Luminescence Lifetime-based Sensor For Cyanide And Related Anions

Author(s)

Pavel Anzenbacher Jr., Bowling Green State UniversityFollow
Daniel S. Tyson
Karolina Jursı´kova
Felix N. Castellano

Document Type

Article

Abstract

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 (tau = 377 +/- 20 ns). With increasing cyanide concentrations, the intensity decays are composed of two exponentials: long tau (320-370 ns) and short tau (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 Statement

Publisher PDF

Repository Citation

Anzenbacher, Pavel Jr.; Tyson, Daniel S.; Jursı´kova, Karolina; and Castellano, Felix N., "Luminescence Lifetime-based Sensor For Cyanide And Related Anions" (2002). Chemistry Faculty Publications. 135.
https://scholarworks.bgsu.edu/chem_pub/135

Publication Date

6-2002

Publication Title

Journal Of The American Chemical Society

DOI

https://doi.org/10.1021/ja0259180

Start Page No.

6232

End Page No.

6233