Photochemical degradation of some aminoazobenzene and related 3-amino-5-nitro(2,1)benzisothiazole-based dyes in ethanolic solution

This paper reports some kinetic measurements of the photofading in ethanol of some aminoazobenzene and related 3-amino-5-nitro(2,1)benzisothiazole-based disperse dyes derived from, as coupling components, derivatives of N-benzyl N-phenyl-β-alanine with different substituents in the benzyl or phenyl...

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Bibliographic Details
Published in:Dyes and pigments 1992, Vol.19 (2), p.149-156
Main Author: Sokołowska-Gajda, Jolanta
Format: Article
Language:English
Subjects:
Applied sciences
Chemical industry and chemicals
Dyes, pigments
Exact sciences and technology
Industrial chemicals
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Summary:This paper reports some kinetic measurements of the photofading in ethanol of some aminoazobenzene and related 3-amino-5-nitro(2,1)benzisothiazole-based disperse dyes derived from, as coupling components, derivatives of N-benzyl N-phenyl-β-alanine with different substituents in the benzyl or phenyl residue. A fair linear relationship between the measured fading rate and σ o constants of ortho substituents in the phenyl ring was found. The influence of substituents in the benzyl group on the rate of fading was not noticeable.
ISSN:0143-7208
1873-3743
DOI:10.1016/0143-7208(92)87019-W