The adsorption of dopamine onto an anatase TiO2(101) single crystal has been studied using photoemission and NEXAFS techniques Photoemission Jesuits suggest that the dopamine molecule adsorbs on the surface in a bidentate geometry, resulting in the removal of band gap states in the To, valence band Using the searchlight effect, carbon K-edge NEXAFS spectra indicate that the phenyl rings in the dopamine molecules are orientated normal to the surface A combination of experimental and computational results indicates the appearance of new unoccupied states arising following adsorption The possible role of these states in the charge-transfer mechanism of the dopamine-TiO2 system is discussed
Type
research article
Web of Science ID
WOS:000281690600027
Authors
Publication date
2010
Publisher
Published in
Volume
26
Start page
14548
End page
14555
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
June 8, 2011
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