A novel colorimetric and "turn-on" fluorimetric chemosensor for selective recognition of CN- ions based on asymmetric azine derivatives in aqueous media

被引:39
作者
Pei, Peng-Xiang [1 ]
Hu, Jing-Han [1 ]
Long, Chen [1 ]
Ni, Peng-Wei [1 ]
机构
[1] Lanzhou Jiaotong Univ, Coll Chem & Biol Engn, Lanzhou 730070, Gansu, Peoples R China
基金
中国国家自然科学基金;
关键词
Anion sensor; Colorimetric; Fluorescence; Cyanide; Test strip; Bitter almond; DFT; NAKED-EYE DETECTION; FLUORESCENT CHEMOSENSOR; CYANIDE DETECTION; RATIOMETRIC DETECTION; CRYSTAL-STRUCTURE; HIGH-SENSITIVITY; OFF-ON; SENSOR; PROBE; ACYLHYDRAZONE;
D O I
10.1016/j.saa.2018.03.022
中图分类号
O433 [光谱学];
学科分类号
0703 ; 070302 ;
摘要
A novel chemosensor 24(2)-(((E)-quinolin-2-ylmethylene)hydrazono)methyl)phenol PX has been successfully designed and synthesized, which showed both colorimetric and "turn-on" fluorescence responses for CN in DMSO/H20 (3:2, v/v; pH = 7.20) solution. The sensor could respond effectively to the stimulation of CINI ions via deprotonation and sensing mechanism of intramolecular charge transfer (ICT). Moreover, the sensor PX was successfully utilized to detect CN in bitter almond, and the detection limit on fluorescence response of PX towards CN was down to 4.5 x 10(-7) M. Test strips containing PX were also prepared, which could act as a practical colorimetric tool to detect CN in aqueous media. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码:182 / 187
页数:6
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