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Quantitative study on the polar effects of substituents in polymerization

โœ Scribed by Yu.L. Spirin

Book ID
113173248
Publisher
Elsevier Science
Year
1967
Tongue
English
Weight
98 KB
Volume
9
Category
Article
ISSN
0021-9517

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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
โœ Ren Nakao; Norikazu Ueda; Yasuo Abe; Toyokazu Horii; Hiroo Inoue ๐Ÿ“‚ Article ๐Ÿ“… 1996 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 314 KB ๐Ÿ‘ 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