Adsorption of dopamine on rutile TiO2 (110) : a photoemission and near-edge X-ray absorption fine structure study

Synchrotron radiation photoelectron spectroscopy and near-edge X-ray absorption fine structure (NEXAFS) techniques have been used to study the adsorption of dopamine on a rutile TiO2 (110) single crystal. Photoemission results suggest that dopamine bonds through the oxygen molecules in a bidentate f...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1999. - 30(2014), 29 vom: 29. Juli, Seite 8761-9
1. Verfasser: Jackman, Mark J (VerfasserIn)
Weitere Verfasser: Syres, Karen L, Cant, David J H, Hardman, Samantha J O, Thomas, Andrew G
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2014
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article Research Support, Non-U.S. Gov't titanium dioxide 15FIX9V2JP Carbon 7440-44-0 Titanium D1JT611TNE Oxygen S88TT14065 mehr... Dopamine VTD58H1Z2X
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520 |a Synchrotron radiation photoelectron spectroscopy and near-edge X-ray absorption fine structure (NEXAFS) techniques have been used to study the adsorption of dopamine on a rutile TiO2 (110) single crystal. Photoemission results suggest that dopamine bonds through the oxygen molecules in a bidentate fashion. From the data, it is ambiguous whether the oxygens bond to the same 5-fold coordinated surface titanium atom or bridges across two, although based on the bonding of pyrocatechol on rutile TiO2 (110), it is likely that the dopamine bridges two titanium atoms. Using the searchlight effect, the carbon K-edge near-edge X-ray absorption fine structure NEXAFS spectra recorded for dopamine on rutile TiO2 (110) show the phenyl ring to be oriented at 78° ± 5° from the surface and twisted 11 ± 10° relative to the (001) direction 
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700 1 |a Syres, Karen L  |e verfasserin  |4 aut 
700 1 |a Cant, David J H  |e verfasserin  |4 aut 
700 1 |a Hardman, Samantha J O  |e verfasserin  |4 aut 
700 1 |a Thomas, Andrew G  |e verfasserin  |4 aut 
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