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Structural study of...
Structural study of adsorption of isonicotinic acid and related molecules on rutile TiO2(110) II: XPS
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- Schnadt, J (author)
- Uppsala University
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- O'Shea, JN (author)
- University of Nottingham
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- Patthey, L (author)
- Paul Scherrer Institute
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Schiessling, J (author)
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- Krempasky, J (author)
- Paul Scherrer Institute
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- Shi, M (author)
- Paul Scherrer Institute
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- Mårtensson, Nils (author)
- Uppsala University,Lund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory
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Bruhwiler, PA (author)
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(creator_code:org_t)
- Elsevier BV, 2003
- 2003
- English.
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In: Surface Science. - : Elsevier BV. - 0039-6028. ; 544:1, s. 74-86
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http://dx.doi.org/10...
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Abstract
Subject headings
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- 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.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- evaporation and sublimation
- synchrotron radiation photoelectron spectroscopy
- chemisorption
- aromatics
- titanium oxide
- single crystal
- surfaces
Publication and Content Type
- art (subject category)
- ref (subject category)
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