Abstract
α-Dodecatungstosilicate (α-SiW12O404-) anions form ordered monolayers on Ag(111) and Au(111) surfaces. In-situ STM images reveal that the silicotungstate ion forms a square adlattice with an intermolecule spacing of 10.2±0.5 angstroms on both Ag and Au surfaces. Additional structures exhibiting either row or rhombic motifs are observed on Au electrodes. The structure of the adlattices can be modeled using a simple model which maximizes the coordination of the silicotungstate ion to the electrode while maintaining van der Waals contacts between terminal oxygens of adjacent silicotungstates.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 99-108 |
| Number of pages | 10 |
| Journal | Materials Research Society Symposium - Proceedings |
| Volume | 451 |
| State | Published - 1997 |
| Event | Proceedings of the 1996 MRS Fall Meeting - Boston, MA, USA Duration: Dec 2 1996 → Dec 5 1996 |
ASJC Scopus subject areas
- General Materials Science
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering