RT Journal Article
T1 Dibenzoquinone cyclopentadithiophene diradicaloids show optical transitions of different spin states and anomalous near-infrared emission
A1 Privado, María
A1 Moles Quintero, Sergio
A1 Barrejón, Myriam
A1 De-la-Cruz, Pilar
A1 Janaarthana Babu, P.M.
A1 Casanova, David
A1 Langa, Fernando
A1 Casado-Cordón, Juan
K1 Reactividad (Química)
K1 Radicales (Química)
AB We have prepared a series of bis(semiquinone) compounds with dithiophene bridges of different length that evolve from closed-shell (smaller compound) to full diradical (longer compound) for which the narrow singlet-triplet energy gap allows the triplet population at 298 K. The medium size system has a variety of photonic properties with absorptions and emission in the optical near-infrared region mediated by a unique case of anti-Kasha emission. A whole set of optical absorption/emission and vibrational steady state spectroscopies as well as picosecond transient absorption spectroscopy, all complemented with spectroelectrochemistry and theoretical calculations, is presented.
PB Wiley
YR 2024
FD 2024
LK https://hdl.handle.net/10630/36654
UL https://hdl.handle.net/10630/36654
LA eng
NO M. Privado, S. Moles Quintero, M. Barrejón, P. de La Cruz, J. B. P. M., D. Casanova, F. Langa, J. Casado, Angew. Chem. Int. Ed. 2025, 64, e202413988. https://doi.org/10.1002/anie.202413988
NO Financial support by the MCIN/AEI of Spain (projects PID2021-127127NB-I00, PID2022-141687OB-I00, PID2022-136231NB-I00 and RED2022-134939-T—Red de Fotovoltaica—, the Junta de Comunidades de Castilla-La Mancha and European Social Funds (SBPLY/21/180501/000142), the Junta de Andalucía (PROYEXCEL-0328) and the Eusko Jaularitza (project PIBA23-1-0055) are acknowledged. We also thank the Research Central Services (SCAI) and Supercomputing and Bioinnovation Center (SCBI) of the University of Málaga.Funding for open access charge: Universidad de Málaga / CBUA
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 16 abr 2026