Zhang Qiang
2011
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Journal
Journal of Inner Mongolia Normal University
Abstract
Salicylaldehyde azine was synthesized starting from salicylaldehyde with aqueous hydrazine,and its structure was characterized by 1H-NMR and elementary analysis.The influence of H+,Ca2+,Mg2+,Mn2+,Co2+,Ni2+,Cu2+,Zn2+,Cd2+,Hg2+ on the spectra of salicylaldehyde azine were investigated by the UV-vis and fluorescence spectrum in ethanol-water mixed solvent.The result indicated that the UV-vis spectra of salicylaldehyde azine behaved special selectivity and sensitivity to H+ and Cu2+.The bathochromic shift of absorption peak and the change of intensity appeared with increasing pH and the concentrations of Cu2+.Fluorescence spectra also showed that only Cu2+ has effectively quenched the emission peak of weak fluorescence at 550 nm.