Sum frequency generation spectroscopy and double-layer capacitance studies of the 1-butyl-3-methylimidazolium dicyanamide-platinum interface

Article Abstract:

The orientation of the cation and the anion of 1-butyl-3-methylimidazolium dicyanamide at the platinum-liquid interface are reported, using sum frequency generation (SFG) spectroscopy. Results suggest that the imidazolium ring in the cation tends to lie flat at the surface of the electrode at negative potentials but is repelled at positive ones, while the anion is strongly adsorbed at the surface of the platinum at more positive potentials with its [C.sub.2] axis aligned with the surface normal.

Science & research, Research, Spectrum analysis, Spectroscopy, Surface chemistry, Platinum compounds, Platinum catalysts

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Sum frequency generation spectroscopy of dicyanamide based room-temperature ionic liquids. Orientation of the cation and the anion at the gas-liquid interface

Article Abstract:

Sum frequency generation vibrational spectroscopy is used for studying the orientation of the cation and the anion of room-temperature ionic liquids. The results have shown that presence of both ionic species at the gas-liquid interface and have described the behavior of a simple inorganic anion at the surface.

Liquids, Thermal properties, Ionic solutions, Vibrational spectra

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