Poly(acrylic acid)-templated silver nanoclusters as a platform for dual fluorometric turn-on and colorimetric detection of mercury (II) ions

被引：53

作者：

Tao, Yu ^{[1
]}

Lin, Youhui ^{[1
]}

Huang, Zhenzhen ^{[1
]}

Ren, Jinsong ^{[1
]}

Qu, Xiaogang ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Rare Earth Resource Utilizat, Lab Chem Biol,Div Biol Inorgan Chem,Grad Sch, Changchun 130022, Jilin, Peoples R China

来源：

TALANTA | 2012年 / 88卷

基金：

中国国家自然科学基金;

关键词：

Ag nanoclusters; Mercury; Turn-on; Colorimetric detection; Sensors; SENSITIVE DETECTION; AU NANOCLUSTERS; HG2+ IONS; FLUORESCENT; DESIGN; SENSOR; ACID);

D O I：

10.1016/j.talanta.2011.10.043

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

An easy prepared fluorescence turn-on and colorimetric dual channel probe was developed for rapid assay of Hg2+ ions with high sensitivity and selectivity by using poly(acrylic acid)-templated silver nanoclusters (PAA-AgNCs). The PAA-AgNCs exhibited weak fluorescence, while upon the addition of Hg2+ ions, AgNCs gives a dramatic increase in fluorescence as a result of the changes of the AgNCs states. The detection limit was estimated to be 2 nM, which is much lower than the Hg2+ detection requirement for drinking water of U.S. Environmental Protection Agency, and the turn-on sensing mode offers additional advantage to efficiently reduce background noise. Also, a colorimetric assay of Hg2+ ions can be realized due to the observed absorbance changes of the AgNCs. More importantly, the method was successfully applied to the determination of Hg2+ ions in real water samples, which suggests our proposed method has a great potential of application in environmental monitoring. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：290 / 294

页数：5

共 43 条

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