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- W2328640601 abstract "The interaction of Zinc(II) tetraphenyl porphyrin (ZnTPP) and pyrene with colloidal TiO 2 was studied by absorption and fluorescence spectroscopy. Upon excitation of its absorption band, the fluorescence emission of ZnTPP and pyrene was quenched by colloidal TiO 2 . The bimolecular quenching rate constant ( k q ) is 4.09 × 10 11 M −1 s −1 for ZnTPP and 2.09 × 10 9 M −1 s −1 for pyrene. ZnTPP and pyrene adsorbed on colloidal TiO 2 can participate in the sensitization process by injecting electrons from their excited states into the conduction band of TiO 2 . The mechanism is discussed on the basis of free energy change (ΔG et ) obtained from Rehm-Weller equation considering quenching rate constants and conduction band potential of colloidal TiO 2 ." @default.
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- W2328640601 date "2008-04-01" @default.
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- W2328640601 title "Photosensitization of Colloidal TiO2 with ZnTPP and Pyrene" @default.
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- W2328640601 doi "https://doi.org/10.1524/zpch.2008.5299" @default.
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