文献类型：期刊文献

英文题名：Polymeric Temperature and pH Fluorescent Sensor Synthesized by Reversible Addition-Fragmentation Chain Transfer Polymerization

作者：Liu, Guofeng;Zhou, Wei;Zhang, Jiaqi;Zhao, Ping[1]

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

年份：2012

卷号：50

期号：11

起止页码：2219

外文期刊名：JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY

收录：;EI(收录号：20121814987254);WOS:【SCI-EXPANDED(收录号:WOS:000303756100015)】；

基金：This work was financially supported by NSFC/China (50673025), National Basic Research 973 Program (2006CB806200), Scientific Committee of Shanghai, and ECUST Funds for Excellent Youth Faculties (YJ0157116).

语种：英文

外文关键词：living radical polymerization (LRP); N-isopropylmethacrylamide; pH; reversible addition-fragmentation chain transfer polymerization; sensors; stimuli-sensitive polymers; temperature

摘要：Simple-structured copolymer, poly(NIPMAM-co-CPMA), consisting of N-isopropylmethacrylamide (NIPMAM) and (Z)-4-(1-cyano-2-(4-(dimethylamino) phenyl)vinyl)phenyl-methylacrylate (CPMA) units as thermo- and pH-responsive fluorescent signaling parts, respectively, has been synthesized by reversible addition-fragmentation chain transfer polymerization. The copolymer PCN250 (m/n = 250) shows absorbance enhancement or decrease at different pH value. However, the fluorescence intensity of this copolymer shows enhancement with a rise in temperature regardless of pH value in the range of pH 4-10. In addition, fluorescence suppression of copolymer (PCN250) was observed with high proton concentration. Moreover, the lower critical solution temperature of the copolymers, poly-(NIPMAM-co-CPMA), with different component was also investigated. (C) 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 50: 2219-2226, 2012