A5019915031- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Synthesis and Characterization of Heterocyclic Compounds
- Quinazolinone synthesis and applications
- Synthesis and Biological Evaluation
- Luminescence and Fluorescent Materials
- Phenothiazines and Benzothiazines Synthesis and Activities
- Organic Light-Emitting Diodes Research
- Organic Electronics and Photovoltaics
- Radical Photochemical Reactions
- Crystallography and molecular interactions
- Synthesis and Reactivity of Heterocycles
- Photochemistry and Electron Transfer Studies
- Molecular Sensors and Ion Detection
- N-Heterocyclic Carbenes in Organic and Inorganic Chemistry
- Photodynamic Therapy Research Studies
- Molecular Junctions and Nanostructures
- Synthesis and Properties of Aromatic Compounds
- DNA and Nucleic Acid Chemistry
- Nonlinear Optical Materials Studies
- bioluminescence and chemiluminescence research
- Porphyrin and Phthalocyanine Chemistry
- Fluorine in Organic Chemistry
- Catalytic C–H Functionalization Methods
Ural Federal University
2015-2025
Abstract A series of V‐shaped luminophores containing electron‐withdrawing quinoxaline core and arylthienyl donor fragments at positions 2 3 has been successfully synthesized. Their photophysical properties in two solvents as well halochromism have studied, the ability 4‐diethylaminophenyl derivative to function colorimetric luminescent pH sensor demonstrated with significant color changes luminescence switching upon introduction acid.
Abstract Using the “1,2,4‐triazine” methodology, we have designed a series of new 9 H ‐pyrido[2,3‐ b ]indole‐based fluorophores/probes 4a‐e , 7a b, and 8a . Photophysical studies push‐pull fluorophores 8b revealed positive solvatochromic effect with Δμ > 15D Stokes shifts up to 270 nm. Experimental data theoretical calculations ground excited states compounds demonstrated that pyridoindoles 7a,b exhibit planarized intramolecular charge‐transfer (PLICT) state, which is accompanied by...
The synthesis of a series push–pull aryl and arylethynyl 2‐(thiophen‐2‐yl)quinazoline derivatives is presented. photophysical properties the newly generated compounds are also described. Functionalization (2‐thienyl)quinazoline fluorophore at 5′‐position with moieties was performed using bromination subsequent palladium‐catalyzed cross‐coupling reactions. Optical studies revealed that 4‐(diethylamino)phenyl 4‐(diphenylamino)phenyl emit green light upon irradiation, whereas their 4‐(9 H...
Amino-[1,1']-biphenyl-containing 3-aryl-[1,2,4]triazolo[4,3-c]quinazoline derivatives with fluorescent properties have been designed and synthesized. The type of annelation the triazole ring to pyrimidine one has unambiguously confirmed by means an X-ray diffraction (XRD) method; molecules are non-planar, aryl substituents form pincer-like conformation. UV/Vis photoluminescent target compounds were investigated in two solvents different polarities a solid state. samples emit broad range...
Abstract A series of novel 2‐(2‐pyridyl)quinazoline luminophores containing a donor aryl fragment at position 4 and methyl or methoxy groups benzene ring has been synthesized by efficient three‐step route. The linear optical properties have studied UV / Vis absorption photoluminescence spectra in two solvents. We revealed that introduction additional group the replacement substituents with ones lead to sequentially shift emission maximum blue region. 9 H ‐Carbazol‐9‐yl‐containing derivative...
Two series of novel [1,2,4]triazolo[4,3-
Two series of novel [1,2,4]triazolo[4,3-c]- and [1,2,4]triazolo[1,5-c]quinazoline fluorophores with 4’-amino[1,1′]-biphenyl residue at position 5 have been prepared via Pd-catalyzed cross-coupling Suzuki-Miyaura reactions. The treatment 2-(4-bromophenyl)-4-hydrazinoquinazoline orthoesters in solvent-free conditions or absolute ethanol leads to the formation [4,3-c]-annulated triazoloquinazolines, whereas [1,5-c] isomers are formed acidic media as a result Dimroth...
Abstract A series of novel V‐shaped luminophores containing electron‐withdrawing dibenzo[ f,h ]quinoxaline core and arylthienyl donor fragments at positions 2 3 has been synthesized. The absorption spectra (UV/vis) were recorded in several solvents, whereas emission solutions powders. solvatochromism as well halochromism obtained compounds was also explored. Electronic‐structure calculations using quantum‐chemistry methods performed to further analyse experimental results. All...
Design and synthesis of 2-(aryl/thiophen-2-yl)quinazolin-4(3H)-ones 4-cyano-2-arylquinazolines with Et2N-, Ph2N- or carbazol-9-yl- electron donating fragment are described. The key photophysical properties these compounds have been studied by UV/Vis absorption fluorescence spectroscopy in solvents different polarity (toluene MeCN). 2-(Aryl/thiophen-2-yl)quinazolin-4(3H)-ones show blue-green region toluene solution quantum yields up to 89% the case...
2-Thienyl/phenyl substituted quinazolin-4(3<italic>H</italic>)-ones were converted into 4,5-diphenyl-7<italic>H</italic>-thieno[2′,3′:3,4]pyrido[2,1-<italic>b</italic>]quinazolin-7-ones or amide alcoholysis product <italic>via</italic> Rh(<sc>iii</sc>)-catalyzed reaction of with diphenylacetylene.