A new rhodamine-thiourea/Al3+ complex sensor for the fast visual detection of arginine in aqueous media

被引:77
作者
He, Liang [1 ]
So, Vicky Lai Lai [1 ]
Xin, John H. [1 ]
机构
[1] Hong Kong Polytech Univ, Inst Text & Clothing, Hong Kong, Hong Kong, Peoples R China
来源
SENSORS AND ACTUATORS B-CHEMICAL | 2014年 / 192卷
基金
中国国家自然科学基金;
关键词
Fluorescent chemosensor; Naked eye recognition; Rhodamine thiourea; Aluminum ion; Arginine; Amino acid; SELECTIVE FLUORESCENT RECOGNITION; ALPHA-AMINO-ACIDS; CHIRAL RECOGNITION; ON NAPHTHOL; CHEMOSENSOR; AL3+; ZN2+; CYSTEINE; BINDING; PROBE;
D O I
10.1016/j.snb.2013.11.001
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
A new naked-eye fluorescent sensor composed of bis-rhodamine-thiourea/Al3+ complex has been developed targeting the detection of arginine. It displayed high sensitivity and selectivity toward arginine over other analytes in aqueous media. In the presence of arginine, the complex sensor can give dual responsive signals of a visible color change and an 'on-off' fluorescence change within 1 min due to the opening-closure transformation of the spiro ring in rhodamine. More importantly, the complex sensor has a widely linear detection range of 0-1.2 x 10(-4) mol L-1 toward arginine under the experimental conditions, which exceeded the concentration range in healthy body plasma samples. It demonstrates the potential application in plasma samples for real-time analysis. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码:496 / 502
页数:7
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