A highly sensitive and selective fluorescent sensor for the determination of copper(II) based on a schiff base

A highly sensitive and selective fluorescent sensor for the determination of copper(II) based on... A highly sensitive and selective optical sensor for the determination of trace amounts of Cu 2+ based on fluorescence quenching has been developed. The sensing membrane was prepared by immobilization of a novel fluorescent Schiff base ligand 4-(1-phenyl-1-methylcyclobutane-3-yl)-2-(2-hydroxy-5-romobenzylidene)aminothiazole, on polyvinlyl chloride. The novel sensor, which has a linear range of 1.0 × 10 −8 – 5.7 × 10 −4 mol L −1 for Cu 2+ ions with a detection limit of 8.8 × 10 −9 mol L −1 (0.56 μg L −1 ), is fully reversible and the response time ( τ 90 ) was approximately 2.5 min. The optode was highly selective and can readily be regenerated by treatment with 10 −2 mol L −1 HCl. The accuracy of the proposed sensor was confirmed by analyzing standard reference materials of natural water and peach leaves. The sensor was successfully applied for the determination of copper in tap water and tea samples. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Dyes and Pigments Elsevier

A highly sensitive and selective fluorescent sensor for the determination of copper(II) based on a schiff base

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Publisher
Elsevier
Copyright
Copyright © 2009 Elsevier Ltd
ISSN
0143-7208
D.O.I.
10.1016/j.dyepig.2009.04.012
Publisher site
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Abstract

A highly sensitive and selective optical sensor for the determination of trace amounts of Cu 2+ based on fluorescence quenching has been developed. The sensing membrane was prepared by immobilization of a novel fluorescent Schiff base ligand 4-(1-phenyl-1-methylcyclobutane-3-yl)-2-(2-hydroxy-5-romobenzylidene)aminothiazole, on polyvinlyl chloride. The novel sensor, which has a linear range of 1.0 × 10 −8 – 5.7 × 10 −4 mol L −1 for Cu 2+ ions with a detection limit of 8.8 × 10 −9 mol L −1 (0.56 μg L −1 ), is fully reversible and the response time ( τ 90 ) was approximately 2.5 min. The optode was highly selective and can readily be regenerated by treatment with 10 −2 mol L −1 HCl. The accuracy of the proposed sensor was confirmed by analyzing standard reference materials of natural water and peach leaves. The sensor was successfully applied for the determination of copper in tap water and tea samples.

Journal

Dyes and PigmentsElsevier

Published: Nov 1, 2009

References

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