Structure of CH3(CH2)17SH Self-Assembled on the Ag(111) Surface: An Incommensurate Monolayer

P. Fenter, P. Eisenberger, Jun Li, N. Camillone, S. Bernasek, G. Scoles, T. A. Ramanarayanan, K. S. Liang

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188 Scopus citations


We describe the first experimental study of the molecular structure of the self-assembled monolayer of CH3(CH2)17SH formed on the Ag(111) surface. Using both low-energy He diffraction and grazing incidence X-ray diffraction, we show that the monolayer formed on Ag is both incommensurate and rotated with respect to the Ag lattice, with a lattice spacing which is very similar to n-alkane chains in bulk hydrocarbon crystals. Lastly, by comparing the results of the X-ray and He diffraction experiments on the same sample, we observe that the outermost surface of the monolayer is less ordered than the interior.

Original languageEnglish (US)
Pages (from-to)2013-2016
Number of pages4
Issue number10
StatePublished - Oct 1 1991
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry


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