Highly selective and sensitive colorimetric probe for hydrogen sulfide by a copper (II) complex of azo-dye based on chemosensing ensemble approach.
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.
College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Songjiang, Shanghai, PR China. dqzhang@dhu.edu.cn
Dengqing
D
Zhang
Wusong
W
Jin
D001391:Azo Compounds / Q000737:chemistry; D015374:Biosensing Techniques; D003124:Colorimetry; D004396:Coloring Agents / Q000737:chemistry; D003300:Copper / Q000737:chemistry*; D006862:Hydrogen Sulfide / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D009284:Naphthols / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet; D014867:Water
D001391:Azo Compounds; D004396:Coloring Agents; D009284:Naphthols; D014867:Water; C041728:1-(2-pyridylazo)-2-naphthol; D003300:Copper; D006862:Hydrogen Sulfide