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

doi:10.1021/la047980b

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 journal › Article › peer-review

67 Scopus citations

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 language	English
Pages (from-to)	11022-11029
Number of pages	8
Journal	Langmuir
Volume	20
Issue number	25
DOIs	https://doi.org/10.1021/la047980b
State	Published - 7 Dec 2004
Externally published	Yes

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AU - Zubavichus, Yan

AU - Zharnikov, Michael

AU - Yang, Yongjie

AU - Fuchs, Oliver

AU - Umbach, Eberhard

AU - Heske, Clemens

AU - Ulman, Abraham

AU - Grunze, Michael

PY - 2004/12/7

Y1 - 2004/12/7

N2 - 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.

AB - 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.

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

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