Potential-dependent sum frequency generation study of 5-methylbenzotriazole on polycrystalline copper, platinum, and gold

Article Abstract:

In situ sum frequency generation vibrational spectroscopy was performed at varied potentials and polarization combinations on polycrystalline copper, platinum and gold samples in 0.5M HCl[O.sub.4] with 50mM 5-methylbenzotriazole 5-methylBTAH added. For copper surfaces orientation of the molecule on the surface was not affected by potential within the potential window studied and sum frequency generation spectra of 5-methyBTAH on platinum show a change in orientation over the potential range studied.

All Other Basic Inorganic Chemical Manufacturing, Industrial inorganic chemicals, not elsewhere classified, Gold Compounds, Copper compounds, Chemical properties, Methyl groups, Methyl compounds, Triazoles

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Structure, wrinkling, and reversibility of Langmuir monolayers of gold nanoparticles

Article Abstract:

The structure of Langmuir monolayers of dodecanethiol-ligated gold nanoparticles is characterized with in situ optical microscopy and X-ray scattering. It is shown that Langmuir monolayers of highly mono-disperse gold nanoparticles adopt a hexagonal packing symmetry where the interparticle spacing depends primarily upon thiol concentration.

All Other Basic Organic Chemical Manufacturing, Optical Instrument and Lens Manufacturing, Optical instruments and lenses, Industrial Organic Chemicals, Mercaptans, Optical Microscopes & Parts, Usage, Optical properties, Thiols, Optical microscopes

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