Excited-state structural conformations of Fe-amido photosensitizers revealed by picosecond X-ray absorption spectroscopy
Ultrafast X-ray spectroscopy and modelling were used to characterize distortions in the photo-generated quintet state of Fe sensitizers bearing hybrid N-heterocycle/amido ligands. Photoexcitation induces a 0.10-0.35 Å Fe-N elongation that is smaller for <i>d</i>(Fe-N<sub>amido</sub>) compared to <i>d</i>(Fe-N<sub>heterocycle</sub>), suggesting that the partial expansion of the Fe-N bonds involving the N-heterocyclic ligands is critical to the rapid population of ligand-field states.
Authors
- Ana Martı́nez (ORCID: https://orcid.org/0000-0002-0515-1946)
- Maxime Sauvan (ORCID: https://orcid.org/0000-0002-4428-4629)
- Dooshaye Moonshiram (ORCID: https://orcid.org/0000-0002-9075-3035)
- David E. Herbert (ORCID: https://orcid.org/0000-0001-8190-2468)
- Issiah B. Lozada (ORCID: https://orcid.org/0000-0002-1689-2918)
- Asterios Charisiadis (ORCID: https://orcid.org/0000-0001-9477-2631)
- Lucía Velasco (ORCID: https://orcid.org/0000-0002-8633-8541)
- Xiaoyi Zhang (ORCID: https://orcid.org/0000-0001-9732-1449)
Institutions
- Universidad Complutense de Madrid (ES)
- Argonne National Laboratory (US)
- Instituto de Ciencia de Materiales de Madrid (ES)
- University of Manitoba (CA)
Publication Details
- Journal
- Chemical Communications
- Published
- 2025-11-04
- DOI
- https://doi.org/10.1039/d5cc05315c
- Primary Topic
- Metal-Catalyzed Oxygenation Mechanisms
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- U.S. Department of Energy
- Natural Sciences and Engineering Research Council of Canada