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

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy (2012-02-07)
Dengqing Zhang, Wusong Jin
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.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
1-(2-吡啶偶氮)-2-萘酚, indicator grade