Zobrazeno 1 - 10
of 20
pro vyhledávání: '"V. D. Arsenov"'
Autor:
P. P. Kisilitsa, G. M. Chernov, V. D. Arsenov, M. I. Cherkashin, V. D. Ermakova, A. V. Vannikov, E. I. Merkulov
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 24:2374-2377
1. In the pulsed photoexcitation of a solution of a copolymer of indolinospiropyran with styrene, various stereoisomers of the merocyanine form are formed. 2. The proposed scheme of photoconversions of the copolymer includes a step of formation of a
Autor:
V. D. Arsenov, M. O. Cherkashin
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 31:1129-1132
1. The photochromic behavior of the spiropyrans studied in a polystyrene matrix is satisfactorily described by three relaxation times of the polymer. The redistribution of the contribution of the contribution of the relaxation processes on prolonged
Publikováno v:
Polymer Science U.S.S.R.. 19:54-63
The spectral, kinetic and photochemical properties of solutions of copolymers of indolinospiropyran with various vinyl comonomers have been studied. It is shown that increase in the polarity of the solvent, in the size of the side group of the comono
Publikováno v:
Polymer Science U.S.S.R.. 18:945-949
A study was made of the copolymerization of a photochromic monomer, 1-(β-methacryloyloxyethyl)-3,3-dimethyl-6′-nitrospiro(indoline-2,2′ [2H-1]-benzopyran) with styrene,2-vinylnaphthalene, 9-vinylanthracene,4-vinylpyridine, 1-methacryloyloxymethy
Publikováno v:
Russian Chemical Reviews. 46:145-157
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 24:2378-2381
1. In solutions of copolymers of indolinospiropyran and mixtures of the corresponding monomers with a model photochrome, the existence of spiropyran and merocyanine forms of the photochrome is possible. 2. In the case of a nonpolar solvent and a weak
Autor:
V. D. Arsenov, V.S. Marevtsev, S.D. Mal'tsev, Ya.S. Freidzon, V.P. Shibayev, Cherkashin Mikhail I, N.A. Plate
Publikováno v:
Polymer Science U.S.S.R.. 24:2635-2641
The photochromic properties of the indolinospiropyranes dissolved in poly-n-alkylmethacrylates with a different length of the alkyl substituent have been studied. In polyhexylmethacrylate a heavy hypsochromic shift of the photo-induced spectrum and a
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 33:1799-1806
1. The spectral and kinetic properties of the photoinduced colored species in a solution of 6-nitrospiropyrans in hexane are determined by associates of colored and colorless species. 2. The spectral bands at 580 and 615 nm belong to associates of th
Publikováno v:
Chemistry of Heterocyclic Compounds. 23:961-964
Some photochromic indoline spiropyrans have been synthesized and their thermal and photostability examined in films and in solution. Introduction of the NO2 group into the indoline moiety of the molecule stabilizes the spiropyran form in solution and
Publikováno v:
Polymer Science U.S.S.R.. 27:2837-2843
The possibility of slowing down the thermal bleaching of the coloured form of indolenospiropyranes with electron-donor substituentsin the chromene part of the molecule by chemically combining the photochromic molecules with the main or with a pendant