English, Article edition: CHEMISORPTION OF L-CYSTEINE ON Au(111)/Si(111) AND $Si(111)\sqrt{3} \times \sqrt{3}-{\rm Au}$ SURFACES MITSUNORI HONDA; FUMIHIKO MATSUI; HIROSHI DAIMON

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Bookmark: http://trove.nla.gov.au/version/84505
Physical Description
  • article
Language
  • English

Edition details

Title
  • CHEMISORPTION OF L-CYSTEINE ON Au(111)/​Si(111) AND $Si(111)\sqrt{3} \times \sqrt{3}-{\rm Au}$ SURFACES
Author
  • MITSUNORI HONDA
  • FUMIHIKO MATSUI
  • HIROSHI DAIMON
Physical Description
  • article
Notes
  • The electronic structures of L-cysteine adsorbed on Au(111)/​Si(111) and $Si(111)\sqrt{3} \times \sqrt{3}-{\rm Au}$ surfaces were studied by using X-ray photoelectron spectroscopy (XPS). L-cysteine multilayers on Au(111)/​Si(111) and $Si(111)\sqrt{3} \times \sqrt{3}-{\rm Au}$ surfaces were prepared under UHV condition. L-cysteine monolayers were obtained by annealing such multilayer sample up to 130°C. In the case of the Au(111)/​Si(111) surface, we observed no chemical shift and no change in the peak intensity ratios among C1s, N1s, O1s and S 2p before and after annealing. On the other hand, the component attributed to COOH group in C1s spectra decreased after annealing. In addition, O1s XPS spectra of monolayer on the $Si(111)\sqrt{3} \times \sqrt{3}-{\rm Au}$ surface was composed of two distinct peaks, which indicates that there are two kinds of O atoms in different conformations. These observations indicate that the COOH group adsorbs directly to a surface atoms and dissociate by the interaction with the substrate Si(111) trimer atoms.
  • L-cysteine, Au(111)/​Si(111), $Si(111)\sqrt{3} \times \sqrt{3}-{\rm Au}$, XPS, semiconductor
  • RePEc:wsi:srlxxx:v:13:y:2006:i:02:p:197-200
Language
  • English
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