G. A. Dushenko
Russian Academy of Sciences
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Featured researches published by G. A. Dushenko.
Russian Journal of General Chemistry | 2013
A. D. Beldovskaya; G. A. Dushenko; N. I. Vikrishchuk; L. D. Popov; Yu. V. Revinskii; I. E. Mikhailov
Novel derivatives of 1,2,4-triazol with benzthiazole fragment have been prepared, including Cu(II) and Be complexes. Their structure and spectral luminescent properties have been investigated. With ohydroxyphenylbenzthiazolyl-1,2,4-triazole as an example, the density functional theory has been applied to find the stable conformers with different structures of coordination nodes, stabilized by intramolecular hydrogen bonds between hydroxyl group hydrogen and either triazole of benzthiazole nitrogen.
Russian Journal of General Chemistry | 2014
A. D. Beldovskaya; G. A. Dushenko; N. I. Vikrishchuk; L. D. Popov; Yu. V. Revinskii; I. E. Mikhailov; V. I. Minkin
Metal chelates with 2-hydroxyphenyloxadiazole are widely used in development of organic light emitting diodes (OLEDs) as photoand electroluminescent materials [1, 2]. However, most of them are poorly soluble in organic and aqueous-organic media, banning the modern high-performance and low-cost technologies such as spin-coating or ink-jet printing in the OLEDs production [3]. In order to obtain highly soluble metal complex luminophors, we prepared 2-(2hydroxyphenyl)-5-(4-nonylphenyl)-1,3,4-oxadiazole II, containing long-chain alkyl substituent in the 5-aryl fragment that increased solubility of the product in organic medium; its beryllium complex III was prepared as well. N-Aroylhydrazide I obtained via benzoylation of salicylhydrazide was cyclized with thionyl chloride to form oxadiazole II. The latter reacted with BeSO4·4H2O in the presence of alkali to give the complex III in good yield. DOI: 10.1134/S1070363214010290
Russian Journal of Organic Chemistry | 2012
O. V. Serdyuk; I. V. Evseenko; G. A. Dushenko; Yu. V. Revinskii; I. E. Mikhailov
Previously unknown 2-[2-(9-anthryl)vinyl]quinolin-8-ol and 2-[2-(9-anthryl)vinyl]-8-methoxyquinoline were synthesized by condensation of 8-hydroxy(methoxy)-2-methylquinoline with 9-anthraldehyde in acetic anhydride, as well as by the Wittig reaction. The product structure was determined on the basis of their 1H NMR, IR, UV, and mass spectra and quantum-chemical calculations. 2-[2-(9-Anthryl)vinyl]-8-methoxyquinoline showed luminescence with a quantum yield φ of 0.25, which was considerably higher than that of its 8-hydroxy analog (φ = 0.067).
Russian Journal of Organic Chemistry | 2013
A. D. Beldovskaya; G. A. Dushenko; N. I. Vikrishchuk; L. D. Popov; Yu. V. Revinskii; I. E. Mikhailov; V. I. Minkin
Bidentate ligand systems based on 2-hydroxyphenyloxadiazole attract strong interest due to application of metal complexes derived therefrom in photoand electroluminescent devices as blue-emitting chromophores, as well as electron-transporting materials that improve charge transfer balance in organic light-emitting diodes (OLEDs) [1, 2]. In addition, organic luminophores based on diphenyloxadiazoles exhibit an anomalously high Stokes shift (ASS), which favors increase in the light yield as a result of reduced self-absorption and minimizes liminophore photodegradation [3].
Russian Journal of General Chemistry | 2015
I. E. Mikhailov; D. A. Svetlichnyi; O. N. Burov; Yu. V. Revinskii; G. A. Dushenko; V. I. Minkin
Condensation of 2-methylquinolines with 4-pyridinecarboxaldehyde in acetic acid anhydride has yielded 2-styryl-8-hydroxyquinoline along with its methyl and benzyl derivatives. Tosylation of 2-styryl-8-hydroxyquinoline has led to the corresponding p-toluenesulfonyloxy derivative. All the obtained compounds have revealed blue-green luminescence (λmax = 438–512 nm); however, only alkyl derivatives of 2-styryl-8-hydroxyquinoline possessed the high quantum yield (φ = 0.16–0.41).
