Scanning Tunneling Microscopy Characterization of Organoselenium Monolayers on Au(111)
| Autor: | Frank J. Feher, Mark H. Dishner, and J. C. Hemminger |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
Auger electron spectroscopy
Chemistry Annealing (metallurgy) Analytical chemistry Selenol Surfaces and Interfaces Benzeneselenol Condensed Matter Physics law.invention chemistry.chemical_compound Crystallography Chemisorption law Monolayer Electrochemistry General Materials Science Scanning tunneling microscope Diphenyl diselenide Spectroscopy |
| Zdroj: | Langmuir. 13:4788-4790 |
| ISSN: | 1520-5827 0743-7463 |
| DOI: | 10.1021/la970397t |
| Popis: | Self-assembled monolayers were formed by immersing Au(111) surfaces into solutions of benzeneselenol and diphenyl diselenide. Chemisorption of benzeneselenol produced numerous gold islands (20−200 A in diameter) on the surface and a selenium-containing monolayer with a fundamental repeat unit of (3√3 × 2√3)R30°. Upon annealing at 60 °C in air, these gold islands coalesce to form larger, hexagonal-shaped islands. Chemisorption of diphenyl diselenide is qualitatively similar and upon annealing appears to produce the same surface structures observed with benzeneselenol. These organoselenium-modified surfaces were investigated by scanning tunneling microscopy (STM) and Auger electron spectroscopy (AES). |
| Databáze: | OpenAIRE |
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