Selective metal ion recognition using a fluorescent 1,8-diquinolylnaphthalene-derived sensor in aqueous solution

被引：151

作者：

Tumarnbac, GE ^{[1
]}

Rosencrance, CM ^{[1
]}

Wolf, C ^{[1
]}

机构：

[1] Georgetown Univ, Dept Chem, Washington, DC 20057 USA

来源：

TETRAHEDRON | 2004年 / 60卷 / 49期

基金：

美国国家科学基金会;

关键词：

stille coupling; fluorosensor; metal ion sensing;

D O I：

10.1016/j.tet.2004.07.053

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

The use of atiti-1,8-bis(2,2-diisopropyl-4,4'-diquinolyl)naphthalene, 1, for metal ion-selective fluorescence recognition has been investigated. Employing CuCl2, ZnCl2, FeCl2, and FeCl3 in fluorescence titration experiments of 1 revealed formation of a bluegreen light emitting bimetallic complex. A dramatic red-shift of the fluorescence maximum of 1 and metal ion-selective quenching was observed in the presence of Cu(II), Fe(II), and Fe(III)chlorides in acetonitrile. By contrast, addition of ZnCl2 was found to result in fluorescence enhancement, whereas Cu(l) did not induce any significant fluorescence change of 1. The sensor was found to undergo highly ion-selective fluorescence quenching in aqueous solution. Screening of main group and transition metal ions showed excellent selectivity for FeCl3 even in the presence of competing metal ions. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：11293 / 11297

页数：5

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