A coloured charge-transfer complex formed by adsorption of Fe(CN)64– at the surface of TiO2 particles and electrodes upon photoexcitation injects electrons into the conduction band of this semiconductor with a quantum yield of at least 37%.
E. Vrachnou, N. Vlachopoulos and M. Grätzel, J. Chem. Soc., Chem. Commun., 1987, 868 DOI: 10.1039/C39870000868
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