Effect of compression of a stearic acid monolayer on interfacial binding of copper ions and cluster formation

The effect of compression of a stearic acid Langmuir monolayer on the interaction of copper ions with the monolayer and on the formation of interface clusters has been studied as functions of pH and ionic content of the water subphase. Copper binding was estimated by direct electron paramagnetic res...

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Bibliographic Details
Published in:Supramolecular science 1997-09, Vol.4 (3), p.349-355
Main Authors: Khomutov, G.B., Yakovenko, S.A., Yurova, T.V., Khanin, V.V., Soldatov, E.S.
Format: Article
Language:English
Subjects:
clusters
ions
monolayer
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Summary:The effect of compression of a stearic acid Langmuir monolayer on the interaction of copper ions with the monolayer and on the formation of interface clusters has been studied as functions of pH and ionic content of the water subphase. Copper binding was estimated by direct electron paramagnetic resonance measurements of ion concentrations in the water subphase. A scanning tunnelling microscopy study of monolayer Langmuir-Blodgett films, deposited on graphite substrates, gave evidence for the formation of nanosized clusters on the monolayer surface. The data obtained showed that the interaction of the monolayer with copper ions and the accompaning cluster formation processes were determined by the arrangement, order and mobility of the stearic acid molecules in the monolayer and the electrostatics at the interface.
ISSN:0968-5677
DOI:10.1016/S0968-5677(97)00015-1