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Singlet and triplet excited states of a series of BODIPY dyes as calculated by TDDFT and DLPNO-STEOM-CCSD methods
Abstrakt
The singlet and triplet excited states of three iodine substituted BODIPY dyes differing by their substituent (-phenyl, -phenylOH and -phenylNO2) at the meso position of the BODIPY core (BOD) are investigated by (TDA)-TDDFT and DLPNO-STEOM-CCSD calculations. An assessment of hybrid (B3LYP and MN15) and double hybrid (SOS-PBE-QIDH and SOS-ωPBEPP86) exchange-correlation functionals is performed with respect to the DLPNO-STEOM-CCSD method for four types of transitions, namely πBOD → πBOD*, πPhenyl → πBOD*, πBOD → πPhenyl* and πBOD → σIodine*. It is found that MN15 and SOS-PBE-QIDH provide a balanced description of the excited states energies when compared to the DLPNO-STEOM-CCSD results. An investigation of the effects of solvent (dichloromethane), of the substituent and of geometrical relaxation in the excited states is then performed. In particular, the study discusses the possibility of populating charge transfer states (πPhenyl → πBOD* and πBOD → πPhenyl*) following photoexcitation in the first and second absorption bands in these systems.
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Informacje szczegółowe
- Kategoria:
- Publikacja w czasopiśmie
- Typ:
- artykuły w czasopismach
- Opublikowano w:
-
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
nr 26,
strony 25925 - 25935,
ISSN: 1463-9076 - Język:
- angielski
- Rok wydania:
- 2024
- Opis bibliograficzny:
- Sbai A., Guthmuller J.: Singlet and triplet excited states of a series of BODIPY dyes as calculated by TDDFT and DLPNO-STEOM-CCSD methods// PHYSICAL CHEMISTRY CHEMICAL PHYSICS -Vol. 26,iss. 40 (2024), s.25925-25935
- DOI:
- Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1039/d4cp02920h
- Źródła finansowania:
-
- COST_FREE
- Weryfikacja:
- Politechnika Gdańska
wyświetlono 4 razy
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