Kamat, Prashant V. ; Gopidas, K. R. ; Weir, D. (1988) Photoelectrochemistry in particulate systems. Photosensitized charge injection into opaque TiO2 semiconductor powder as probed by time-resolved diffuse reflectance laser flash photolysis Chemical Physics Letters, 149 (5-6). pp. 491-496. ISSN 0009-2614
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Official URL: http://www.sciencedirect.com/science/article/pii/0...
Related URL: http://dx.doi.org/10.1016/0009-2614(88)80370-1
Abstract
Fluorescence emission of phenosafranin dye was quenched when this dye was adsorbed on TiO2 particles. Diffuse reflectance laser flash photolysis measurements have shown transient absorption corresponding to the cation radical of phenosafranin when the dye adsorbed on TiO2 was excited with a 532 nm laser pulse. The process of charge injection into TiO2 particles was further confirmed by comparing the results of the diffuse reflectance and emission experiments with those from the dye-coated silica particles. Dependence of relative efficiency of charge injection on the surface coverage of the dye has also been elucidated.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 62060 |
| Deposited On: | 16 Sep 2011 04:05 |
| Last Modified: | 16 Sep 2011 04:05 |
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