| Autor: |
Miller, Stephen A., West, Brantley A., Curtis, Anna C., Papanikolas, John M., Moran, Andrew M. |
| Předmět: |
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| Zdroj: |
Journal of Chemical Physics; 8/28/2011, Vol. 135 Issue 8, p081101, 4p |
| Abstrakt: |
Femtosecond transient grating experiments are used to investigate electronic structures and transport mechanisms in dye-sensitized nanocrystalline TiO2 films. This study examines two molecular sensitizers spanning the weak (a phosphonated Ruthenium complex) and strong (catechol) molecule-TiO2 coupling regimes. It is shown that strong molecule-TiO2 interactions give rise to photoinduced vibrational coherences at the interface between species. We suggest that the amplitudes of these coherences reflect the molecule-TiO2 coupling strength and signify the delocalization of excited state wavefunctions. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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