Theoretical study of 8-hydroxyquinoline derivatives as potential antennas in lanthanide complexes: Photophysical properties and elucidation of energy transfer pathways
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Fecha
2022-05-15
Profesor/a Guía
Facultad/escuela
Idioma
en
Título de la revista
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Título del volumen
Editor
John Wiley and Sons Inc
Nombre de Curso
Licencia CC
CC BY 4.0 DEED
Atribución 4.0 Internacional
Licencia CC
https://creativecommons.org/licenses/by/4.0/deed.es
Resumen
A series of 8-hydroxyquinoline derivatives were theoretically characterized and tested as potential antennas in a set of designed lanthanide complexes. The molecular structure and ligand localized nature of the excited states were studied in the framework of the multiconfigurational methods CASSCF/NEVPT2 combined with TD-DFT-based approaches, which allow applying a fragmentation scheme in the analysis of the most probable sensitization pathway via antenna effect. The photophysical properties of all the complexes and antennas were carefully analyzed, predicting the most probable energy transfer pathways. Rate constants for photophysical processes involved in the mechanism showed a significant contribution of the vibronic coupling in all cases, and the predominant intersystem-crossing between S1 and T1 states was demonstrated from the analysis of the nature of the wave function of those states. The energy transfer process described herein demonstrates the possibility of Eu(III) and Nd(III) sensitization by the studied ligands. The proposed methodology gives a complete picture of the antenna excited state dynamics. © 2022 Wiley Periodicals LLC.
Notas
Indexación: Scopus.
Palabras clave
8-hydroxyquinoline derivatives, Antenna effect, CASSCF/NEVPT2, Energy transfer, ISC, Lanthanides, TD-DFT, Vibronic coupling
Citación
International Journal of Quantum Chemistry, Volume 122, Issue 10, 15 May 2022, Article number e26880
DOI
10.1002/qua.26880