Reaction-Based Colorimetric Cyanide Chemosensors: Rapid Naked-Eye Detection and High Selectivity

被引：160

作者：

Cheng, Xiaohong ^{[1
]}

Zhou, Yue ^{[1
]}

Qin, Jingui ^{[1
]}

Li, Zhen ^{[1
]}

机构：

[1] Wuhan Univ, Dept Chem, Hubei Key Lab Organ & Polymer Optoelect Mat, Wuhan 430072, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2012年 / 4卷 / 04期

基金：

美国国家科学基金会;

关键词：

chemodosimeter; cyanide; reaction-based; intramolecular charge transfer; colorimetric; high selectivity; ANION RECOGNITION; AQUEOUS-SOLUTION; FLUORESCENT-PROBE; FIRE VICTIMS; METAL-IONS; SENSORS; RECEPTOR; WATER; CHEMODOSIMETER; INDICATOR;

D O I：

10.1021/am3001083

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Taking advantages of both the well-known azobenzene structure and the special nucleophilicity of cyanide toward the acceptor moiety, a new ratiometric colorimetric chemodosimeter (Azo-1) toward cyanide anion was designed and synthesized by using intramolecular charge transfer (ICT) as a signaling mechanism. Upon the addition of CN- anion, the probe displayed apparent color changes from deep red to light yellow, which could be observed by naked eyes. With the aid of the UV-vis spectrometer, the detection limit could be as low as 1.1 mu M. The probe possessed high selectivity for cyanide with respect to other common anions. In addition, Azo-1 could serve as practical colorimetric probe for "in-the-field" measurements that would not require any additional equipment by virtue of "dip-sticks" approach.

引用

页码：2133 / 2138

页数：6

共 69 条

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