Institute of Organic Chemistry of the NAS of Ukraine

Kiev, Ukraine

Institute of Organic Chemistry of the NAS of Ukraine

Kiev, Ukraine
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Davidenko N.A.,Taras Shevchenko National University | Ishchenko A.A.,Institute of Organic Chemistry of the NAS of Ukraine | Skryshevsky V.A.,Taras Shevchenko National University | Studzinsky S.L.,Taras Shevchenko National University | Mokrinskaya E.V.,Taras Shevchenko National University
Molecular Crystals and Liquid Crystals | Year: 2011

Features of the electrical conductivity and the photoconductivity of polyvinylbutyral films containing silicon nanoparticles and similar films doped with cationic and anionic polymethine dyes are studied. Sensitization of the photoelectric effect by dyes with various ionicities in films is explained by the possible photogeneration of holes and electrons from dye molecules and the intrinsic bipolar conductivity of silicon nanoparticles. It is assumed that the electronic conductivity in silicon nanoparticles is higher as compared with that in nanoparticles with p-type conductivity. Copyright © Taylor & Francis Group, LLC.


Dyachenko V.D.,Taras Shevchenko National University | Toropov A.N.,Taras Shevchenko National University | Rusanov E.B.,Institute of Organic Chemistry of the NAS of Ukraine
Chemistry of Heterocyclic Compounds | Year: 2015

[Figure not available: see fulltext.]Upon alkylation of 2-aminoprop-1-ene-1,1,3-tricarbonitrile with phenacyl bromides, 2-(2-aryl-2-oxoethyl)-2-(5-aryl-3-cyano-1Н-pyrrol-2-yl)malononitriles are formed instead of previously presumed isomeric 2-(3,8-diaryl-6-oxo-2,7-diazaspiro[4.4]nona-2,8-dienes. The structure of 3-cyano-2-[2-(4-methoxyphenyl)-2-oxoethyl]-2-[5-(4-methoxyphenyl)-1Н-pyrrol-2-yl]malononitrile was studied by X-ray structural analysis. © 2015 Springer Science+Business Media New York


Davydova Y..,Institute of Organic Chemistry of the NAS of Ukraine | Sokolenko T.M.,Institute of Organic Chemistry of the NAS of Ukraine | Vlasenko Y.G.,Institute of Organic Chemistry of the NAS of Ukraine | Yagupolskii Y.L.,Institute of Organic Chemistry of the NAS of Ukraine
Chemistry of Heterocyclic Compounds | Year: 2015

[Figure not available: see fulltext.]In the present study, the possibility of converting [5-(1,1,2,2-tetrafluoroethoxy)-4-phenylthiazol-2-yl]amine to 2-halothiazoles and an azo compound via diazotation of the amine functionality was demonstrated. It was found that the reaction of [5-(1,1,2,2-tetrafluoroethoxy)-4-phenylthiazol-2-yl]amine with acyl and sulfonyl chlorides leads to products resulting from substitution exclusively at the exocyclic nitrogen atom. The halogen atom at position 2 of thiazole ring is substituted by S-nucleophiles or hydrogen atom upon catalytic hydrogenation on Pd/C. 2-Bromo-5-(1,1,2,2-tetrafluoroethoxy)-4-phenylthiazole was successfully employed in the synthesis of the corresponding α-thiazolylbenzyl alcohol and 2-formylthiazole via conversion to a organomagnesium intermediate. The stability of the tetrafluoroethoxy group in the above transformations was demonstrated. © 2015 Springer Science+Business Media New York


Dyachenko V.D.,Taras Shevchenko National University | Toropov A.N.,Taras Shevchenko National University | Rusanov E.B.,Institute of Organic Chemistry of the NAS of Ukraine
Chemistry of Heterocyclic Compounds | Year: 2015

Upon alkylation of 2-aminoprop-1-ene-1,1,3-tricarbonitrile with phenacyl bromides, 2-(2-aryl-2-oxoethyl)-2-(5-aryl-3-cyano-1H-pyrrol-2-yl)malononitriles are formed instead of previously presumed isomeric 2-(3,8-diaryl-6-oxo-2,7-diazaspiro[4.4]nona-2,8-dienes. The structure of 3-cyano-2-[2-(4-methoxyphenyl)-2-oxoethyl]-2-[5-(4-methoxyphenyl)-1H-pyrrol-2-yl]malononitrile was studied by X-ray structural analysis. © 2015 Springer Science+Business Media New York.


Davidenko N.A.,Taras Shevchenko National University | Dehtarenko S.V.,Taras Shevchenko National University | Getmanchuk Yu.P.,Taras Shevchenko National University | Ishchenko A.A.,Institute of Organic Chemistry of the NAS of Ukraine | And 7 more authors.
Molecular Crystals and Liquid Crystals | Year: 2011

Photophysical and information properties of the holographic recording media (HRM) based on films of ferrocenyl-containing siloxane oligomer, glycidylcarbazole-butylglycidylic ether cooligomer, ferrocenemethylated oligoglycidylcarbazole, and cooligomer of o-carboxybenzoilferrocene glycidylic ether doped with squarilic dye and(or) with merocyanine dye based on ferrocene and tetranitrofluorene are investigated. It is found that the holographic sensitivity is absent for the media based on ferrocenyl-containing siloxane oligomer, and that the holographic sensitivity is present for the films based on glycidylcarbazole. It has been found that the holographic sensitivity and the photoconductivity of the media based on glycidylcarbazole cooligomers increases with the ferrocene content. This effect has been explained by the influence of iron ions on the rate of singlet-triplet conversion in photogenerated pairs of charges. Copyright © Taylor & Francis Group, LLC.

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