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Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy

Highly selective and sensitive colorimetric probe for hydrogen sulfide by a copper (II) complex of azo-dye based on chemosensing ensemble approach.


PMID 22306448

Abstract

A copper (II) complex of azo-dye (Cu-1) has been synthesized by the reaction of 1-(2-pyridylazo)-2-naphthol (1) with copper (II) chloride. The complex Cu-1 is able to selectively sense hydrogen sulfide over other anions followed by the release of compound 1 to give a remarkable change of UV-vis absorption at neutral pH in aqueous solution.

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101036
1-(2-Pyridylazo)-2-naphthol, indicator grade
C15H11N3O