Author:
Carson George A.,Granick Steve
Abstract
A method is described to deposit a securely attached, self-assembled monolayer of octadecyltrichlorosilane (OTS) on the surface of freshly cleaved muscovite mica. Comparison of the infrared methylene spectra with those of closely packed Langmuir-Blodgett films implies that the surface coverage of the OTS films was a fraction 0.8–0.9 that of films formed by Langmuir-Blodgett (LB) methods. However, LB monolayers are less securely attached to the substrate. The contact angle of water on these self-assembled monolayers remained over 100° for over 24 h and it suffered no noticeable degradation after prolonged reflux in cyclohexane. The method to form an OTS monolayer on mica involves three steps; first, ion exchange of the native K+ ions of cleaved mica for H+ ions; second, control of the quantity of resulting water on the mica surface; third, adsorption and surface polymerization of octadecyltrichlorosilane (OTS) by self-assembly from dilute cyclohexane solution.
Publisher
Springer Science and Business Media LLC
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Reference36 articles.
1. Built-Up Films of Barium Stearate and Their Optical Properties
2. Contact angle hysteresis in oxygen plasma treated poly(tetrafluoroethylene)
3. 32 We are not yet able to determine the thickness of the resulting film of water. Normally ellipsometry would be the obvious candi date to answer such a question; however, it happens ( Nuzzo R. , private communication) that, owing to mica's low reflectivity and anisotropic optical properties, ellipsometry is inapplicable to studying mica.
4. Transmission Spectra without Interference Fringes
5. 27 Carson G. A. , Thesis M. S. , University of Illinois at Urbana-Champaign, 1989.
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