## Abstract The photochromism of 4โalkylโ__N__โ(4โmethoxysalicylidene)anilines was investigated in amorphous polymer matrices. The absorbance change after irradiation increased with extending the length of the alkyl chain due to the hindrance of conformational change and the stabilization of the co
โฆ LIBER โฆ
Research Trends in Photochromism: Control of Photochromism in Rigid Polymer Matrices and Other Advances
โ Scribed by Richard A. Evans; Georgina K. Such
- Publisher
- John Wiley and Sons
- Year
- 2006
- Weight
- 8 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0931-7597
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The kinetics of thermal cis-trans isomerisation of photochromic dibenzoazo 16-crown-4 ether was studied in several matrices (isooctane, polystyrene and pMMA samples fabricated in various ways) using UV-vis spectroscopy. The rate constants were found to be almost independent of the nature of the matr