Thermo and pH sensitive fluorescent polymer sensor for metal cations in aqueous solution

被引:30
|
作者
Liu, Yunhai [1 ,2 ]
Meng, Lingzhi [1 ]
Lu, Xiaoju [1 ]
Zhang, Lifen [1 ]
He, Yongbing [1 ]
机构
[1] Wuhan Univ, Dept Chem, Wuhan 430072, Peoples R China
[2] E China Inst Technol, Dept Appl Chem, Fuzhou 344000, Peoples R China
关键词
N-acryl-N '-(quinolin-8-yl)thiourea; poly(N-isopropylacrylamide); fluorescence; thermo-sensitive; Co2+ ion;
D O I
10.1002/pat.986
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
A new monomeric fluorophore N-acryl-N'-(quinolin-8-yl)thiourea (AQT) was synthesized. Free radical copolymerization was carried out in order to prepare a water-soluble fluorescent copolymer, based on N-isopropylacrylamide. The fluorescent characteristic of the aqueous solutions of copolymers was investigated both in varied pH and in the presence of metal cations. The polymer-contained AQT was found to be a selective chemosensor for Ni, Pb, Co ions especially for Co ion. The obtained copolymers show thermo-sensitive lower critical solution temperature (LCST) ranging from 32.5 to 37.5 degrees C with varied ratios of AQT, N, N-dimethylacrylamide and N-isopropylamide. Copyright (C) 2007 John Wiley & Sons, Ltd.
引用
收藏
页码:137 / 143
页数:7
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