X-ray photoelectron spectroscopy and near-edge X-ray absorption fine structure study of water adsorption on pyridine-terminated thiolate self-assembled monolayers

Yan Zubavichus, Michael Zharnikov, Yongjie Yang, Oliver Fuchs, Eberhard Umbach, Clemens Heske, Abraham Ulman, Michael Grunze

Research output: Contribution to journalArticle

Abstract

Adsorption of water on self-assembled monolayers (SAMs) of 4-(4-mercaptophenyl)pyridine on gold at low temperatures under ultrahigh vacuum conditions is studied by synchrotron radiation X-ray photoelectron and absorption spectroscopy. Water adsorption induces a strong modification of the chemical state of the pyridine N atoms at the SAM/ice interface, indicative for strong H bonding and partial proton transfer between water molecules and pyridine moieties. Additionally, the initial molecular orientation within the SAM is changed upon formation of an adsorbed water multilayer.

Original languageEnglish (US)
Pages (from-to)11022-11029
Number of pages8
JournalLangmuir
Volume20
Issue number25
DOIs
StatePublished - Dec 7 2004

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ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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