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Ref1: Antenna Effect in Noble Metal-Free Dye-Sensitized Photocatalytic Systems Enhances CO2-to-CO Conversion Ref2: Controlling Symmetry-Breaking Charge Separation in Pyrene Bichromophores Ref3: Dye-Sensitized Photocatalysis: Hydrogen Evolution and Alcohol-to-Aldehyde Oxidation without Sacrifical Electron Donor Ref4: Excited-State Symmetry Breaking in Solvent Mixtures Ref5: Photoinduced Electron Transfer between Dipolar Reactants: Solvent and Excitation Wavelength Effects Ref6: Bimolecular Photoinduced Symmetry-Breaking Charge Separation of Perylene in Solution Ref7: Coupling to octahedral tilts in halide perovskite nanocrystals induces phonon-mediated attractive interactions between excitons Ref8: Excited-state symmetry breaking in quadrupolar pull-push-pull molecules: dicyanovinyl vs. cyanophenyl acceptors Ref9: Torsional Disorder, Symmetry Breaking, and the Crystal Violet Shoulder Controversy Ref10: Looking for chiral recognition in photoinduced bimolecular electron transfer using ultrafast spectroscopy Ref11: Experiment and theory reveal similarities and differences between porphycenes substituted at the meso position with amino and nitro groups Ref12: Torsional disorder and planarization dynamics: 9,10-bis(phenylethynyl)anthracene as a case study Ref13: Photoinduced Electron Transfer in a Porphyrin-Fullerene Dyad at a Liquid Interface Ref14: Beyond the Threshold: A Study of Chalcogenophene-Based Two-Photon Initiators Ref15: Watching Excited-State Symmetry Breaking in Multibranched Push-Pull Molecules    Parcourir les références
Antenna Effect in Noble Metal-Free Dye-Sensitized Photocatalytic Systems Enhances CO2-to-CO Conversion
V. Nikolaou, C. Govind, E. Balanikas, J. Bharti, S. Diring, E. Vauthey, M. Robert and F. Odobel
ref1687

Dye-sensitized photocatalytic systems (DSPs) have been extensively investigated for solar-driven hydrogen (H2) evolution. However, their application in carbon dioxide (CO2) reduction remains limited. Furthermore, current solar-driven CO2-to-CO DSPs typically employ rhenium complexes as catalysts. In this study, we have developed DSPs that incorporate noble metal-free components, specifically a zinc-porphyrin as photosensitizer (PS) and a cobalt-quaterpyridine as catalyst (CAT). Taking a significant stride forward, we have achieved an antenna effect for the first time in CO2-to-CO DSPs by introducing a Bodipy as an additional chromophore to enhance light harvesting efficiency. The energy transfer from Bodipy to zinc porphyrin resulted in remarkable stability (turn over number (TON)=759 vs. CAT), and high CO evolution activity (42?mmol?g?1?h?1 vs. CAT).

Angewandte Chemie International Edition, 63 , 2024 , p202318299

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