ИСТИНА

Organic electronics growing very fast due to design and developing of novel functional materials as well as device structures optimization. Such advantages of organic electronics as light weight and flexibility originates from intrinsic properties of organic semiconductors, which are π-conjugated organic molecules, oligomers or polymers. Conjugation means the presence of π-orbitals delocalized over the whole or a part of a molecule containing linearly conjugated or annulated (hetero)aromatic rings. Nowadays, annulated small molecules, oligomers and polymers containing annulated fragments are increasingly used as semiconductor materials in organic electronics. This is due to the fact that annulation, unlike linear conjugation, forms more rigid molecular fragments with both stronger intermolecular interaction and fewer vibrational and rotational degrees of freedom, which reduces dynamic disorder and leads to an increase in the main characteristic of semiconductors – charge carrier mobility. In the lecture a classification of different annulated fragments and molecules will be introduced, examples of their synthesis1,2 will be given and application in various organic electronics devices – organic field-effect transistors (OFETs) and gas sensors based on them3, organic light-emitting transistors (OLETs)4, electrolyte-gated organic field-effect transistors (EGOFETs)5 and biosensors based on them6,7, organic photovoltaics8,9 and perovskite solar cells10 – will be presented. A particular attention will be devoted to comparison of the properties of different annulated molecules with their linearly conjugated analogs. This work was supported by the Russian Ministry of Science and Education (Agreement No. D24-0493 with MIPT in the framework of grant No. 075-15-2024-560). 1 Charushin V.N., Verbitskiy E.V., Chupakhin O.N. at. al., Russ. Chem. Rev. 2024, 93(7), RCR5125. 2 Gudkova I.O., Sorokina E.A., Zaborin E.A., Polinskaya M.S., Borshchev O.V., Ponomarenko S.A. Rus. J. Org. Chem. 2024, 60(6), 1074-1085. 3 Polinskaya M.S., Trul A.A., Borshchev O.V. at. al., J. Mater. Chem. C, 2023, 11(5), 1937- 1948. 4 Fedorenko R.S., Kuevda A.V., Trukhanov V.A. at. al., Adv. Electron. Mater. 2022, 8(7), 2101281. 5 Shaposhnik P.A., Trul A.A., Poimanova E.Yu., Sorokina E.A., Borshchev O.V., Agina E.V., Ponomarenko S.A. Org. Electron. 2024, 129, 107047. 6 Poimanova E.Yu., Shaposhnik P.A., Anisimov D.S. at. al. ACS Appl. Mater. Interfaces 2022, 14(14), 16462-16476. 7 Poimanova E.Yu., Zavyalova E.G., Kretova E.A. at.al. Chemosensors 2023, 11(8), 464. 8 Balakirev D.O., Mannanov A.L., Emelianov N.A. at. al. Dyes Pigm. 2023, 216, 111343. 9 Yang X., Gao Y., Sun R. at. al. Macromolecules 2024, 57(3), 1011-1020. 10 Latypova A.F., Emelianov N.A., Balakirev D.O. at. al. ACS Appl. Energy Mater. 2022, 5(5), 5395-5403.