Luminescence lifetime-based sensor for cyanide and related anions

被引：438

作者：

Anzenbacher, P ^{[1
]}

Tyson, DS

Jursíková, K

Castellano, FN

机构：

[1] Bowling Green State Univ, Dept Chem, Bowling Green, OH 43403 USA

[2] Bowling Green State Univ, Ctr Photochem Sci, Bowling Green, OH 43403 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2002年 / 124卷 / 22期

关键词：

D O I：

10.1021/ja0259180

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A new Ru(II) complex is described which serves as a luminescence lifetime-based sensor for fluoride and cyanide anions (KF = 640 000 mol-1, KCN = 430 000 mol-1). This chromophore displays observable changes in its UV-vis and steady-state luminescence spectra upon cyanide binding. Prior to cyanide addition, this complex exhibits a single-exponential lifetime (τ = 377 ± 20 ns). With increasing cyanide concentrations, the intensity decays are composed of two exponentials: long τ (320-370 ns) and short τ (13-17 ns). The average lifetimes shorten as a function of cyanide concentration since the fractional intensity shifts from an initial dominant long lifetime component to the short lifetime component. This work represents the first example of a direct method for the luminescence lifetime-based sensing of anions. Copyright © 2002 American Chemical Society.

引用

页码：6232 / 6233

页数：2

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