Superior n-alkanethiol monolayers on copper

Article Abstract:

A study was conducted to analyze the self-assembly of long-chain alkanethiols on copper. n-Octadecanethiol and n-octadecanol were obtained by recrystallization from ethanol. The copper films were prepared using a diffusion-pumped resistive evaporator. In addition, scanning force microscopy imaging was carried out at room temperature by a Nanoscope IIIa microscope from Digital Instruments Inc. Results indicated that copper surface oxidation promoted an increase in surface roughness that influenced the self-assembly process.

Copper, Surfaces (Materials), Surfaces (Technology)

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Enhancement in the Raman scattering of polypyrrole electrodeposited on roughened gold substrates coated with gold monolayers

Article Abstract:

A study in which polypyrrole (PPy) films are electrodeposited on gold substrates roughened by a triangular-wave oxidation-reduction cycle (ORC) in 0.1 N HCl aqueous solution is reported. The surface-enhanced Raman scattering (SERS) spectroscopy of PPy with Au monolayers/PPy/roughened Au substrate is described that exhibits a higher intensity by 1 order of magnitude and a better resolution, as compared with the normal SERS of PPy electrodeposited on a roughened Au substrate.

Substrates

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Formation process of silver-polypyrrole coaxial nanocables synthesized by redox reaction between AgNO3 and pyrrole in the presence of poly(vinylpyrrolidone)

Article Abstract:

A one-step process is demonstrated to fabricate silver-polypyrrole (PPy) coaxial nanocables. The findings suggest that silver-PPy nanocables can be fabricated through redox reaction between AgNO3 and pyrrole monomer in the presence of poly(vinylpyrrolidone) (PVP).

Electric properties, Silver compounds, Chemical synthesis

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