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 was a fraction 0.8-0.9 that of films formed by Langmuir-Blodgett methods. However, LB monolayers are less securely attached to the substrate. The contact angle of water on these 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 involves three steps: ion exchange of the native K+ ions of cleaved mica for H+ ions, control of the quantity of resulting water on the mica surface, and adsorption and surface polymerization of octadecyltrichlorosilane by self-assembly from dilute cyclohexane solution.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1745-1751 |
| Number of pages | 7 |
| Journal | Journal of Materials Research |
| Volume | 5 |
| Issue number | 8 |
| DOIs | |
| State | Published - Aug 1990 |
| Externally published | Yes |
ASJC Scopus subject areas
- General Materials Science
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering