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Spiroindolinobenzopyrans photochromism

The photochromisms of spiroindolinobenzopyrans trapped in glass prepared by the sol-gel method have been stuied.36,37... [Pg.20]

Spirooxazine is an aza analogue of spiropyran in which the carbon atom at 3-position is replaced by a nitrogen atom. Historically, the photo-chromic phenomenon of spiroindolinooxazine derivatives was found after discovery of photochromic spiroindolinobenzopyran.72... [Pg.29]

Becker and Kolc first examined the photochromism of spiroindo-linobenzothiopyran 44, a thio analogue of spiroindolinobenzopyran (Scheme 19). The closed form of this spirobenzothiopyran is stable and the photocoloration is very slow, compared with spiropyrans.71... [Pg.35]

Y. T. Osano, K. Mitsuhashi, S. Maeda, and T. Matsuzaki. Structures of photochromic spiroindo-linobenzoxazines and a spiroindolinobenzopyran, Acta Crystallogr. Sect. C 47, 2137-2141 (1991). [Pg.354]

See other pages where Spiroindolinobenzopyrans photochromism is mentioned: [Pg.108]   
See also in sourсe #XX -- [ Pg.9 ]



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Spiroindolinobenzopyrans

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