A simple pyridine-based colorimetric chemosensor for highly sensitive and selective mercury(II) detection with the naked eye
作者： Jian-Ting Pan , Fei Zhu , Lin Kong , Long-Mei Yang , Xu-Tang Tao
DOI: 10.1515/CHEMPAP-2015-0061
关键词: Rapid detection 、 Highly sensitive 、 Mercury (element) 、 Stoichiometry 、 Nuclear chemistry 、 Pyridine 、 Naked eye 、 Photochemistry 、 Chemistry 、 Acrylonitrile 、 Selectivity
摘要: Two easily-prepared pyridine-based derivatives of (Z)-2-(4-amino-phenyl)-3-(pyridine-4-yl)acrylonitrile (I)and (Z)-2-phenyl-3-(pyridin-4-yl)acrylonitrile (II) were designed, synthesised and characterised. Due to the formation a complex with Hg2+, hence leading an enhanced ICT effect, I exhibits visible colour change from light yellow orange, rendering it suitable for use as naked-eye sensor rapid detection Hg2+ in aqueous ethanol solution. When mixed interacts a2:1 (Y1-Hg2+) stoichiometry via coordination bond association constant 7.7 × 108 M−2 (R2 = 0.96). The present probe excellent reproducibility, reversibility, sensitivity selectivity presence low concentration (1.74 10−10 M).
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