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Photochromism in spiroindolinonaphthoxazine dyes: Effects of alkyl and ester substituents on photochromic properties

✍ Scribed by Partington, Steven M.; Towns, Andrew D.

Book ID
121462837
Publisher
Elsevier Science
Year
2014
Tongue
English
Weight
572 KB
Volume
104
Category
Article
ISSN
0143-7208

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Polymeric siloxanes with a substituent a
Polymeric siloxanes with a substituent and the spirobenzopyran moiety: Effect of polar substituent on the photochromic properties
✍ Ren Nakao; Norikazu Ueda; Yasuo Abe; Toyokazu Horii; Hiroo Inoue πŸ“‚ Article πŸ“… 1996 πŸ› John Wiley and Sons 🌐 English βš– 314 KB πŸ‘ 2 views

Oligomeric polysiloxanes having the spirobenzopyran moiety and various substituents were prepared. The polymers were photochromic; the color changed from colorless to red on U V irradiation and the color faded on visible irradiation or on standing in the dark. The thermal decoloration was depressed