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Общее количество найденных документов : 70
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1.
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    (A)symmetric chromophores based on cyano and fluorine-substituted 2,3-bis(5-arylthiophen-2-yl)quinoxalines: Synthesis, photophysical properties and application prospects / T. N. Moshkina, E. V. Nosova, A. E. Kopotilova [et al.] // Dyes and Pigments. - 2022. - Vol. 204. - Ст. 110434
Рубрики: ХИМИЧЕСКИЕ НАУКИ

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2.
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    Synthesis and photophysical properties of pyridyl- and quinolinyl-substituted 4-(4-aminophenyl)quinazolines / T. N. Moshkina, E. V. Nosova, A. E. Kopotilova [et al.] // Journal of photochemistry and photobiology A: Chemistry. - 2022. - Vol. 429. - Ст. 113917
Рубрики: ХИМИЧЕСКИЕ НАУКИ

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3.
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    Substituted 2-(2-hydroxyphenyl)–3H-quinazolin-4-ones and their difluoroboron complexes: Synthesis and photophysical properties / T. N. Moshkina, E. V. Nosova, V. N. Charushin [et al.] // Spectrochimica acta part A: molecular and biomolecular spectroscopy. - 2021. - Vol. 252. - P119497
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ESIPT -- FLUORESCENCE -- O-LIGAND -- BF2-COMPLEX2-(2-HYDROXYPHENYL)–3H-QUINAZOLIN-4-ONES
Аннотация: 2-(2-Hydroxyphenyl)–3H-quinazolin-4-ones with diverse substituents at phenol ring and their six-membered difluoroboron complexes have been synthesized via few-stage approach. The photophysical properties of target compounds have been investigated in two solvents as well as in the solid state. The nature of substituents and substitution point in the phenol moiety of ligands and resulting BF2-complexes on the photophysical properties of dyes have been explored. The complex bearing two t-Bu groups proved to be the most emissive in solid state, whereas its 5-methoxy and 4-diethylamino counterparts possess strong emission in toluene solution. The dyes exhibited large Stokes shifts which was attributed to excited state intramolecular proton transfer (ESIPT). Additionally, fluorescence of quinazolinones in the mixture of THF/water was studied. All ligands demonstrated emission enhancement with increase of water fraction which was due to aggregation induced emission.

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4.
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   T 44


   
    The Rh(III)-catalysed C-H/N-H annulation of 2-thienyl- and 2-phenyl-quinazolin-4(3: H)-ones with diphenylacetylene / T. N. Moshkina, E. V. Nosova, G. N. Lipunova [et al.] // New Journal of Chemistry. - 2021. - Vol. 45, № 19. - P8456-8466
ББК Г
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A series of 4,5-diphenyl-7H-thieno[2′,3′:3,4]pyrido[2,1-b]quinazolin-7-ones was synthesized via the Rh(III)-catalyzed annulation of 2-thienylquinazolin-4(3H)-ones with diphenylacetylene. 2-Phenylquinazolin-4(3H)-one amide alcoholysis and double C–H functionalization proceeded under the same reaction conditions with the formation of 2,3,7,8-tetraphenyl-1H-benzo[d,e][1,8]-naphthyridine derivatives. All compounds possess fluorescence properties in MeCN and toluene solutions as well as in the solid state. The aggregation induced emission (AIE) properties and the ability to detect Fe3+ cations were evaluated.

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5.
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    Synthesis of “push-pull” fluorophores based on 2-aryl(heteryl)quinazolines / T. N. Moshkina, A. E. Kopotilova, E. V. Nosova [et al.] // Mendeleev 2021: book of abstracts XII international conference on chemistry for young scientists. - Saint Petersburg, 2021. - P607
Рубрики: ХИМИЧЕСКИЕ НАУКИ

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6.
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    1,2,4,5-Tetrazine derivatives as components and precursors of photo- and electroactive materials / G. N. Lipunova, E. V. Nosova, G. V. Zyryanov [et al.] // Organic chemistry frontiers. - 2021. - Vol. 8, № 18. - P5182-5205
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Extensive research on the synthesis and application of tetrazine derivatives for electronic devices, luminescent elements, photoelectric conversion elements, and image sensors has been published recently. This review covers reported data on the modern trends in the design of functionalized tetrazines obtained within the period 2010–2020. Aryl(heteroaryl) and arylvinyl derivatives of tetrazines and their photoluminescence and application for fluorogenic probes are discussed. Examples of photosensitive oligomers and polymer 3,6-dithienyltetrazines are reviewed.

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7.
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    Synthesis and photophysical studies of novel v-shaped 2,3-bis{5-aryl-2-thienyl}(dibenzo[f,h])quinoxalines / T. N. Moshkina, E. V. Nosova, A. E. Kopotilova [et al.] // Asian journal of organic chemistry. - 2020. - Vol. 9, № 4. - P673-681
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
CROSS-COUPLING -- DIBENZO[F,H]QUINOXALINE -- DONOR-ACCEPTOR-DONOR CHROMOPHORES -- FLUORESCENCE -- SENSORS
Аннотация: A series of novel V-shaped luminophores containing electron-withdrawing dibenzo[f,h]quinoxaline core and arylthienyl donor fragments at positions 2 and 3 has been synthesized. The absorption spectra (UV/vis) were recorded in several solvents, whereas emission spectra were recorded in solutions and powders. The solvatochromism as well as halochromism of obtained compounds was also explored. Electronic-structure calculations using quantum-chemistry methods were performed to further analyse experimental results. All characteristics were compared with that of 2,3-bis(arylthienyl)quinoxaline counterparts. The halochromic effect studies showed that upon gradual addition of trifluoroacetic acid (TFA) to the toluene solution of diethylaminophenyl-substituted dibenzo[f,h]quinoxaline chromophore, absorption and emission changed. Observed band shifts were more distinct in the case of mentioned quinoxaline than for other derivatives. All of the (dibenzo[f,h])quinoxaline chromophores exhibited good sensitivity toward nitro-containing explosives with high Stern-Volmer constants up to 57800 M−1, these results are remarkable for such heterocyclic systems.

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8.
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    Synthesis of novel 8-nitrosubstituted 1,3-benzothiazin-4-ones / E. V. Nosova, O. A. Batanova, G. N. Lipunova, V. N. Charushin // Mendeleev Communications. - 2020. - Т. 30, № 4. - P427
Рубрики: ХИМИЧЕСКИЕ НАУКИ

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9.
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    Synthesys and photophysical properties of 2-(het)arylderivatives of 4-morpholinylquinazolines / E. V. Nosova, T. N. Moshkina, Ju. V. Permyakova [et al.] // Actual problems of organic chemistry and biotechnology. - Екатеринбург, 2020. - P281-283
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
4-(4-MORPHOLINYL)QUINAZOLINES -- CROSS-COUPLING -- FLUORESCENCE

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10.
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    Moshkina, T. N.
    BF2 complexes based on 4-phenylquinazoline: synthesis and photophysical properties / T. N. Moshkina, E. V. Nosova, G. N. Lipunova, V. N. Charushin // Актуальные направления фундаментальных и прикладных исследований: Материалы XXII международной научно-практической конференции. - Morrisville, 2020. - P86-88
Рубрики: ХИМИЧЕСКИЕ НАУКИ

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