Excited-state charge transfer dynamics in systems of aromatic adsorbates on TiO2 studied with resonant core techniques
- 15 December 2003
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 119 (23), 12462-12472
- https://doi.org/10.1063/1.1586692
Abstract
Resonant core spectroscopies are applied to a study of the excited electron transfer dynamics on a low-femtosecond time scale in systems of aromatic molecules (isonicotinic acid and bi-isonicotinic acid) adsorbed on a rutile TiO 2 (110) semiconductor surface. Depending on which adsorbate state is excited, the electron is either localized on the adsorbate in an excitonic effect, or delocalizes rapidly into the substrate in less than 5 fs (3 fs) for isonicotinic acid (bi-isonicotinic acid). The results are obtained by the application of a variant of resonant photoemission spectroscopy.Keywords
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