Issue 8, 2009

Highly selective and sensitive Hg2+ fluorescent sensors based on a phosphane sulfide derivative

Abstract

A series of fluorescent sensor molecules based on a phosphane sulfide derivative were designed and synthesized. The effect of the distance between the complex entities as well as the number and the length of fluorophores was investigated using both steady-state and time-resolved fluorescence methods. The complexation behavior of these sensor molecules, which have a distinct affinity for Hg2+, is reported. The coordination of Hg2+ induces a photoinduced electron transfer from fluorophore to the complexed mercury and results in a significant decrease of the fluorescence. Theses sensors exhibit very low detection limits in CH3CN/H2O (80/20 v:v) and excellent sensitivity to Hg2+ over other potentially interfering cations such as Na+, K+, Mg2+, Ca2+, Cu2+, Ag+, Zn2+, Cd2+ and Pb2+.

Graphical abstract: Highly selective and sensitive Hg2+ fluorescent sensors based on a phosphane sulfide derivative

Article information

Article type
Paper
Submitted
03 Dec 2008
Accepted
30 Jan 2009
First published
10 Mar 2009

Org. Biomol. Chem., 2009,7, 1665-1673

Highly selective and sensitive Hg2+ fluorescent sensors based on a phosphane sulfide derivative

M. Ha-Thi, M. Penhoat, V. Michelet and I. Leray, Org. Biomol. Chem., 2009, 7, 1665 DOI: 10.1039/B821682G

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