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Improvement of light fastness of natural dyes. Part 2: Effect of functional phenyl esters on the photofading of carthamin in polymeric substrate †
Author(s) -
Oda Hironori
Publication year - 2001
Publication title -
coloration technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 49
eISSN - 1478-4408
pISSN - 1472-3581
DOI - 10.1111/j.1478-4408.2001.tb00071.x
Subject(s) - chemistry , substrate (aquarium) , cellulose , quenching (fluorescence) , nickel , cellulose acetate , singlet oxygen , polymer chemistry , oxygen , organic chemistry , fluorescence , oceanography , physics , quantum mechanics , geology
The photofading behaviour of carthamin in cellulose acetate film was investigated. A contribution from singlet oxygen to that fading was suggested. Phenyl esters containing nickel sulphonate quenching groups were prepared and the protecting effect of these compounds towards the photofading of carthamin was examined in cellulose acetate film. It is proposed that nickel sulphonate derivatives of phenyl esters can be applied as effective stabilisers against the fading of natural dyes.