Photosensitization of TiO2 colloids by Erythrosin B in acetonitrile |
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| Authors: | Prashant V Kamat Marye Anne Fox |
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| Institution: | Department of Chemistry, University of Texas at Austin, Austin, Texas 78712, USA |
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| Abstract: | Photosensitization by Erythrosin B of a TiO2 colloidal dispersion in acetonitrile has been studied by fast kinetic spectroscopy. The dye molecules adsorbed on the TiO2 surface had a significantly shorter lifetime (2̃ 250 ps) compared to those in homogeneous solution (≈ 1.6 ns) in acetonitrile. The photosensitization of TiO2 occurred more efficiently from the singlet than from the triplet state of the dye. |
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