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

页码：791 / 799

页数：9

共 79 条

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