Structure-property relationships for methyl-terminated alkyl self-assembled monolayers

Published

July 20, 2011

Author(s)

Frank W. DelRio, Dave Rampulla, Cherno Jaye, Gheorghe Stan, Richard S. Gates, Daniel A. Fischer, Robert F. Cook

Abstract

Structure-property relationships for methyl-terminated alkyl self-assembled monolayers (SAMs) are developed using near-edge X-ray absorption fine structure spectroscopy (NEXAFS) and atomic force microscopy (AFM). NEXAFS C K-edge spectra are used to compute the dichroic ratio, which provides a quantitative measure of the molecular structure. AFM data are analyzed with an elastic adhesive contact model, modified by a first-order elastic perturbation method to include substrate effects, to extract the monolayer mechanical properties. Using this approach, the measured mechanical properties are not influenced by the substrate, which allows universal structure-property relationships to be developed for all methyl-terminated alkyl SAMs.

Citation

Applied Physics Letters

Pub Type

Journals

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Citation

DelRio, F. , Rampulla, D. , Jaye, C. , Stan, G. , Gates, R. , Fischer, D. and Cook, R. (2011), Structure-property relationships for methyl-terminated alkyl self-assembled monolayers, Applied Physics Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=908238 (Accessed October 9, 2025)