Tribological properties of self-assembled monolayers of fluorocarbon and hydrocarbon thiols and disulfides on Au(111) studied by scanning force microscopy

Gyula J. Vancso; Holger Schönherr

doi:10.1016/S0928-4931(99)00041-7

Tribological properties of self-assembled monolayers of fluorocarbon and hydrocarbon thiols and disulfides on Au(111) studied by scanning force microscopy

Gyula J. Vancso, Holger Schönherr

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

33 Citations (Scopus)

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Abstract

The tribological properties of highly ordered self-assembled monolayers (SAMs) of fluorocarbon and hydrocarbon thiols and disulfides formed on triangular Au(111) terraces were studied by scanning force microscopy (SFM). Molecular resolution SFM images proved the high degree of lateral order in the films. The magnitude of friction between Si3N4 tips and the monolayers measured by SFM was related to the order of the alkane chains. The disorder of the hydrocarbon chains in SAMs of mixed hydrocarbon–fluorocarbon disulfides, or short chain hydrocarbon disulfides, was determined by Fourier transfrom infrared (FTIR) spectroscopy. Conformational and structural disorder was found to correlate with a significant increase in the magnitude of friction. The correlation between disorder (transition from ‘solid-like' to ‘amorphous-like' monolayers) and increase in observed friction force can be interpreted based on models by Yoshizawa et al. [H. Yoshizawa, Y.-L. Chen, J. Israelachvili, J. Phys. Chem. 97 (1993) 4128].

Original language	Undefined
Pages (from-to)	243-249
Number of pages	7
Journal	Materials Science and Engineering C: Biomimetic Materials, Sensors and Systems
Volume	8-9
Issue number	8-9
DOIs	https://doi.org/10.1016/S0928-4931(99)00041-7
Publication status	Published - 1999

Keywords

METIS-105749
Self-assembled monolayers
Scanning force microscopy
Friction
IR-74165

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10.1016/S0928-4931(99)00041-7

Cite this

@article{e06d857459d144e2b806840ccf03b272,

title = "Tribological properties of self-assembled monolayers of fluorocarbon and hydrocarbon thiols and disulfides on Au(111) studied by scanning force microscopy",

abstract = "The tribological properties of highly ordered self-assembled monolayers (SAMs) of fluorocarbon and hydrocarbon thiols and disulfides formed on triangular Au(111) terraces were studied by scanning force microscopy (SFM). Molecular resolution SFM images proved the high degree of lateral order in the films. The magnitude of friction between Si3N4 tips and the monolayers measured by SFM was related to the order of the alkane chains. The disorder of the hydrocarbon chains in SAMs of mixed hydrocarbon–fluorocarbon disulfides, or short chain hydrocarbon disulfides, was determined by Fourier transfrom infrared (FTIR) spectroscopy. Conformational and structural disorder was found to correlate with a significant increase in the magnitude of friction. The correlation between disorder (transition from {\textquoteleft}solid-like' to {\textquoteleft}amorphous-like' monolayers) and increase in observed friction force can be interpreted based on models by Yoshizawa et al. [H. Yoshizawa, Y.-L. Chen, J. Israelachvili, J. Phys. Chem. 97 (1993) 4128].",

keywords = "METIS-105749, Self-assembled monolayers, Scanning force microscopy, Friction, IR-74165",

author = "Vancso, {Gyula J.} and Holger Sch{\"o}nherr",

year = "1999",

doi = "10.1016/S0928-4931(99)00041-7",

language = "Undefined",

volume = "8-9",

pages = "243--249",

journal = "Materials Science and Engineering C: Biomimetic Materials, Sensors and Systems",

issn = "0928-4931",

publisher = "Elsevier B.V.",

number = "8-9",

}

Tribological properties of self-assembled monolayers of fluorocarbon and hydrocarbon thiols and disulfides on Au(111) studied by scanning force microscopy. / Vancso, Gyula J.; Schönherr, Holger.
In: Materials Science and Engineering C: Biomimetic Materials, Sensors and Systems, Vol. 8-9, No. 8-9, 1999, p. 243-249.

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

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T1 - Tribological properties of self-assembled monolayers of fluorocarbon and hydrocarbon thiols and disulfides on Au(111) studied by scanning force microscopy

AU - Vancso, Gyula J.

AU - Schönherr, Holger

PY - 1999

Y1 - 1999

N2 - The tribological properties of highly ordered self-assembled monolayers (SAMs) of fluorocarbon and hydrocarbon thiols and disulfides formed on triangular Au(111) terraces were studied by scanning force microscopy (SFM). Molecular resolution SFM images proved the high degree of lateral order in the films. The magnitude of friction between Si3N4 tips and the monolayers measured by SFM was related to the order of the alkane chains. The disorder of the hydrocarbon chains in SAMs of mixed hydrocarbon–fluorocarbon disulfides, or short chain hydrocarbon disulfides, was determined by Fourier transfrom infrared (FTIR) spectroscopy. Conformational and structural disorder was found to correlate with a significant increase in the magnitude of friction. The correlation between disorder (transition from ‘solid-like' to ‘amorphous-like' monolayers) and increase in observed friction force can be interpreted based on models by Yoshizawa et al. [H. Yoshizawa, Y.-L. Chen, J. Israelachvili, J. Phys. Chem. 97 (1993) 4128].

AB - The tribological properties of highly ordered self-assembled monolayers (SAMs) of fluorocarbon and hydrocarbon thiols and disulfides formed on triangular Au(111) terraces were studied by scanning force microscopy (SFM). Molecular resolution SFM images proved the high degree of lateral order in the films. The magnitude of friction between Si3N4 tips and the monolayers measured by SFM was related to the order of the alkane chains. The disorder of the hydrocarbon chains in SAMs of mixed hydrocarbon–fluorocarbon disulfides, or short chain hydrocarbon disulfides, was determined by Fourier transfrom infrared (FTIR) spectroscopy. Conformational and structural disorder was found to correlate with a significant increase in the magnitude of friction. The correlation between disorder (transition from ‘solid-like' to ‘amorphous-like' monolayers) and increase in observed friction force can be interpreted based on models by Yoshizawa et al. [H. Yoshizawa, Y.-L. Chen, J. Israelachvili, J. Phys. Chem. 97 (1993) 4128].

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KW - Self-assembled monolayers

KW - Scanning force microscopy

KW - Friction

KW - IR-74165

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DO - 10.1016/S0928-4931(99)00041-7

M3 - Article

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