RT Journal Article
T1 Folded–twisted mechanisms control dynamic redox properties, photophysics and electron transfer of anthanthrene-quinodimethanes
A1 Cárdenas Valdivia, Abel
A1 Lirette, Fréderic
A1 Marín-Beloqui, José Manuel
A1 Carreras, Abel
A1 Casanova, David
A1 Boismenu-Lavoie, Joël
A1 Morin, Jean-François
A1 Casado-Cordón, Juan
K1 Electrones - Transporte
K1 Fotoelectricidad
K1 Química física
AB The synthesis, electrochemical, spectroelectrochemical, photophysical and light induced electron transfer reactions in two new anthanthrene quinodimethanes have been studied and analyzed in the context of dynamic electrochemistry. Their properties are dependent on the interconversion between folded and twisted forms, which are separated by a relatively small energy range, thus allowing to explore their interconversion by variable temperature measurements. The photophysics of these molecules is mediated by a diradical excited state with a twisted structure that habilitates rapid intersystem crossing. Moreover, when codissolved with an electron acceptor compound such as PCBM, direct anthanthrene to PCBM electron transfer and back-electron transfer are also observed, resulting in the formation of charged states and, then, a raise in the population of the excited state triplet manifold upon charge recombination. Some of these properties have been interpreted with the help of quantum chemical calculations. The existence of an equilibrium between folded and twisted states upon electrochemical and photoexcitation stimuli represents a novelty in comparison with existing literature on compounds also showing dynamic electrochemical properties.
PB RSC
YR 2025
FD 2025-01
LK https://hdl.handle.net/10630/37305
UL https://hdl.handle.net/10630/37305
LA eng
NO Cárdenas Valdivia, A., Lirette, F., Marín-Beloqui, J. M., Carreras, A., Casanova, D., Boismenu-Lavoie, J., Morin, J.-F., & Casado, J. (2024). Folded-twisted mechanisms control dynamic redox properties, photophysics and electron transfer of anthanthrene-quinodimethanes. Chemical Science (Cambridge), 16(4), 1925–1931. https://doi.org/10.1039/d4sc06442a
NO Financial support by the MCIN/AEI of Spain (projects PID2021-127127NB-I00, PID2022-136231NB-I00 and RED2022-134939-T –Red de Fotovoltaica), and the Junta de Andaluc´ıa (PROYEXCEL-0328) are acknowledged. We also thank the Research Central Services (SCAI) and Supercomputing and Bioinnovation Center (SCBI) of the University of Málaga. J. M. M. B. wants to acknowledge the Spanish University Ministry and the European Union for his Maria Zambrano fellowship with NextGen-EU funding.Funding for open access charge: Universidad de Málaga
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 20 ene 2026