A novel reversible colorimetric chemosensor for rapid naked-eye detection of Cu2+ in pure aqueous solution

被引：43

作者：

Li, Guang ^{[1
]}

Tao, Farong ^{[1
]}

Wang, Hu ^{[2
]}

Li, Yuchao ^{[1
]}

Wang, Liping ^{[1
]}

机构：

[1] Liaocheng Univ, Sch Mat Sci & Engn, Liaocheng 252059, Peoples R China

[2] Anhui Univ, Ctr Anal & Testing, China Natl Metrol Accredited Lab, Hefei 230039, Peoples R China

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2015年 / 211卷

关键词：

Colorimetric; Chemosensor; Cu2+ ions; Water-soluble polymers; Rhodamine B; SIMULTANEOUS ELECTROCHEMICAL DETECTION; FLUORESCENT CHEMOSENSOR; VISUAL DETECTION; RHODAMINE; COPPER(II); SELECTIVITY; CU(II); MECHANISMS; HG2+;

D O I：

10.1016/j.snb.2015.01.105

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A novel water-soluble polymer P(NIPAM-co-RhBBA) containing pendant rhodamine B-based dyes is successfully synthesized via reversible addition-fragmentation chain transfer (RAFT) polymerization. P(NIPAM-co-RhBBA) in pure aqueous solution exhibits highly sensitive and selective detection of Cu2+ ions accompanied with a remarkable color change from colorless to purple within 20 s, which can be monitored directly by naked eyes. The on-off-on color switching behavior upon adding Cu2+ and EDTA ions alternately to P(NIPAM-co-RhBBA) aqueous solution for several successive cycles demonstrates a superior reversible colorimetric chemosensor for further applications. Furthermore, the low-cost test strips are fabricated using P(NIPAM-co-RhBBA) for convenient and efficient detection of practical Cu2+ ions in real water samples. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：325 / 331

页数：7

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