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Author Spotlight: Exploring Self-Assembled MOF-Polymer Composites
Published on: June 14, 2024
Characterization of Self-Assembled Monolayers on a Ruthenium Surface
A Shaheen1, J M Sturm1, R Ricciardi1
1Industrial focus group XUV Optics, MESA+ Institute for Nanotechnology, and ‡MNF group, MESA+ Institute for Nanotechnology, University of Twente , Enschede, The Netherlands.
Abstract:
We have modified and stabilized the ruthenium surface by depositing a self-assembled monolayer (SAM) of 1-hexadecanethiol on a polycrystalline ruthenium thin film. The growth mechanism, dynamics, and stability of these monolayers were studied. SAMs, deposited under ambient conditions, on piranha-cleaned and piranha + H2SO4 cleaned substrates were compared to monolayers formed on H-radical-cleaned Ru surfaces. We found that alkanethiols on H-radical-cleaned Ru formed densely packed monolayers that remained stable when kept in a nitrogen atmosphere. X-ray photoelectron spectroscopy (XPS) shows a distinct sulfur peak (BE = 162.3 eV), corresponding to metal-sulfur bonding. When exposed to ambient conditions, the SAM decayed over a period of hours.
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