A New Approach to Design Ratiometric Fluorescent Probe for Mercury(II) Based on the Hg2+-Promoted Deprotection of Thioacetals

被引：140

作者：

Cheng, Xiaohong ^{[1
]}

Li, Qianqian ^{[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 | 2010年 / 2卷 / 04期

基金：

中国国家自然科学基金;

关键词：

chemosensor; mercury; deprotection of thioacetals; intramolecular charge transfer; fluorescence; high selectivity; RESONANCE ENERGY-TRANSFER; MERR FAMILY PROTEINS; TURN-ON; SELECTIVE FLUORESCENT; COLORIMETRIC DETECTION; HG2+ IONS; AQUEOUS-SOLUTION; MERCURIC ION; CONJUGATED POLYMER; SENSOR;

D O I：

10.1021/am900840q

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

On the basis of the protection reaction between ethanethiol and aldehyde, we designed and synthesized two new ratiometric fluorescent chemosensors, 3 and 4, by using intramolecular charge transfer (ICT) as a signaling mechanism. Upon the addition of Hg2+ ion, both probes displayed apparent luminescence color changes, which could be observed by naked eyes under a UV lamp. Unexpectedly, both chemosensors also gave response to the addition of trace silver ions, making this kind of chemosensors as the first example of ratiometric fluorescent probe that showed dual channel fluorescence for both Hg2+ and Ag+. The test strips experiments suggested that 3 and 4 could serve as practical fluorescent probes for rapid detection of Hg2+ ion.

引用

页码：1066 / 1072

页数：7

共 78 条

[41] A "Turn-On" fluorescent sensor for the selective detection of mercuric ion in aqueous media [J].