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  Adsorption of thioether molecules on an alumina thin film

Pan, Y., Nilius, N., Schneider, W.-D., & Freund, H.-J. (2014). Adsorption of thioether molecules on an alumina thin film. Surface Science, 628, 111-115. doi:10.1016/j.susc.2014.05.021.

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 Creators:
Pan, Yi1, Author           
Nilius, Niklas1, 2, Author           
Schneider, Wolf-Dieter1, 3, Author           
Freund, Hans-Joachim1, Author           
Affiliations:
1Chemical Physics, Fritz Haber Institute, Max Planck Society, ou_24022              
2Institute of Physics, Carl von Ossietzky University Oldenburg, 26111 Oldenburg, Germany, ou_persistent22              
3École Polytechnique Fédérale de Lausanne, Institute of Condensed Matter Physics, CH-1015 Lausanne, Switzerland, ou_persistent22              

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Free keywords: Molecule–oxide interactions; Scanning tunneling microscopy; Adsorption; Thioether-molecules; Aluminum oxide
 Abstract: Low-temperature scanning tunneling microscopy has been employed to study the adsorption of (bis(3-phenylthio)-phenyl)sulfane (BPPS) molecules on an aluminum-oxide film grown on NiAl(110). Large variations in the molecular coverage on incompletely oxidized samples indicate substantial differences in the binding strength of BPPS to metallic (NiAl) versus dielectric (alumina) surfaces. From atomically resolved images, we obtain possible BPPS adsorption geometries on the oxide, in which the sulfur centers and not the phenyl rings of the molecule govern the interaction. A local hexagonal ordering of BPPS, as deduced from pair correlation functions, suggests a preferential binding of the BPPS sulfur atoms to Al ions with distorted pyramidal coordination in the oxide surface. Our work provides insight into rarely explored binding schemes of organic molecules on wide-gap oxide materials.

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Language(s): eng - English
 Dates: 2014-05-282014-04-252014-05-302014-06-052014-10
 Publication Status: Issued
 Pages: 5
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1016/j.susc.2014.05.021
 Degree: -

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Title: Surface Science
  Abbreviation : Surf. Sci.
Source Genre: Journal
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Publ. Info: Amsterdam : Elsevier
Pages: - Volume / Issue: 628 Sequence Number: - Start / End Page: 111 - 115 Identifier: Other: 0039-6028
CoNE: https://pure.mpg.de/cone/journals/resource/0039-6028