Study of the helium cross-section of unsymmetric disulfide self-assembled monolayers on Au(111)

Download

index.pdf

Date

2016-12-30

Author

ALBAYRAK, EROL
KARABUĞA, ŞEMİSTAN
Bracco, Gianangelo
Danışman, Mehmet Fatih

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

159
views

103
downloads

We have investigated the formation of self-assembled monolayers (SAMs) of 11-hydroxyundecyl decyl disulfide (CH3-(CH2)(9)-S-S-(CH2)(11)-OH, HDD) and 11-hydroxyundecyl octadecyl disulfide (CH3-(CH2)(17)-S-S-(CH2)(11) -OH, HOD) produced by supersonic molecular beam deposition (SMBD). The study has been carried out by means of helium diffraction at very low film coverage. In this regime helium single molecule cross sections have been estimated in a temperature range between 100K and 450K. The results show a different behavior above 300K that has been interpreted as the starting of mobility with the formation of two thiolate moieties either linked by a gold adatom or distant enough to prevent cross section overlapping. Finally, helium diffraction patterns measured at 80 K for the SAMs grown at 200 K are discussed and the results support the proposed hypothesis of molecular dissociation based on the cross section data.

URI

https://hdl.handle.net/11511/41855

Journal

APPLIED SURFACE SCIENCE

DOI

https://doi.org/10.1016/j.apsusc.2016.08.062

Collections

Department of Chemistry, Article

Suggestions

OpenMETU
Core

Study of W boson production in pPb collisions at root(NN)-N-S=5.02 TeV Adam, W.; et. al. (Elsevier BV, 2015-11-01) The first study of W boson production in pPb collisions is presented, for bosons decaying to a muon or electron, and a neutrino. The measurements are based on a data sample corresponding to an integrated luminosity of 34.6 nb(-1) at a nucleon-nucleon centre-of-mass energy of root(NN)-N-S = 5.02 TeV, collected by the CMS experiment. The W boson differential cross sections, lepton charge asymmetry, and forward-backward asymmetries are measured for leptons of transverse momentum exceeding 25 GeV/c, and as a fu...
Study of B Meson Production in p plus Pb Collisions at root s(NN)=5.02 TeV Using Exclusive Hadronic Decays Khachatryan, V.; et. al. (American Physical Society (APS), 2016-01-01) The production cross sections of the B+, B-0, and B-s(0) mesons, and of their charge conjugates, are measured via exclusive hadronic decays in p + Pb collisions at the center-of-mass energy root s(NN) = 5.02 TeV with the CMS detector at the CERN LHC. The data set used for this analysis corresponds to an integrated luminosity of 34.6 nb(-1). The production cross sections are measured in the transverse momentum range between 10 and 60 GeV/c. No significant modification is observed compared to proton-proton pe...
Study of Z Boson Production in PbPb Collisions at root s(NN)=2.76 TeV Chatrchyan, S.; et. al. (2011-05-01) A search for Z bosons in the mu(+)mu(-) decay channel has been performed in PbPb collisions at root s(NN) = 2.76 TeV with the CMS detector at the LHC, in a 7.2 mu b(-1) data sample. The number of opposite-sign muon pairs observed in the 60-120 GeV/c(2) invariant mass range is 39, corresponding to a yield per unit of rapidity (y) and per minimum bias event of [33.8 +/- 5.5(stat) +/- 4.4(syst)] x 10(-8), in the vertical bar y vertical bar < 2.0 range. Rapidity, transverse momentum, and centrality dependencies...
Investigation of copolymers of thiophene-functionalized polystyrene with pyrrole by pyrolysis mass spectrometry Papila, Ozge; Toppare, Levent Kamil; Hacaloğlu, Jale (2006-06-01) The thermal and structural characterization of electrochemically synthesized thiophene-functionalized polystyrene and pyrrole (PS/PPy) and their copolymers were investigated by direct pyrolysis mass spectrometry. The pyrolysis data confirmed the growth of polypyrrole onto the pendant thiophene moiety of polystyrene. It is determined that the electrolytic film has different properties from the mechanical mixture and the related homopolymers.
STUDY OF CHARMED HADRONS LIFETIME WITH 400 GEV PROTONS AT THE CERN-SPS Öz, Canay; Güler, Ali Murat; Department of Physics (2022-9-2) The Standard Model of particle physics contains three active neutrinos associated to three charged leptons: electron, muon and tau. Electron neutrino and muon neutrino were experimentally observed in 1956 and 1962 respectively but observation of tau neutrino was released at the beginning of 21st century as its observation requires special detection techniques. Only few measurements with limited statistics have been done in order to measure its properties. The DsTau project at CERN has been proposed to study...

Citation Formats

E. ALBAYRAK, Ş. KARABUĞA, G. Bracco, and M. F. Danışman, “Study of the helium cross-section of unsymmetric disulfide self-assembled monolayers on Au(111),” APPLIED SURFACE SCIENCE, pp. 283–288, 2016, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/41855.