Zobrazeno 1 - 10
of 24
pro vyhledávání: '"M. I. Knyazhansky"'
Publikováno v:
International Journal of Photoenergy, Vol 6, Iss 2, Pp 69-72 (2004)
The fluorescence spectrum of N-(1-anthryl)-2,4,6-trimethylpyridinium cation (1) has an anomalously high Stokes' shift. The fluorescence spectra of 1 in ethanol and butyronitrile are shifted to shortwavelength region and fluorescence quantum yield inc
Externí odkaz:
https://doaj.org/article/d816c90f3fb448e082e14391668baae9
Publikováno v:
International Journal of Photoenergy, Vol 1, Iss 3, Pp 161-164 (1999)
A novel photochromic compound with NH-N intramolecular H-bond (1-p-toluenesulphonylazo- 2,4,6,8-tetrakis(tert-butyl)phenoxazine) and the corresponding model structures (1-oxo-2,4,6,8-tetrakis(tertbutyl) phenoxazine, 2,4,5,7-tetrakis (tert-butyl )-1-(
Externí odkaz:
https://doaj.org/article/071cd15ab60246f68827385073f4835c
Publikováno v:
Journal of Molecular Structure. 526:65-79
The detailed comparative investigations of the mechanism of the fluorescent properties, formation and photochromic reaction in the salicylidene alkylimine (SALK) molecules with various N -Alk substituents and in corresponding more rigid model structu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::583c168164dc18c89fd2e38a7dc3c4fc
https://doi.org/10.1016/s0022-2860(00)00439-7
https://doi.org/10.1016/s0022-2860(00)00439-7
Autor:
Jacob R. Tymyansky, Nadezhda I. Makarova, Anatoly V. Metelitsa, M. I. Knyazhansky, Vladimir M. Feygelman
Publikováno v:
Journal of Photochemistry and Photobiology A: Chemistry. 132:59-66
The comparative detailed investigation of the Bication pyridinium systems (BCP) and corresponding model pyridinium cations (CP) has been carried out by the spectral luminescent methods. BCP consist of the two identical moieties bound by the various s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b06b953288ae1132d03720b21a25e2b
https://doi.org/10.1016/s1010-6030(99)00242-7
https://doi.org/10.1016/s1010-6030(99)00242-7
Publikováno v:
Journal of Photochemistry and Photobiology A: Chemistry. 131:17-21
The influence of the internal rotation on the photophysical parameters of the pyridinium cation N-methyl-9-phenyl-1,2,3,4,5,6,7,8-octahydroacridinium 9PA was studied by absorption and fluorescence spectroscopy as well as by semiempirical calculations
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6112566933f9f1da94e3666a17004b3c
https://doi.org/10.1016/s1010-6030(99)00218-x
https://doi.org/10.1016/s1010-6030(99)00218-x
Publikováno v:
Journal of Photochemistry and Photobiology A: Chemistry. 118:151-156
The detailed studies of the 2,4,6-(N-alkyl)triarylsubstituted pyridinium cations I as well as the large series of the model structures have been carried out by absorption, fluorescent and polarization methods in the solvents of various polarity and v
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e5fe87509fc332b68ee5d7b4fde17f84
https://doi.org/10.1016/s1010-6030(98)00377-3
https://doi.org/10.1016/s1010-6030(98)00377-3
Autor:
Eugeny P. Ivakhnenko, V. P. Pichko, A. I. Shif, Anatoly V. Metelitsa, M. I. Knyazhansky, Nadezhda I. Makarova
Publikováno v:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 298:115-120
Comparative findings of the experimental and quantum-chemical studies of the structures including Intramolecular H-Bond (OH N or MH N) with the endocyclic (A) and exocyclic (B) nitrogen atom have been obtained. The photochromic properties are shown o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8ed9afa65aadd5aaad5ad69071f5cc2d
https://doi.org/10.1080/10587259708036150
https://doi.org/10.1080/10587259708036150
Publikováno v:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 297:219-226
Novel photochromic bis-spirocyclic compounds, derivatives of di(4-cyclohexa-2,5-dien-1-one)benzimidazole 5a and di(4-cyclohexa-2,5-dien-1-one) perimidine 8a have been synthesized. Under UV-irradiation of their toluene solutions compounds 5a (λmax =
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b87b5f91021d8756a30d1efd23eff41
https://doi.org/10.1080/10587259708036125
https://doi.org/10.1080/10587259708036125
Autor:
M. I. Knyazhansky, Vladimir I. Minkin, Anatoly V. Metelitsa, S. M. Aldoshin, Boris S. Lukyanov, O. A. Kozina
Publikováno v:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 297:227-231
A series of novel spiropyram, derivatives of 3-phenyl-5,5-dimethylspiro (1,3-oxazalidin-2-thione)-4,2′-[2H]chromene and its 2-oxo analogue have been synthesized and their photochromic propedes studied. Molecular and crystal structures of four spiro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::334b7e10af56860ba6708f26ba8dfad9
https://doi.org/10.1080/10587259708036126
https://doi.org/10.1080/10587259708036126
Autor:
Anatoly V. Metelitsa, S. M. Lukyanov, M. I. Knyazhansky, L. A. Murad'yan, Alla V. Koblik, Vladimir I. Minkin
Publikováno v:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 297:213-218
A series of novel photochromic 2H-chromenes containing the ethynyl or ethoxy groups in position 4 (I, II) and an annelated pyrrole ring (III, IV) have been synthesized and their spectral and photochromic properties studied. The chromenes I - IV are c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f1fa7189c526efb730074c975d36973f
https://doi.org/10.1080/10587259708036124
https://doi.org/10.1080/10587259708036124