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Highly selective and sensitive twin-cyano-stilbene-based two-photon fluorescent probe for mercury (ii) in aqueous solution with large two-photon absorption cross-section

Paper ID Volume ID Publish Year Pages File Format Full-Text
29072 44118 2008 6 PDF Available
Title
Highly selective and sensitive twin-cyano-stilbene-based two-photon fluorescent probe for mercury (ii) in aqueous solution with large two-photon absorption cross-section
Abstract

The fluorophore derived from stilbene with two cyano groups in a single aromatic ring shows reasonably large two-photon absorption cross-section and emits strong two-photon fluorescence. A water-soluble two-photon sensor composed of the fluorophore containing bis[2-(2-hydroxyethylsulfanyl)ethyl]amino group (ionophore) has a very high sensitivity and selectivity for Hg2+ in water. It can be used to detect trace Hg2+ in near neutral aqueous solution (pH > 6.5), and its binding constant (log K) for Hg2+ is as high as 5.72 ± 0.03. Nitrogen atom property and the sulfur atom number on the ionophore are believed to be responsible for the unique selectivity of probe 1 for Hg2+.

Keywords
Fluorophore; Two-photon absorption cross-section; Ionophore; Sensor; Twin-cyano stilbene
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Highly selective and sensitive twin-cyano-stilbene-based two-photon fluorescent probe for mercury (ii) in aqueous solution with large two-photon absorption cross-section
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 199, Issues 2–3, 25 September 2008, Pages 144–149
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
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Price was $35.95
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