Characterization of the Surface to Thiol Bonding in Self-Assembled Monolayer Films of C12H25SH on InP(100) by Angle-Resolved X-ray Photoelectron Spectroscopy

Langmuir ◽  
1999 ◽  
Vol 15 (25) ◽  
pp. 8640-8644 ◽  
Author(s):  
Hiromichi Yamamoto ◽  
R. A. Butera ◽  
Y. Gu ◽  
David H. Waldeck
Keyword(s):  
Photoelectron Spectroscopy ◽  
Self Assembled Monolayer ◽  
Monolayer Films ◽  
X Ray ◽  
Self Assembled

scholarly journals X-ray spectroscopy characterization of self-assembled monolayers of nitrile-substituted oligo(phenylene ethynylene)s with variable chain length

2012 ◽  
Vol 3 ◽  
pp. 12-24 ◽  
Author(s):  
Hicham Hamoudi ◽  
Ping Kao ◽  
Alexei Nefedov ◽  
David L Allara ◽  
Michael Zharnikov
Keyword(s):  
Chain Length ◽  
Photoelectron Spectroscopy ◽  
Self Assembled Monolayers ◽  
Phenylene Ethynylene ◽  
X Ray ◽  
Molecular Length ◽  
Assembled Monolayers ◽  
Self Assembled ◽  
Gold Thiolate

Self-assembled monolayers (SAMs) of nitrile-substituted oligo(phenylene ethynylene) thiols (NC-OPEn) with a variable chain length n (n ranging from one to three structural units) on Au(111) were studied by synchrotron-based high-resolution X-ray photoelectron spectroscopy and near-edge absorption fine-structure spectroscopy. The experimental data suggest that the NC-OPEn molecules form well-defined SAMs on Au(111), with all the molecules bound to the substrate through the gold–thiolate anchor and the nitrile tail groups located at the SAM–ambient interface. The packing density in these SAMs was found to be close to that of alkanethiolate monolayers on Au(111), independent of the chain length. Similar behavior was found for the molecular inclination, with an average tilt angle of ~33–36° for all the target systems. In contrast, the average twist of the OPEn backbone (planar conformation) was found to depend on the molecular length, being close to 45° for the films comprising the short OPE chains and ~53.5° for the long chains. Analysis of the data suggests that the attachment of the nitrile moiety, which served as a spectroscopic marker group, to the OPEn backbone did not significantly affect the molecular orientation in the SAMs.

X-Ray Photoelectron Spectroscopy Study of a Self-Assembled Monolayer of Thiophene Thiol

2000 ◽  
Vol 39 (Part 1, No. 1) ◽  
pp. 252-255 ◽  
Author(s):  
Haruki Okawa ◽  
Tatsuo Wada ◽  
Hiroyuki Sasabe ◽  
Kotaro Kajikawa ◽  
Kazuhiko Seki ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Spectroscopy Study ◽  
Self Assembled Monolayer ◽  
X Ray ◽  
Self Assembled

Characterization of 4-mercaptohydrocynnamic acid self-assembled film on Au(111) by means of X-ray photoelectron spectroscopy

2001 ◽  
Vol 114-116 ◽  
pp. 371-374 ◽  
Author(s):  
A. Abdureyim ◽  
K.K. Okudaira ◽  
Y. Harada ◽  
S. Masuda ◽  
M. Aoki ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
X Ray ◽  
Self Assembled

Study of Wear Self-Repair of Steel 100Cr6 Rubbed With Lubricants Modified With Schiff Base Copper Complex

2010 ◽  
Vol 132 (3) ◽  
Author(s):  
Xinlei Gao ◽  
Li Wu ◽  
Jian Li ◽  
Wanzhen Gao
Keyword(s):  
Organic Substance ◽  
Photoelectron Spectroscopy ◽  
Selective Transfer ◽  
Self Assembled Monolayer ◽  
Force Microscopy ◽  
Atomic Force ◽  
Self Repair ◽  
Self Assembled ◽  
Rape Oil

Preparation of a Cu (II) chelate of bis(salicylaldehyde)ethylenediamine was carried out directly in epoxidized rape oil via a water/oil microemulsion reactor. Detailed characterization of the friction of boundary lubrication produced by epoxidized rape oil with and without the Cu (II) chelate of bis(salicylaldehyde)ethylenediamine was performed in reciprocating sliding tests with a microtribometer. In the presence of a modification of the epoxidized rape oil with 2 wt % of the Cu (II) chelate of bis(salicylaldehyde)ethylenediamine, the friction coefficient decreased by 15%. The Cu (II) chelate of bis(salicylaldehyde)ethylenediamine served as the additive in the epoxidized rape oil and self-assembled on the surface of 100Cr6 steel. The self-assembled monolayer was detected with atomic force microscopy and scanning electron microscopy, and characterized with cyclic voltammetry. It was verified by energy dispersive spectroscopy and X-ray photoelectron spectroscopy analyses that steel/steel rubbing pairs underwent a selective transfer of organic substance and copper, as a result of lubrication with the modified lubricant. It indicated that the modification of epoxidized rape oil with Cu (II) chelate of bis(salicylaldehyde)ethylenediamine led to wear self-repair on the steel surface, with selective transfer of a film of organic substance and copper metal.

Characterization of Self-Assembled Organic Films Using Differential Charging in X-ray Photoelectron Spectroscopy

Langmuir ◽  
2006 ◽  
Vol 22 (10) ◽  
pp. 4649-4653 ◽  
Author(s):  
Manish Dubey ◽  
Irina Gouzman ◽  
Steven L. Bernasek ◽  
Jeffrey Schwartz
Keyword(s):  
Photoelectron Spectroscopy ◽  
Organic Films ◽  
X Ray ◽  
Self Assembled
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