A5089493886- Organic Light-Emitting Diodes Research
- Synthesis and biological activity
- Luminescence and Fluorescent Materials
- Synthesis and Biological Evaluation
- Synthesis and Characterization of Heterocyclic Compounds
- Organic Electronics and Photovoltaics
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Synthesis and Reactivity of Heterocycles
- Conducting polymers and applications
- Phenothiazines and Benzothiazines Synthesis and Activities
- TiO2 Photocatalysis and Solar Cells
- Sulfur-Based Synthesis Techniques
- Photonic Crystals and Applications
- Chemical Synthesis and Analysis
- Perovskite Materials and Applications
- GaN-based semiconductor devices and materials
- Advanced Photocatalysis Techniques
- Inorganic Chemistry and Materials
- Catalytic C–H Functionalization Methods
- Photochemistry and Electron Transfer Studies
- Quantum Dots Synthesis And Properties
- Structural and Chemical Analysis of Organic and Inorganic Compounds
- Lanthanide and Transition Metal Complexes
- Synthesis and Reactivity of Sulfur-Containing Compounds
N.D. Zelinsky Institute of Organic Chemistry
2015-2024
South Ural State University
2019-2024
Russian Academy of Sciences
2019-2022
Moscow State University
2014
An efficient synthesis of 4,7‐dibromo[1,2,5]thiadiazolo[3,4‐ d ]pyridazine is reported. For the first time, palladium‐catalysed cross‐coupling reactions a dihalo derivative was found to be powerful tool for selective formation various mono‐ and diarylated derivatives strongly electron‐accepting heterocycles. Suzuki–Miyaura coupling can successfully employed preparation mono‐arylated derivatives, whereas Stille useful both diaryl(hetaryl)ated The cyclic voltammogram showed that easily...
Four new D-A-π-A metal-free organic sensitizers for dye-sensitized solar cells (DSSCs), with [1,2,5]thiadiazolo[3,4-d]pyridazine as internal acceptor, thiophene unit π-spacer and cyanoacrylate anchoring electron have been synthesized. The donor moiety was introduced into by nucleophilic aromatic substitution Suzuki cross-coupling reactions, allowing design of the attached to heterocyclic acceptor not only carbon atom, it is in a majority DSSCs, but nitrogen atom also. Although low values...
The possibility of using a single light-emitting layer consisting newly synthesized fluorescent small organic molecules D-A-π-A type incorporated into conductive matrix together with an electron Alq3 in order to form radiation candle light-style OLEDs was shown for the first time. A record low color temperature 1722 K OLED achieved, which is by 80 lower than that best devices reported previously.
A pyridazine thiadiazole acceptor (PzT) has been utilised in the synthesis of a novel low band-gap D–A copolymer PTTPz.
A safe and efficient synthesis of 4,7-dibromo[1,2,5]thiadiazolo[3,4-d]pyridazine from the commercial diaminomaleonitrile is reported. Conditions for selective aromatic nucleophilic substitution one or two bromine atoms by oxygen nitrogen nucleophiles are found, whereas thiols formed bis-derivatives only. Buchwald-Hartwig Ullmann techniques successful incorporation a weak base, such as carbazole, into [1,2,5]thiadiazolo[3,4-d]pyridazine core. The formation rather stable S…η²-(N=N) bound...
New fluorescent D-A-D dyes containing 9-(p-tolyl)-2,3,4,4a,9,9a-hexahydro-1H-carbazole as a donor unit and 2,1,3-benzochalcogenadiazoles an electron-withdrawing group were synthesized. The photoluminescent electroluminescent properties of novel for OLED application investigated. It was demonstrated that the replacement lightweight heteroatoms by heavier ones enables fine tuning maximum emission without significantly reducing luminescence quantum yield. yield value 62.6% derivatives based on...
Palladium-catalyzed direct (het)arylation reactions of strongly electron-withdrawing tricyclic benzo[1,2-d:4,5-d']bis([1,2,3]thiadiazole) and its 4,8-dibromo derivative were studied; the conditions for selective formation mono- bis-aryl derivatives found. The reaction 4,8-dibromobenzo[1,2-d:4,5-d']bis([1,2,3]thiadiazole) with thiophenes in presence palladium acetate as a catalyst potassium pivalate base, depending on used, selectively gave both bis-thienylated benzo-bis-thiadiazoles low to...
Novel fluorescent 1,2,5-selenadiazolo[3,4- d ]pyridazines demonstrate intensive emission in the NIR spectral region of 900–1100 nm; introduction selenium leads to Kasha rule violation followed by a red-shift spectra.
An efficient synthesis of hydrolytically and thermally stable 4,8-dibromobenzo[1,2-d:4,5-d’]bis([1,2,3]thiadiazole) by the bromination its parent heterocycle is reported. The structure was confirmed X-ray analysis. conditions for selective aromatic nucleophilic substitution one bromine atom in this heterocyclic system nitrogen nucleophiles are found, whereas thiols formed bis-derivatives only. Suzuki–Miyaura cross-coupling reactions were found to be an effective method formation various...
Bromoderivatives of benzofused 1,2,5-thiadiazoles are important precursors for the synthesis dyes, which widely used to design effective photovoltaic materials. In this study, 4-bromobenzo[1,2-d:4,5-d′]bis([1,2,3]thiadiazole was selectively obtained from bromination benzo[1,2-d:4,5-d′]bis([1,2,3]thiadiazole. The structure newly synthesized compound established by means elemental analysis, high-resolution mass spectrometry, 1H-, 13C-NMR, IR and UV spectroscopy spectrometry.
Dihalogenated derivatives of [1,2,5]chalcogenadiazolo[3,4-d]pyridazines are interest as precursors for both photovoltaic materials and biologically active compounds. In this communication, 4,7-dichloro[1,2,5]oxadiazolo[3,4-d]pyridazine 1-oxide was prepared via the reaction 3,6-dichloro-5-nitropyridazin-4-amine with oxidizing agents; best yield target compound achieved in (diacetoxyiodo)benzene benzene by heating at reflux two hours. The structure newly synthesized established means 13C-NMR...
Dihalogenated derivatives of 1,2,5-chalcogenadiazoles fused with benzene or heterocyclic rings are interest as starting compounds for photovoltaic materials. The 1,2,5-chalcogenadiazole ring in these heterocycles was most commonly prepared from the corresponding ortho-diamine moiety. In this communication, 3,6-dibromopyridazine-4,5-diamine via reaction 4,7-dibromo[1,2,5]thiadiazolo[3,4-d]pyridazine sodium methoxide THF by heating at reflux four hours. structure newly synthesized compound...