期刊
CHEMICAL SCIENCE
卷 9, 期 17, 页码 4152-4159出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7sc04348a
关键词
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资金
- Fonds der Chemischen Industrie
- French National Research Agency (Labex Program, ARCANE) [ANR-11-LABX-0003-01]
- CEA DRF Impulsion Program (Project Light-Acc-Cat)
Increasing the efficiency of molecular artificial photosynthetic systems is mandatory for the construction of functional devices for solar fuel production. Decoupling the Eight-induced charge separation steps from the catalytic process is a promising strategy, which can be achieved thanks to the introduction of suitable electron relay units performing charge accumulation. We report here on a novel ruthenium tris-diimine complex able to temporarily store two electrons on a fused dipyridophenazine-pyridoquinolinone pi-extended ligand upon visible-light irradiation in the presence of a sacrificial electron donor. Full characterization of this compound and of its singly and doubly reduced derivatives thanks to resonance Raman, EPR and (TD)DFT studies allowed us to localize the two electron-storage sites and to relate charge photoaccumulation with proton-coupled electron transfer processes.
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