Highly efficient and selective turn-off quenching of ligand-sensitized luminescence from europium imidazo[4,5-f]-1,10-phenanthroline complex by fluoride ion

被引：50

作者：

Wang, QianMing ^{[1
]}

Tamiaki, Hitoshi ^{[1
]}

机构：

[1] Ritsumeikan Univ, Dept Biosci & Biotechnol, Kusatsu, Shiga 5258577, Japan

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2009年 / 206卷 / 2-3期

关键词：

Complexation; Europium; Fluoride; Luminescence; Quenching; NAKED-EYE DETECTION; LANTHANIDE COMPLEXES; ANION RECOGNITION; DNA-BINDING; EMISSION;

D O I：

10.1016/j.jphotochem.2009.05.024

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A smart fluoride sensitive luminescence probe based on 1:2 complex of europium(III) with 2-(2-hydroxyphenyl)imidazo[4,5-f]-1,10-phenanthroline was prepared. The emission of europium ions via photosensitization of the ligand was completely quenched by addition of 2 equiv. of fluoride ions in DMSO. Spectroscopic analyses proved that the imidazolyl NH of the ligand was hydrogen-bonded with additive fluoride to form the 1:1 complex. leading to suppression of the photosensitization. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：124 / 128

页数：5

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