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

页码：15 / 19

页数：5

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