Monolayer films of n-perfluorocarboxylic acids (CF, ( CFZ ),COOH, where n =O-2, 5-8 ) have been formed by spontaneous adsorption at silver. Infrared reflection spectroscopy, optical ellipsometry, and contact angle measurements indicate that these films exhibit low surface free energies, that the car
Formation and structure of a spontaneously adsorbed monolayer of arachidic on silver
โ Scribed by N.E. Schlotter; Marc D. Porter; T.B. Bright; David L. Allara
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 533 KB
- Volume
- 132
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
A stable monolayer assembly can be formed on silver by the spontaneous adsorption (SA) of arachidic acid (CH3(CHz)18COOH) from hexadecane. IR spectroscopy and optical ellipsometry indicate that the structure is simii to the Langmuir-Blodgett (LB) multilayer assembly of cadmium arachidate on silver. This is a definitive example of the COIrespondence between the structure of LB and SA assemblies.
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X-ray dIffraction is used to confirm that benzene forms a fi X fi commensurate overlayer upon the basal planes of graphite. This result agrees with previous neutron diffraction studies and does not agree wth recent theoretical calculations. The reasons for this are discussed.