Structural studies of adsorbed alkanethiols on Cu(111) by use of S and C K-edge X-ray absorption fine structures

A. Imanishi, K. Isawa, F. Matsui, T. Tsuduki, T. Yokoyama, Hiroshi Kondoh, Y. Kitajima, T. Ohta

Research output: Contribution to journalArticle

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Abstract

Surface structures of submonolayer alkanethiol CH3(CH2)n-1SH (n = 6,12) adsorbed on Cu(111) at room temperature (0.3 ML) were investigated by means of S K-edge surface extended X-ray absorption fine structure (EXAFS) and S, C K-edge near-edge X-ray absorption fine structure (NEXAFS) spectroscopies. Polarization dependence of the C K-edge NEXAFS spectra revealed that alkanethiol molecules adsorb with the tilt angle of 12 ± 10° from the surface normal. The S K-edge surface EXAFS determined that the S-Cu distance is 2.31 ± 0.02 Å and that the S atoms locate at a deep three-fold hollow site with significant lateral outward movements of the nearest neighbor Cu atoms.

Original languageEnglish
Pages (from-to)282-292
Number of pages11
JournalSurface Science
Volume407
Issue number1-3
Publication statusPublished - 1998 Jun 10
Externally publishedYes

Fingerprint

X ray absorption
fine structure
X ray absorption near edge structure spectroscopy
Atoms
x rays
Surface structure
Polarization
Molecules
atoms
hollow
Temperature
room temperature
polarization
spectroscopy
molecules

Keywords

  • Alkanethiol
  • CH(CH)SH
  • CH(CH)SH
  • Cu(111)
  • NEXAFS
  • Surface NEXAFS

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Condensed Matter Physics
  • Surfaces and Interfaces

Cite this

Imanishi, A., Isawa, K., Matsui, F., Tsuduki, T., Yokoyama, T., Kondoh, H., ... Ohta, T. (1998). Structural studies of adsorbed alkanethiols on Cu(111) by use of S and C K-edge X-ray absorption fine structures. Surface Science, 407(1-3), 282-292.

Structural studies of adsorbed alkanethiols on Cu(111) by use of S and C K-edge X-ray absorption fine structures. / Imanishi, A.; Isawa, K.; Matsui, F.; Tsuduki, T.; Yokoyama, T.; Kondoh, Hiroshi; Kitajima, Y.; Ohta, T.

In: Surface Science, Vol. 407, No. 1-3, 10.06.1998, p. 282-292.

Research output: Contribution to journalArticle

Imanishi, A, Isawa, K, Matsui, F, Tsuduki, T, Yokoyama, T, Kondoh, H, Kitajima, Y & Ohta, T 1998, 'Structural studies of adsorbed alkanethiols on Cu(111) by use of S and C K-edge X-ray absorption fine structures', Surface Science, vol. 407, no. 1-3, pp. 282-292.
Imanishi A, Isawa K, Matsui F, Tsuduki T, Yokoyama T, Kondoh H et al. Structural studies of adsorbed alkanethiols on Cu(111) by use of S and C K-edge X-ray absorption fine structures. Surface Science. 1998 Jun 10;407(1-3):282-292.
Imanishi, A. ; Isawa, K. ; Matsui, F. ; Tsuduki, T. ; Yokoyama, T. ; Kondoh, Hiroshi ; Kitajima, Y. ; Ohta, T. / Structural studies of adsorbed alkanethiols on Cu(111) by use of S and C K-edge X-ray absorption fine structures. In: Surface Science. 1998 ; Vol. 407, No. 1-3. pp. 282-292.
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AB - Surface structures of submonolayer alkanethiol CH3(CH2)n-1SH (n = 6,12) adsorbed on Cu(111) at room temperature (0.3 ML) were investigated by means of S K-edge surface extended X-ray absorption fine structure (EXAFS) and S, C K-edge near-edge X-ray absorption fine structure (NEXAFS) spectroscopies. Polarization dependence of the C K-edge NEXAFS spectra revealed that alkanethiol molecules adsorb with the tilt angle of 12 ± 10° from the surface normal. The S K-edge surface EXAFS determined that the S-Cu distance is 2.31 ± 0.02 Å and that the S atoms locate at a deep three-fold hollow site with significant lateral outward movements of the nearest neighbor Cu atoms.

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