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6603404 
Journal Article 
PHOTOCHROMISM AND NONSTATIONARY CONDUCTIVITY OF FILMS OF A COPOLYMER OF STYRENE AND INDOLINOSPIROPYRAN 
Merkulov, EI; Vannikov, AV; Chernov, GM; Arsenov, VD; Ermakova, VD; Cherkashin, MI; Kisilitsa, PP; , 
1976 
1 
Bulletin of the Academy of Sciences of the USSR. Division of Chemical Science
ISSN: 0568-5230 
PLENUM PUBL CORP 
NEW YORK 
25 
3 
698-700 
English 
WOS:A1976CM97700061 
1. The absorption spectra and the kinetics of the decolorization of a photochromic film of a copolymer of indolinospiropyran with styrene have been studied in the short-time region. The decolorization mechanism in the film differs significantly from the mechanism in solution, since only the most stable stereoisomers of the colored form are formed owing to the greater viscosity. 2. A correlation has been discovered between the decolorization kinetics and the decay of the nonstationary dark conductivity. It is most likely that the nonstationary conductivity is due to the equilibrium concentration of the charge carriers in the colored film of the copolymer, which is higher than in the original film. © 1976 Plenum Publishing Corporation.