Article ID Journal Published Year Pages File Type
5413689 Journal of Molecular Liquids 2007 4 Pages PDF
Abstract
A series of azo coumarin dyes was synthesized by the coupling of 4-hydroxy coumarin and diazonium salts, which obtained by diazotization of aniline and aniline derivatives. The azo dyes were characterized by IR, 1HNMR and UV-Visible spectra. The acid dissociation constants, Ka, of the dyes were determined using electronic spectroscopic method. Substitutions effect on this parameter was reported and discussed.
Related Topics
Physical Sciences and Engineering Chemistry Physical and Theoretical Chemistry
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