NIST logo

Publication Citation: Elastic and adhesive properties of alkanethiol self-assembled monolayers on gold

NIST Authors in Bold

Author(s): Frank W. DelRio; Cherno Jaye; Daniel A. Fischer; Robert F. Cook;
Title: Elastic and adhesive properties of alkanethiol self-assembled monolayers on gold
Published: March 30, 2009
Abstract: Elastic and adhesive properties of alkanethiol (CH3(CH2)n 1SH) self-assembled monolayers on gold are investigated by atomic force microscopy and correlated with surface structure via near edge x-ray absorption fine structure spectroscopy. As the chain length n decreases from 18 to 5, the elastic modulus of the monolayer film, Ef, decreases from 1.0 GPa to 0.15 GPa and the work of adhesion, w, increases from 82.8 mJ m−2 to 168.3 mJ m−2. The Ef and w trends are interpreted in terms of the dichroic ratios, RI, which reveal distinct changes in chain orientation, order, and coverage over the range of n.
Citation: Applied Physics Letters
Volume: 94
Issue: 13
Keywords: atomic force microscopy; mechanical properties; self-assembled monolayers
Research Areas: Nanomaterials
PDF version: PDF Document Click here to retrieve PDF version of paper (373KB)