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Structural study of adsorption of isonicotinic acid and related molecules on rutile TiO2(110) II: XPS

Schnadt, J; O'Shea, JN; Patthey, L; Schiessling, J; Krempasky, J; Shi, M; Mårtensson, Nils LU and Bruhwiler, PA (2003) In Surface Science 544(1). p.74-86
Abstract
The adsorption of monolayers of the pyridine-carboxylic acid monomers (isonicotinic acid, nicotinic acid, and picolinic acid) on rutile TiO2(1 1 0) has been studied by means of X-ray photoemission spectroscopy. An investigation of the O 1s spectra shows that the molecular carboxylic groups are deprotonated and, hence, that the molecules bind to the surface in a bidentate mode. Moreover, the binding energy of those core levels that are related to the pyridine ring atoms shift as a function of molecule relative to the substrate O 1s and Ti 3p levels, while the position of the core levels related to emission from the carboxylic group are constant relative to the substrate levels. The molecule-dependent shifts are attributed to local... (More)
The adsorption of monolayers of the pyridine-carboxylic acid monomers (isonicotinic acid, nicotinic acid, and picolinic acid) on rutile TiO2(1 1 0) has been studied by means of X-ray photoemission spectroscopy. An investigation of the O 1s spectra shows that the molecular carboxylic groups are deprotonated and, hence, that the molecules bind to the surface in a bidentate mode. Moreover, the binding energy of those core levels that are related to the pyridine ring atoms shift as a function of molecule relative to the substrate O 1s and Ti 3p levels, while the position of the core levels related to emission from the carboxylic group are constant relative to the substrate levels. The molecule-dependent shifts are attributed to local intermolecular interactions that determine the proximity of adjacent molecular rings and thus the core-hole screening response of the neighbouring molecules. We propose a simple molecular arrangement for each case which satisfies the known constraints. (C) 2003 Elsevier B.V. All rights reserved. (Less)
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author
organization
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type
Contribution to journal
publication status
published
subject
keywords
evaporation and sublimation, synchrotron radiation photoelectron spectroscopy, chemisorption, aromatics, titanium oxide, single crystal, surfaces
in
Surface Science
volume
544
issue
1
pages
74 - 86
publisher
Elsevier
external identifiers
  • wos:000185804200010
  • scopus:0141865567
ISSN
0039-6028
DOI
10.1016/j.susc.2003.08.013
language
English
LU publication?
yes
id
94a15946-62cd-4b7b-a909-bfcad40421de (old id 298561)
date added to LUP
2007-09-21 11:17:11
date last changed
2018-01-07 09:07:27
@article{94a15946-62cd-4b7b-a909-bfcad40421de,
  abstract     = {The adsorption of monolayers of the pyridine-carboxylic acid monomers (isonicotinic acid, nicotinic acid, and picolinic acid) on rutile TiO2(1 1 0) has been studied by means of X-ray photoemission spectroscopy. An investigation of the O 1s spectra shows that the molecular carboxylic groups are deprotonated and, hence, that the molecules bind to the surface in a bidentate mode. Moreover, the binding energy of those core levels that are related to the pyridine ring atoms shift as a function of molecule relative to the substrate O 1s and Ti 3p levels, while the position of the core levels related to emission from the carboxylic group are constant relative to the substrate levels. The molecule-dependent shifts are attributed to local intermolecular interactions that determine the proximity of adjacent molecular rings and thus the core-hole screening response of the neighbouring molecules. We propose a simple molecular arrangement for each case which satisfies the known constraints. (C) 2003 Elsevier B.V. All rights reserved.},
  author       = {Schnadt, J and O'Shea, JN and Patthey, L and Schiessling, J and Krempasky, J and Shi, M and Mårtensson, Nils and Bruhwiler, PA},
  issn         = {0039-6028},
  keyword      = {evaporation and sublimation,synchrotron radiation photoelectron spectroscopy,chemisorption,aromatics,titanium oxide,single crystal,surfaces},
  language     = {eng},
  number       = {1},
  pages        = {74--86},
  publisher    = {Elsevier},
  series       = {Surface Science},
  title        = {Structural study of adsorption of isonicotinic acid and related molecules on rutile TiO2(110) II: XPS},
  url          = {http://dx.doi.org/10.1016/j.susc.2003.08.013},
  volume       = {544},
  year         = {2003},
}