Self-Assembly of a Pyridine-Terminated Thiol Monolayer on Au(111)

C. Silien; Manfred Buck; G. Goretzki; D. Lahayee; N.R. Champness; T. Weidner; M. Zharnikov

doi:10.1021/la802966s

Self-Assembly of a Pyridine-Terminated Thiol Monolayer on Au(111)

C. Silien, Manfred Buck, G. Goretzki, D. Lahayee, N.R. Champness, T. Weidner, M. Zharnikov

Research output: Contribution to journal › Article › peer-review

Abstract

Self-assembled monolayers (SAMs) of 3-(4-pyridine-4-yl-phenyl)-propane-1-thiol (PyP3) on Au(111)/mica have been studied by scanning tunneling microscopy (STM), polarization-modulated infrared reflection absorption spectroscopy (PM-IRRAS), high-resolution X-ray photoemission spectroscopy (HRXPS), and near-edge X-ray absorption fine structure (NEXAFS) spectroscopy. The quality of the SAM is found to be strongly dependent on the solvent. Substantial gold corrosion is observed if pure ethanol is used. In contrast, highly ordered and densely packed SAMs are formed from acetonitrile or a KOH/ethanol mixture. The structure is described by a 2 root 3 x root 3 unit. cell with the aromatic moiety oriented nearly perpendicular to the surface. The PyP3 films form with the pyridine moiety deprotonated. Variation of pH allows reversible protonation without measurable damage of the SAM.

Original language	English
Pages (from-to)	959-967
Journal	Langmuir
Volume	25
Issue number	2
DOIs	https://doi.org/10.1021/la802966s
Publication status	Published - 20 Jan 2009

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10.1021/la802966s

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title = "Self-Assembly of a Pyridine-Terminated Thiol Monolayer on Au(111)",

abstract = "Self-assembled monolayers (SAMs) of 3-(4-pyridine-4-yl-phenyl)-propane-1-thiol (PyP3) on Au(111)/mica have been studied by scanning tunneling microscopy (STM), polarization-modulated infrared reflection absorption spectroscopy (PM-IRRAS), high-resolution X-ray photoemission spectroscopy (HRXPS), and near-edge X-ray absorption fine structure (NEXAFS) spectroscopy. The quality of the SAM is found to be strongly dependent on the solvent. Substantial gold corrosion is observed if pure ethanol is used. In contrast, highly ordered and densely packed SAMs are formed from acetonitrile or a KOH/ethanol mixture. The structure is described by a 2 root 3 x root 3 unit. cell with the aromatic moiety oriented nearly perpendicular to the surface. The PyP3 films form with the pyridine moiety deprotonated. Variation of pH allows reversible protonation without measurable damage of the SAM. ",

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T1 - Self-Assembly of a Pyridine-Terminated Thiol Monolayer on Au(111)

AU - Silien, C.

AU - Buck, Manfred

AU - Goretzki, G.

AU - Lahayee, D.

AU - Champness, N.R.

AU - Weidner, T.

AU - Zharnikov, M.

PY - 2009/1/20

Y1 - 2009/1/20

N2 - Self-assembled monolayers (SAMs) of 3-(4-pyridine-4-yl-phenyl)-propane-1-thiol (PyP3) on Au(111)/mica have been studied by scanning tunneling microscopy (STM), polarization-modulated infrared reflection absorption spectroscopy (PM-IRRAS), high-resolution X-ray photoemission spectroscopy (HRXPS), and near-edge X-ray absorption fine structure (NEXAFS) spectroscopy. The quality of the SAM is found to be strongly dependent on the solvent. Substantial gold corrosion is observed if pure ethanol is used. In contrast, highly ordered and densely packed SAMs are formed from acetonitrile or a KOH/ethanol mixture. The structure is described by a 2 root 3 x root 3 unit. cell with the aromatic moiety oriented nearly perpendicular to the surface. The PyP3 films form with the pyridine moiety deprotonated. Variation of pH allows reversible protonation without measurable damage of the SAM.

AB - Self-assembled monolayers (SAMs) of 3-(4-pyridine-4-yl-phenyl)-propane-1-thiol (PyP3) on Au(111)/mica have been studied by scanning tunneling microscopy (STM), polarization-modulated infrared reflection absorption spectroscopy (PM-IRRAS), high-resolution X-ray photoemission spectroscopy (HRXPS), and near-edge X-ray absorption fine structure (NEXAFS) spectroscopy. The quality of the SAM is found to be strongly dependent on the solvent. Substantial gold corrosion is observed if pure ethanol is used. In contrast, highly ordered and densely packed SAMs are formed from acetonitrile or a KOH/ethanol mixture. The structure is described by a 2 root 3 x root 3 unit. cell with the aromatic moiety oriented nearly perpendicular to the surface. The PyP3 films form with the pyridine moiety deprotonated. Variation of pH allows reversible protonation without measurable damage of the SAM.

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EP - 967

JO - Langmuir

JF - Langmuir

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ER -

Self-Assembly of a Pyridine-Terminated Thiol Monolayer on Au(111)

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Micro-and Nanoelectrode structure: Micro and nanoelectrode structures by template directed electrodeposition

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Self-Assembly of a Pyridine-Terminated Thiol Monolayer on Au(111)

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Micro-and Nanoelectrode structure: Micro and nanoelectrode structures by template directed electrodeposition

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