Russian Journal of General Chemistry | 2015
I. E. Mikhailov; L. D. Popov; N. I. Vikrishchuk; A. D. Beldovskaya; Yu. V. Revinskii; G. A. Dushenko; V. I. Minkin
a Southern Scientific Center, Russian Academy of Sciences, ul. Chekhova 41, Rostov-on-Don, 344006 Russia e-mail: [email protected] b Southern Federal University, Rostov-on-Don, Russia c Institute of Arid Zones, Southern Scientific Centre, Russian Academy of Sciences, Rostov-on-Don, Russia d Scientific Research Institute of Physical and Organic Chemistry, Southern Federal University, Rostov-on-Don, Russia
Russian Journal of General Chemistry | 2016
I. E. Mikhailov; N. I. Vikrishchuk; L. D. Popov; G. A. Dushenko; A. D. Beldovskaya; Yu. V. Revinskii; V. I. Minkin
Abstract5-(2-Hydroxyphenyl)-3-methyl-1,2,4-oxadiazole and its O-methyl and O-acyl derivatives, as well as zinc(II) and copper(II) chelates, were synthesized. All these compounds showed luminescence with the emission maxima ranging from λ = 332 to 490 nm, but only 5-(2-methoxyphenyl)- and 5-(2-acetoxyphenyl)-3-methyl-1,2,4-oxadiazoles and zinc(II) complex of 5-(2-hydroxyphenyl)-3-methyl-1,2,4-oxadiazole were characterized by high luminescence quantum yield (φ = 0.308–0.452, 0.089–0.153, and 0.115–0.334, respectively). Stable conformers of 5-(2-hydroxyphenyl)-3-methyl-1,2,4-oxadiazole with different structures of the coordination entity were identified by DFT quantum chemical calculations.
Chemistry of Heterocyclic Compounds | 2014
I. E. Mikhailov; A. A. Kolodina; G. A. Dushenko; Yu. M. Artyushkina; V. V. Tkachev; S. M. Aldoshin; Yu. A. Sayapin; V. I. Minkin
An original three-step method has been developed for the synthesis of a new polydentate 8-hydroxyquinoline ligand system with a 1,3-tropolone fragment at position 2 of the quinoline ring. X-ray diffraction structural analysis, 1H and 13C NMR spectroscopy, and quantum-chemical calculations showed that this ligand exists in the NH-tautomeric form with the phenolic hydroxyl group in the exo position of the quinoline ring.
Russian Journal of Organic Chemistry | 2016
I. E. Mikhailov; Yu. M. Artyushkina; G. A. Dushenko; O. I. Mikhailova; Yu. V. Revinskii; Oleg N. Burov; V. I. Minkin
1,3,4-Oxadiazoles possess high and various pharmaceutical and biological activity [1], high intensive luminescence in the shortwave region of visual spectrum and good electron-conducting properties [2], they are thermally and chemically stable compounds that facilitates their wide application in different fields of agricultural [3] and medicinal chemistry [4], at obtaining highly effective organic and metal complex fluorescence dyes [5, 6], and also in production of modern electrooptical devices [7]. In this connection extending the range of such compounds and investigation of their spectral luminescent properties is an actual issue.
Russian Journal of Organic Chemistry | 2015
I. E. Mikhailov; A. A. Kolodina; Yu. M. Artyushkina; G. A. Dushenko; Yu. A. Sayapin; V. I. Minkin
Bidentate heterocyclic ligand systems with an =N(O-phenol) chelating fragment are widely used in the synthesis of highly efficient organic [1, 2] and metalcomplex luminophors [3–5], as well as of electron transport materials for organic light-emitting diodes (OLEDs). Among the latter, a particular place is occupied by 8-hydroxyquinoline and its derivatives [6]. High structural variability of the 8-hydroxyquinoline system makes it possible to create new photoand electroluminescent materials with high operational and performance characteristics [7]. Therefore, purposeful modification of 8-hydroxyquinoline derivatives with a view of obtaining new substances with practically useful properties is a topical problem.