Zobrazeno 1 - 10
of 90
pro vyhledávání: '"M. I. Cherkashin"'
Publikováno v:
Zeitschrift für Kristallographie - Crystalline Materials. 190:1-6
C 16 H 18 O 4 obtenu par polymerisation a l'etat solide des diacetylenes a ete etudie par RX (affinement jusqu'a R=0,051). Dans le cristal on a mis en evidence des rubans infinis des molecules apparentees par une translation, b=4,534 A. L'orientation
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 39:1375-1379
1′,3′,3′-Trimethylspiro[indoline-2′,3-3H-anthraceno[2,1-b][1,4]oxazine] was synthesized. The compound has photochromic properties in solutions and in polymeric matrices. It was found from the spectral data that the colored form of the spiroan
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 39:471-474
The photochromic properties of nitro-substituted spironaphthooxazines in polymer matrices of different polarity were investigated and the quantum yields of photocoloration and parameters of the dark decolorization reaction, which is a disperse proces
Autor:
M. I. Cherkashin, V. S. Marevtsev, V. M. Anisimov, A. S. Ataev, S. A. Senakhov, I. R. Mardaleishvili
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 40:2314-2315
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 39:1988-1988
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
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 38:727-731
1. A polymer is formed (2% yield) under the effect of heat, UV light, or γ irradiation of the crystals despite the prohibition of the occurrence of topochemical solid-phase polymerization in single crystals of 3,5-octadiyne-1,8-diol bismethacrylate.
Autor:
I. A. Khoduseva, K. M. Badyshtova, I. A. Morozova, A. N. Panarina, K. E. Belozerova, R. N. Zaslavskii, E. S. Brodskii, Yu. S. Zaslavskii, M. I. Cherkashin, V. A. Tumanova
Publikováno v:
Chemistry and Technology of Fuels and Oils. 10:50-54
1. It has been shown that the antiwear, antiscoring, and antifriction action of friction polymers involves an improvement in the microgeometry of the friction surfaces. 2. It has been established that friction polymers are formed upon introduction of
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 38:941-945
1. The PMR spectra of the closed forms of spironaphthopyran and spironaphthooxazine were interpreted. The PMR spectra of the photoinduced forms of these compounds were obtained for the first time. 2. The open form of spironaphthooxazine in nonpolar s
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 38:1383-1387
1. The strong bathochromic shift of the absorption bands of aminoazo compounds in acid medium is due to the formation of a cation of quinoid structure. 2. Aminoazo compounds are weak NH acids in aprotic polar solvents, and they form the corresponding