Abstract
This report describes studies of the relationships between the structures of organic monolayers and their molecular-scale frictional properties. Several distinct self-assembled monolayers (SAMs) were formed by the adsorption of a series of spiroalkanedithiols and a single structurally related normal alkanethiol. Measurements of hexadecane wettability, infrared vibrational spectroscopy, and X-ray photoelectron spectroscopy revealed that the films possessed a wide range of interfacial structures and conformational orders. Atomic force microscopy was used to measure the frictional properties of the well-characterized SAMs on the molecular scale. Comparison of the frictional data with structural information derived from complementary analytical techniques revealed a high correlation between the conformational order of the films and the observed frictional response.
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Perry, S.S., Lee, S., Shon, YS. et al. The relationships between interfacial friction and the conformational order of organic thin films. Tribology Letters 10, 81–87 (2001). https://doi.org/10.1023/A:1009022211823
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DOI: https://doi.org/10.1023/A:1009022211823