Thermo and pH sensitive fluorescent polymer sensor for metal cations in aqueous solution
Thermo and pH sensitive fluorescent polymer sensor for metal cations in aqueous solution
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DOI：
10.1002/pat.986
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发表时间：
2008-02-01
影响因子：
3.4
通讯作者：
He, Yongbing
中科院分区：
文献类型：
--
作者：
Liu, Yunhai;Meng, Lingzhi;He, Yongbing
合成了一种新的单体荧光基团n-丙烯- n′-（喹啉-8-基）硫脲（AQT）。以n -异丙基丙烯酰胺为基料，采用自由基共聚法制备了一种水溶性荧光共聚物。研究了共聚物水溶液在不同pH值和金属阳离子存在下的荧光特性。聚合物所含的AQT是一种选择性的Ni、Pb、Co离子的化学传感器，特别是对Co离子。所得共聚物在不同比例的AQT、N、N-二甲基丙烯酰胺和N-异丙酰胺下具有32.5 ~ 37.5℃的热敏低临界溶液温度（LCST）。版权所有(C) 2007约翰威利父子有限公司
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.