TY - JOUR
T1 - Characterization of self-assembled monolayers on a ruthenium surface
AU - Shaheen, Amrozia
AU - Sturm, Jacobus Marinus
AU - Ricciardi, R.
AU - Huskens, Jurriaan
AU - Lee, Christopher James
AU - Bijkerk, Frederik
PY - 2017/6/6
Y1 - 2017/6/6
N2 - 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.
AB - 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.
UR - http://pubs.acs.org/doi/full/10.1021/acs.langmuir.7b01068
U2 - 10.1021/acs.langmuir.7b01068
DO - 10.1021/acs.langmuir.7b01068
M3 - Article
VL - 33
SP - 6419
EP - 6429
JO - Langmuir
JF - Langmuir
SN - 0743-7463
IS - 25
ER -