Singlet and triplet excited states of a series of BODIPY dyes as calculated by TDDFT and DLPNO-STEOM-CCSD methods
Abstract
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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- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
no. 26,
pages 25925 - 25935,
ISSN: 1463-9076 - Language:
- English
- Publication year:
- 2024
- Bibliographic description:
- 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:
- Digital Object Identifier (open in new tab) 10.1039/d4cp02920h
- Sources of funding:
-
- Free publication
- Verified by:
- Gdańsk University of Technology
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