Colorimetric Chemodosimeter Based on Diazonium-Gold-Nanoparticle Complexes for Sulfite Ion Detection in Solution

被引：59

作者：

Du, Jianjun ^{[1
]}

Shao, Qi ^{[1
]}

Yin, Shengyan ^{[1
]}

Jiang, Lin ^{[1
]}

Ma, Jan ^{[1
]}

Chen, Xiaodong ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore

来源：

SMALL | 2012年 / 8卷 / 22期

基金：

新加坡国家研究基金会;

关键词：

gold; nanoparticles; redox chemistry; sensors; sulfite; WINE-INDUCED ASTHMA; LIQUID-CHROMATOGRAPHY; DNA; FLUORESCENT; CHEMILUMINESCENCE; CHEMOSENSORS; MERCURY(II); BIOSENSOR; CYSTEINE; OXIDASE;

D O I：

10.1002/smll.201201650

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A fast and simple colorimetric detection system for sulfite, based on diazonium-gold-nanoparticle(AuNP) complexation, has high selectivity and sensitivity in aqueous media. The positively charged diazonium has affinity for the AuNP surface due to an electrostatic effect, which prevents AuNPs from aggregating in highly saline solutions. Upon addition of sulfite, the AuNPs are free to aggregate due to the formation of a neutral and insoluble phenylhydrazine derivative. © 2012 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：3412 / 3416

页数：5

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