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March 1, 1991Langmuir242 citations

Formation and characterization of a highly ordered and well-anchored alkylsilane monolayer on mica by self-assembly

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CKCarl R. KesselSGSteve Granick

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Abstract

A close-packed, well-ordered monolayer can be formed on a freshly cleaved muscovite mica surface by allowing hydrolyzed octadecyltriethoxysilane to self-assemble from a dilute hydrocarbon solution. The alkyl chains in the monolayer deposited by this method appear to be in a pseudocrystalline environment. Contact angle measurements and Fourier transform infrared spectroscopy indicate that the layer is in all respects equal to a Langmuir-Blodgett monolayer in packing density (almost-equal-to 20 angstrom 2/molecule) and order, but the adhesion of the self-assembled monolayer to the mica surface is much better than that obtainable by any other method of monolayer formation. The self-assembling species, octadecylsilanetriol or low order oligomers, is shown to be surprisingly stable to condensation in dilute solution. The ability to form robust, well-ordered monolayers on mica should open up new possibilities for tailor-made surfaces to be studied in the surface forces apparatus.

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Cite This Study

Kessel et al. (1991) studied this question.

synapsesocial.com/papers/6a6f3ab2e36a167817e0f1a6https://doi.org/10.1021/la00051a020
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