A 'turn-on' fluorescent sensor for the selective detection of cobalt and nickel ions in aqueous media

被引：105
作者：
Abebe, Fasil A. [1 ]
Eribal, Carla Sue [1 ]
Ramakrishna, Guda [1 ]
Sinn, Ekkehard [1 ]
机构：
[1] Western Michigan Univ, Dept Chem, Kalamazoo, MI 49008 USA
来源：
TETRAHEDRON LETTERS | 2011年 / 52卷 / 43期
关键词：
Chemosensor; Turn-on; Metal-detector; Cobalt; Nickel; Fluorescein; Synthesis;
D O I：
10.1016/j.tetlet.2011.08.072
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
Two newly designed turn-on fluorescein-based chemosensors are highly sensitive and selective for Co2+ and Ni2+ in both absorption and emission modes, normally difficult to achieve with these paramagnetic ions. Binding to both ions is reversible, as indicated by the bleaching of the color when the metal is extracted with EDTA. Given the difficulty of designing enhanced fluorescent sensors for paramagnetic Co2+ and Ni2+ ions, the fluorescein compounds may inspire the further development of more sophisticated sensing constructs for the detection of these ions. (C) 2011 Published by Elsevier Ltd.
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收藏
页码：5554 / 5558
页数：5
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