Selective colorimetric and fluorimetric detection of cyanide in aqueous solution using novel heterocyclic imidazo-anthraquinones

被引：43
作者：
Batista, Rosa M. F. [1 ]
Costa, Susana P. G. [1 ]
Raposo, M. Manuela M. [1 ]
机构：
[1] Univ Minho, Ctr Chem, P-4710057 Braga, Portugal
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2014年 / 191卷
关键词：
Imidazole; Heterocycles; Colorimetric and fluorimetric chemosensors; Cyanide; Naked-eye detection; Aqueous media; SENSING PROPERTIES; ANION RECOGNITION; BOND FORMATION; FLUORIDE; FLUORESCENT; THIOUREA; UREA; ION; RECEPTORS; REAGENTS;
D O I：
10.1016/j.snb.2013.10.030
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Novel receptors based on imidazo-anthraquinone system containing thiazole, (benzo)furan, thiophene and imidazole heterocycles at position 2 were synthesized. The photophysical properties of compounds 1-8 were studied by UV-vis and fluorescence spectroscopy in acetonitrile. All anthraquinone derivatives exhibited great selectivity for the cyanide anion over other anions in acetonitrile/water (9:1) solution showing a distinct colour change from yellow to orange and the fluorescence emission was switched "off". The binding stoichiometry between the receptors and the anions was found to be 1:1. Moreover, chemosensors 1-8 exhibit a high sensitivity being capable to detect cyanide in very low concentrations (below 4 mu M). (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：791 / 799
页数：9
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