Near-Infrared Surface-Enhanced Raman Spectroscopy. Part I: Copper and Gold Electrodes

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Abstract:

Surface-enhanced Raman spectra of pyridine on copper and gold electrodes in the near-infrared were obtained with a Fourier transform Raman spectrometer. Surface-enhanced Raman spectra were observed for pyridine adsorbed on copper and gold electrodes while a Nd:YAG laser (1.064 μm) was used for excitation. Good-quality spectra were recorded for 0.08 mM pyridine on a copper electrode with a single oxidation-reduction cycle, whereas for a gold electrode, several ORCs were necessary. A very intense low-energy Raman band was observed on both metals at positive potentials, which may be due to a metal-oxide vibrational mode.

Keywords: Copper electrode; FT-IR; Gold electrode; Lasers, Nd:YAG; Light scattering; NIR; Raman; SERS

Document Type: Rapid Communication

DOI: http://dx.doi.org/10.1366/0003702884429698

Affiliations: 1: Environmental Sciences Division, Lawrence Livermore National Laboratory, Livermore, California 94550 2: Department of Chemistry BG-10, University of Washington, Seattle, Washington 98195

Publication date: November 1, 1988

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