way to construct the useful fluorescent sensing and bioimaging materials. (C) 2014 Elsevier B.V. All rights reserved.