- 3,4,5,6-Tetrafluoro-1,2-dehydrobenzene in reactions with 1,2,4-triazines
-
Tetrafluoro-substituted aryne, 3,4,5,6-tetrafluoro-1,2-dehydrobenzene, has been generated in situ from 2-amino-3,4,5,6-tetrafluorobenzoic acid, and its reactivity in reactions with 1,2,4-triazines as dienes has been studied. In these reactions, the corresponding azine ring transformation products, i.e., 1,2,3,4-tetrafluoro-10-(1H-1,2,3-triazol-1-yl)pyrido[1,2-a]indoles, have been obtained, in the case of triazines activated by the presence of electron-withdrawing groups, such as 6-aryl-3-(2-pyridyl)-5-cyano-1,2,4-triazines. The crystal structure of the obtained products was confirmed by X-ray diffraction analysis.
- Kopchuk, Dmitry S.,Chepchugov, Nikolay V.,Gorbunov, Eugeny B.,Zyryanov, Grigory V.,Kovalev, Igor S.,Nosova, Emiliya V.,Slepukhin, Pavel A.,Rusinov, Vladimir L.,Chupakhin, Oleg N.
-
-
Read Online
- Novel functionalized indigo derivatives for organic electronics
-
A series of nine novel indigo derivatives, including diiodoindigo, octahalogenated indigoids and compounds with extended π-conjugated system, were synthesized, characterized and investigated as semiconductor materials in organic field-effect transistors (OFETs). Among them, 6,6′-diiodoindigo demonstrated the ambipolar behavior with balanced p-type and n-type mobilities. The complete substitution of hydrogens at the indigo core with halogen atoms led to low electron mobilities in OFETs. An extension of the conjugated system through the introduction of small aromatic substituents (thiophene and phenyl) resulted in predominant p-type behavior. Fusion of aromatic rings resulted in z-shaped dibenzoindigo, which showed poor charge transport properties due to the non-optimal arrangement of molecules along each other in the crystal lattice. The acquired data fulfilled the previously reported model based on the relationship between the chemical nature of substituents and their positions at the indigo core, optoelectronic properties of materials and their performance in OFETs. The results of this study will be useful for rational design of a new generation of the indigo-based semiconductors for biocompatible organic electronics.
- Klimovich, Irina V.,Zhilenkov, Alexander V.,Кuznetsova, Lidiya I.,Frolova, Lubov A.,Yamilova, Olga R.,Troyanov, Sergey I.,Lyssenko, Konstantin A.,Troshin, Pavel A.
-
-
- Organic electroluminescent materials and devices
-
The present invention relates to organic electroluminescent materials and devices. Provided are organometallic compounds. Also provided are formulations comprising these organometallic compounds. Further provided are OLEDs and related consumer products that utilize these organometallic compounds.
- -
-
Paragraph 0366-0367
(2021/01/12)
-
- ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES
-
Provided are organometallic compounds. Also provided are formulations comprising these organometallic compounds. Further provided are OLEDs and related consumer products that utilize these organometallic compounds.
- -
-
Paragraph 0182
(2021/01/26)
-
