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Thermo and pH sensitive fluorescent polymer sensor for metal cations in aqueous solution
Author(s) -
Liu Yunhai,
Meng Lingzhi,
Lu Xiaoju,
Zhang Lifen,
He Yongbing
Publication year - 2008
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.986
Subject(s) - lower critical solution temperature , copolymer , aqueous solution , fluorescence , thiourea , fluorophore , monomer , metal ions in aqueous solution , materials science , polymer , polymer chemistry , poly(n isopropylacrylamide) , metal , nuclear chemistry , chemistry , organic chemistry , physics , quantum mechanics , composite material , metallurgy
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°C with varied ratios of AQT, N, N ‐dimethylacrylamide and N ‐isopropylamide. Copyright © 2007 John Wiley & Sons, Ltd.