Infrared absorption enhancement for Co adsorbed on Au films in perchloric acid solutions and effects of surface structure studied by cyclic voltammetry, scanning tunneling microscopy, and surface-enhanced IR spectroscopy

Article Abstract:

A study was conducted to analyze the adsorption of carbon monoxide on gold thin film electrodes vacuum-deposited on silicon substrate. Surface-enhanced infrared absorption spectroscopy, cyclic voltammetry and scanning tunneling microscopy were utilized to carry out the analysis. Experimental results indicated that 20 nm tick gold films supported island crystallites with a median size of ca. 60 nm. Findings also showed that the voltammetric characteristics of the films were similar to that of bulk polycrystalline gold electrodes.

Thin films, Carbon monoxide, Electrodes, Silicon

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Dimerization of sulfur headgroups in 4-mercaptopyridine self-assembled monolayers on Au(111) studied by scanning tunneling microscopy

Article Abstract:

A study was conducted to analyze the structure of self-assembled monolayers of 4-mercaptopyridine on Au(111) in perchloric acid solution by in situ scanning tunneling microscopy. The electrolyte solutions were made with ultrapure HClO4. The Au(111) surface utilized was a facet on a single-crystal gold bead. Results indicated that 4-PySH molecules were absorbed on the surface as thiolate and disulfide in neutral solutions.

Usage, Monomolecular films, Surfaces (Materials), Scanning tunneling microscopy, Molecules, Electrolytes, Surfaces (Technology)

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Molecular orientation and ordered structure of benzenthiol adsorbed on gold (111)

Article Abstract:

Research is presented describing the methods used to analyse the ordered structure sna molecular orientation of gold(111) adsorbed with benzenethiol.

Molecular structure, Chemistry, Physical and theoretical, Physical chemistry, Gold compounds, Phenethylamines

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