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  Stabilizing Gold Adatoms by Thiophenyl Derivatives: A Possible Route toward Metal Redispersion

Yang, B., Pan, Y., Lin, X., Nilius, N., Freund, H.-J., Hulot, C., et al. (2012). Stabilizing Gold Adatoms by Thiophenyl Derivatives: A Possible Route toward Metal Redispersion. Journal of the American Chemical Society, 134(27), 11161-11167. doi:10.1021/ja300304s.

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 Creators:
Yang, Bing1, Author           
Pan, Yi1, Author           
Lin, Xiao1, Author           
Nilius, Niklas1, Author           
Freund, Hans-Joachim1, Author           
Hulot, Catherine2, Author
Giraud, Anne2, Author
Blechert, Siegfried2, Author
Tosoni, Sergio3, Author
Sauer, Joachim3, Author
Affiliations:
1Chemical Physics, Fritz Haber Institute, Max Planck Society, ou_24022              
2Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 135, D-10623 Berlin, Germany, ou_persistent22              
3Institut für Chemie, Humboldt Universität zu Berlin, Brook-Taylor-Straße 2, D-12489 Berlin, Germany, ou_persistent22              

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 Abstract: Tris(phenylthio)benzene molecules have been synthesized in order to explore their ability to trap single Au adatoms on an Au(111) surface. The resulting metal–organic complexes have been characterized with low-temperature scanning tunneling microscopy and infrared reflection absorption spectroscopy; possible structure models have been derived from density functional calculations. Upon room temperature deposition, the thiophenyl derivatives form dimer structures, comprising two molecules and six Au adatoms. Below 100 K, isolated molecules are found as well that have trapped up to six Au atoms. On the basis of the experimental results and calculated formation energies of the complexes, we discuss potential applications of the thioethers for the redispersion of metals on a catalyst surface. First experiments performed on Au particle ensembles prepared on alumina thin films suggest that the molecular ligands are indeed able to change the distribution of gold on the oxide surface.

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Language(s): eng - English
 Dates: 2012-01-112012-03-132012-03-302012-07-11
 Publication Status: Issued
 Pages: 7
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1021/ja300304s
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Title: Journal of the American Chemical Society
  Other : J. Am. Chem. Soc.
Source Genre: Journal
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Publ. Info: American Chemical Society
Pages: - Volume / Issue: 134 (27) Sequence Number: - Start / End Page: 11161 - 11167 Identifier: ISSN: 0002-7863
CoNE: https://pure.mpg.de/cone/journals/resource/954925376870