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Aromatic β-diketone as a novel anchoring ligand in iridium(III) complexes for dye-sensitized solar cellsстатья
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: 16 сентября 2020 г.
- Авторы: Bezzubov Stanislav I., Zharinova Irina S., Khusyainova Alfiya A., Kiselev Yuri M., Taydakov Ilya V., Varaksina Evgenia A., Metlin Mikhail T., Tobohova Aiyyna S., Korshunov Vladislav M., Kozyukhin Sergei A., Dolzhenko Vladimir D.
- Журнал: European Journal of Inorganic Chemistry
- Том: 2020
- Номер: 34
- Год издания: 2020
- Издательство: John Wiley & Sons Ltd.
- Местоположение издательства: United Kingdom
- Первая страница: 3277
- Последняя страница: 3286
- DOI: 10.1002/ejic.202000372
- Аннотация: A novel β‐diketone ligand bearing a thiophene moiety and an anchoring Ph‐COOCH3 unit has been designed, prepared and used in synthesis of cyclometalated benzimidazole‐based iridium(III) complexes for application in dye‐sensitized solar cells (DSSC). The replacement of traditional 4,4'‐dicarboxy‐2,2'‐bipyridine by this aromatic β‐diketone results in excellent tuning the redox potentials and excited state properties of these IrIII complexes, one of which exhibits good efficiency when used as a dye in DSSC. All the complexes demonstrate reversible redox behavior, with oxidation potentials (Ir4+/Ir3+) strongly depending on the electron‐donor/withdrawing nature of the substituents in the cyclometalated ligands. Surprisingly, the latter has just a little effect on their luminescence spectra, in which structured emission bands are observed. Time‐resolved spectroscopic studies in combination with DFT calculations show that the complexes emit light by mixed 3MLCT–3LC excited states predominantly composed of the diketone ligand‐centered triplet state.
- Добавил в систему: Долженко Владимир Дмитриевич