Surface-Assisted Photoinduced Reduction of p-Nitrothiophenol Self-Assembled Monolayer Adsorbed on a Smooth Silver Electrode

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Abstract
It was observed that surface-enhanced Raman scattering (SERS) spectra of p-nitrothiophenol (PNTP) self-assembled monolayer adsorbed on a smooth silver electrode changed by laser light irradiation. The SERS spectra were identical with those of p-aminothiophenol (PATP). This reaction proceeded even at the electrode potential where PNTP was electrochemically stable under dark. It was found that photoinduced reduction of PNTP occurred on a smooth silver electrode surface.