Surface Organization of a Spontaneously Adsorbed Monolayer of Arachidic Acid on Silver

N. E. Schlotter; T. Bright; D. L. Allara

doi:10.1117/12.970932

20 December 1985 Surface Organization of a Spontaneously Adsorbed Monolayer of Arachidic Acid on Silver

N. E. Schlotter, T. Bright, D. L. Allara

Proceedings Volume 0553, Fourier and Computerized Infrared Spectroscopy; (1985) https://doi.org/10.1117/12.970932
Event: 1985 International Conference on Fourier and Computerized Infrared Spectroscopy, 1985, Ottawa, Canada

Abstract

Grazing incidence infrared (GI-IR) spectra of spontaneously adsorbed monolayers of arachidic acid on ambient silver surfaces have been recorded. These spectra are very similar to previously obtained measurements on Langmuir - Blodgett (L-B) deposited films prepared from the corresponding carboxylate salts indicating great similarity between the L-B and spontaneously formed films. The acidic head group has reacted with the silver/silver oxide surface to form a carboxylate salt. Additionally, the hydrocarbon chains have assumed a planar zig-zag conformation. These chains are oriented approximately normal to the surface. The spectrum of arachidic acid, CH3(CH2 -) 18COOH, indicates an orthorhombic subcell packing arrangement. Studies with isotopically labeled n-alkanoic acids have been carried out to confirm some mode assignments.

Citation Download Citation

N. E. Schlotter, T. Bright, and D. L. Allara "Surface Organization of a Spontaneously Adsorbed Monolayer of Arachidic Acid on Silver", Proc. SPIE 0553, Fourier and Computerized Infrared Spectroscopy, (20 December 1985); https://doi.org/10.1117/12.970932

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