A highly selective and reversible fluorescence "OFF-ON-OFF" chemosensor for Hg2+ based on rhodamine-6G dyes derivative and its application as a molecular logic gate

被引：25
|
作者：
Bai, Cui-Bing [1 ,2 ]
Qiao, Rui [1 ,2 ]
Liao, Jia-Xin [1 ]
Xiong, Wen-Zhang [1 ]
Zhang, Jie [1 ]
Chen, Shui-Sheng [1 ,2 ]
Yang, Song [1 ,2 ]
机构：
[1] Fuyang Normal Univ, Sch Chem & Mat Engn, Fuyang 236037, Anhui, Peoples R China
[2] Anhui Prov Key Lab Degradat & Monitoring Pollut E, Fuyang 236037, Anhui, Peoples R China
来源：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2018年 / 202卷
基金：
中国国家自然科学基金;
关键词：
Rhodamine-6G; Mercury ion; Iodide ion; Fluorescent probes; Molecular logic gate; AQUEOUS-SOLUTION; LIVING CELLS; IONS; CHEMODOSIMETER; PROBE; SENSORS; RECOGNITION; MERCURY(II); DESIGN; AMINO;
D O I：
10.1016/j.saa.2018.05.050
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
A new rhodamine-6G-based chemosensor X was designed and synthesized for the colorimetric and fluorometric detection of Hg2+. The chemosensor X responsed to Hg2+ had good sensitivity, high selectivity and excellent reversibility in HEPES buffer (10 mM, pH 7.4)/CH3CN (40:60, V/V). The recognition mechanism of X toward Hg2+ was evaluated by Job's plot, IR and MS. Meanwhile, X-Hg2+ fluorescence lifetime was also measured. It was interesting that X displayed favorable reversibility to form an "off-on-off" type signaling behavior with the Hg2+-induced emission spectra being quenched by I-. Furthermore, it could be applied as a molecular logic gate and test strips based on X exhibited a good reversibility selectivity to Hg2+. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：252 / 259
页数：8
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