Novel azo disperse dyes derived from aminothiophenes
|Title||Novel azo disperse dyes derived from aminothiophenes: synthesis and UV-visible studies.|
|Author(s)||A. Abd-El-Aziz, T. Afifi|
|Journal||Section Title: Dyes, Organic Pigments, Fluorescent Brighteners, and Photographic Sensitizers, Dyes and Pigments|
|Abstract||A no. of red to violet thienyl-2-azo and thienyl-5-azo disperse dyes were prepd. using Gewald's methodol. Structural characterization of these dyes was carried out using IR, NMR, and mass spectroscopies. UV-visible studies of the dyes in a no. of polar solvents showed a considerable difference in the Î»max. The introduction of various substituents to these azo dyes as well as the solvent polarity resulted in absorption in the visible region ranging from 461 to 555 nm. [on SciFinder(R)]|
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