Fluorescence 'on-off-on' chemosensor for the sequential recognition of Hg2+ and cysteine in water

被引：24

作者：

Choi, Ye Won ^{[1
]}

Lee, Jae Jun ^{[1
]}

You, Ga Rim ^{[1
]}

Kim, Cheal ^{[1
]}

机构：

[1] Seoul Natl Univ Sci & Technol, Dept Interdisciplinary Bio IT Mat, Dept Fine Chem, Seoul 139743, South Korea

来源：

RSC ADVANCES | 2015年 / 5卷 / 48期

关键词：

PERFORMANCE LIQUID-CHROMATOGRAPHY; EFFECTIVE CORE POTENTIALS; MOLECULAR-MASS THIOLS; SELECTIVE FLUORESCENT; COLORIMETRIC CHEMOSENSOR; HUMAN BLOOD; NAKED-EYE; MERCURY; SENSOR; CU2+;

D O I：

10.1039/c5ra06601h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A simple fluorescent chemosensor 1 for the sequential detection of Hg2+ and cysteine was developed by combination of benzene-1,2-diamine and 6-bromopyridine-2-carboxaldehyde. The sensor 1 exhibited an 'on-off' fluorescent quenching response in the presence of Hg2+, and could be applied for detection of Hg2+ with a good recovery in water samples. The sensing mechanism of 1 for Hg2+ was supported by theoretical calculations. Moreover, the resulting Hg2+-2.1 complex acted as an efficient 'off-on' sensor for cysteine, showing recovery of 1 from Hg2+-2. 1 complex. Therefore, the sensor 1 can be employed as a practical fluorescent chemosensor for recognition of Hg2+ and cysteine in aqueous solution.

引用

页码：38308 / 38315

页数：8

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