Solvent-dependent selective fluorescence sensing of Al3+ and Zn2+ using a single Schiff base

被引：49
|
作者：
Kim, Dong Ha [1 ]
Im, Ye Seo [1 ]
Kim, Hyun [2 ,3 ]
Kim, Cheal [1 ,2 ,3 ]
机构：
[1] Seoul Natl Univ Sci & Technol, Nowon Inst Educ Gifted Seoultech, Seoul 139743, South Korea
[2] Seoul Natl Univ Sci & Technol, Dept Fine Chem, Seoul 139743, South Korea
[3] Seoul Natl Univ Sci & Technol, Dept Interdisciplinary Bio IT Mat, Seoul 139743, South Korea
来源：
INORGANIC CHEMISTRY COMMUNICATIONS | 2014年 / 45卷
基金：
新加坡国家研究基金会;
关键词：
Al3+; Zn2+; Schiff base; Fluorescent chemosensor; C=N isomerization; NAKED EYE DETECTION; ALUMINUM IONS; TURN-ON; SENSOR; CHEMOSENSOR; CADMIUM; MOIETY; ZINC;
D O I：
10.1016/j.inoche.2014.03.036
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The selective assay of Al3+ and Zn3+ ions is reported using fluorescence enhancement of a simple Schiff base receptor 1 (1 = 1-((E)-(1,3-dihydroxy-2-(hydroxymethyl)propan-2-ylimino)methyl)naphthalen-2-ol) in aqueous solvents. The Schiff base receptor 1 showed a turn-on fluorescence in the presence of Al3+ in a mixture of methanol-water, as a result of a restricted C=N isomerization mechanism. The ion selectivity of 1 could be switched for Zn2+ by swapping the solvent from methanol-water to DMF-water mixture. In particular, this chemosensor could clearly distinguish Zn2+ from Cd2+. The binding properties of 1 with the metal ions were investigated by UV-vis, fluorescence, electrospray ionization mass spectroscopy and H-1 NMR titration. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：15 / 19
页数：5
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