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The surface-enhanced infrared spectrometry of p-nitrothiophenol and its disulfide on silver films has been investigated by using deposition from solution, from self-assembled monolayers, and from the vapor
phase using a direct-deposition gas chromatography/infrared (GC-IR) interface. In solution, the thiophenol oxidizes to form the disulfide, which then adsorbs to the silver film. If a silver film is deposited
on top of a layer of the disulfide, the resulting spectrum is strongly different from that seen with a silver underlayer, more closely resembling the spectrum obtained from the self-assembled monolayer.
When a GC-IR interface is used, the presence of the enhancement appears to be correlated with temperature-dependent chemisorption.
The Society publishes the internationally recognized, peer reviewed journal, Applied Spectroscopy, which is available both in print and online. Subscriptions are included with membership or can be purchased by institutional or corporate organizations. Abstracts may be viewed free of charge. Previously published as Bulletin (Society for Applied Spectroscopy)