Fluorescence sensor for sequential detection of zinc and phosphate ions

被引：60

作者：

An, Miran ^{[1
]}

Kim, Bo-Yeon ^{[1
]}

Seo, Hansol ^{[1
]}

Helal, Aasif ^{[2
]}

Kim, Hong-Seok ^{[1
]}

机构：

[1] Kyungpook Natl Univ, Dept Appl Chem, Daegu 41566, South Korea

[2] King Fahd Univ Petr & Minerals, Ctr Res Excellence Nanotechnol, Dhahran 31261, Saudi Arabia

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2016年 / 169卷

基金：

新加坡国家研究基金会;

关键词：

Fluorogenic chemosensor; Thiazole sulfonamide; Sequential recognition; Zinc; Phosphate; INTRAMOLECULAR PROTON-TRANSFER; PHYSIOLOGICAL-ROLE; RECOGNITION; CHEMOSENSOR; STATE; INHIBITION; RECEPTORS; COMPLEXES; BINDING; ZN2+;

D O I：

10.1016/j.saa.2016.06.026

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

A new, highly selective turn-on fluorescent chemosensor based on 2-(2'-tosylamidophenyl)thiazole (1) for the detection of zinc and phosphate ions in ethanol was synthesized and characterized. Sensor 1 showed a high selectivity for zinc compared to other cations and sequentially detected hydrogen pyrophosphate and hydrogen phosphate. The fluorescence mechanism can be explained by two different mechanisms: (i) the inhibition of excited-state intramolecular proton transfer (ESIPT) and (ii) chelation-induced enhanced fluorescence by binding with Zn2+. The sequential detection of phosphate anions was achieved by the quenching and subsequent revival of ESIPT. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：87 / 94

页数：8

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