Characterization of self-assembled monolayers on a ruthenium surface

Amrozia Shaheen, Jacobus Marinus Sturm, R. Ricciardi, Jurriaan Huskens, Christopher James Lee, Frederik Bijkerk

Research output: Contribution to journalArticleAcademicpeer-review

14 Citations (Scopus)
145 Downloads (Pure)


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.
Original languageEnglish
Pages (from-to)6419-6429
Number of pages8
Issue number25
Publication statusPublished - 6 Jun 2017


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