Hg2+ mediated quinazoline ensemble for highly selective recognition of Cysteine

被引：53
作者：
Anand, Thangaraj [1 ]
Sivaraman, Gandhi [1 ]
Chellappa, Duraisamy [1 ]
机构：
[1] Madurai Kamaraj Univ, Sch Chem, Madurai 625021, Tamil Nadu, India
来源：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2014年 / 123卷
关键词：
Quinazoline; Hg2+; Cysteine; Quenching; ON-OFF; Real sample analysis; TURN-ON SENSOR; FLUORESCENT CHEMOSENSOR; MERCURY; ION; HOMOCYSTEINE; CHEMODOSIMETER; TRANSITION; QUANTIFICATION; GENERATION; PROBES;
D O I：
10.1016/j.saa.2013.12.054
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
A fluorimetric sensor for Hg2+ ion and Cysteine based on quinazoline platform was designed and synthesized by one step reaction and characterized by using common spectroscopic methods. Time Dependent Density Functional Theory calculations shows that probe behaves as "ON-OFF" fluorescent quenching sensor via electron transfer/heavy atom effect. Receptor was found to exhibit selective fluorescence quenching behavior over the other competitive metal ions, and also the receptor-Hg2+ ensemble act as an efficient "OFF-ON" sensor for Cysteine. Moreover this sensor has also been successfully applied to detection of Hg2+ in natural water samples with good recovery. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：18 / 24
页数：7
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