Premium
A novel approach to the photostabilisation of spironaphthoxazines
Author(s) -
Oda Hironori
Publication year - 1993
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.280580406
Subject(s) - photochromism , zinc , salt (chemistry) , nickel , cellulose , chemistry , metal , combinatorial chemistry , photochemistry , organic chemistry
Photochromic spironaphthoxazines are given considerable attention as functional dyes for reversible image‐recording media. Numerous potential metal complexes were synthesised to prolong the life of coloured species. The protecting effect of these compounds towards the decolorisation reaction in the dark or photofading of photocoloured species was examined on cellulose. It was found that the zinc or nickel salt of 2‐hydroxycarbazole‐1‐carboxylic acid is very effective for stabilising the coloured form of spironaphthoxazine.