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Photoprocesses in bis(15-crown-5)-1,3-distyrylbenzene and its complexes with metal perchloratesстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 4 июня 2021 г.
- Авторы: Atabekyan L.S., Avakyan V.G., Chibisov A.K., Nuriev V.N., Medvedko A.V., Koshkin A.V., Gromov S.P.
- Журнал: Journal of Photochemistry and Photobiology A: Chemistry
- Том: 414
- Год издания: 2021
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Номер статьи: 113293
- DOI: 10.1016/j.jphotochem.2021.113293
- Аннотация: Photoprocesses in bis(15-crown-5)-1,3-distyrylbenzene (DSB) and its complexes with barium and lead perchloatewere studied in MeCN by absorption, luminescence, and laser kinetic spectroscopy. The triplet DSB molecules are involved in the degradation of electronic excitation energy, together with fluorescence processes. The most efficient intersystem crossing accompanied by a decrease in the DSB fluorescence quantum yield, occurs for the lead perchlorate complex. Using quantum chemistry methods (DFT and TDDFT), the geometry, structure, and transition energies to the S1 state were calculated for trans- and cis-isomers of DSB in the gas phase and with allowance for the solvent and for 1:1 and 2:2 DSB complexes with barium cation in the ground and excited states. The orbital structures of the 2:2 complexes were calculated by ab initio method, and conclusions were drawn about the possibility of [2 + 2]-photocycloaddition reaction.
- Добавил в систему: Громов Сергей Пантелеймонович