Revealing the Buried Metal-Organic Interface: Restructuring of the First Layer by van der Waals Forces
| Autor: | Michael G. Ramsey, Falko P. Netzer, Margareta Wagner, Stephen Berkebile |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Condensed Matter - Materials Science
Chemistry General Engineering Materials Science (cond-mat.mtrl-sci) FOS: Physical sciences General Physics and Astronomy Self-assembled monolayer Nanotechnology law.invention Metal Stress (mechanics) symbols.namesake Chemical physics law visual_art Monolayer visual_art.visual_art_medium symbols Molecule General Materials Science Scanning tunneling microscope van der Waals force Layer (electronics) |
| Popis: | With the use of molecular manipulation in a cryogenic scanning tunneling microscope, the structure and rearrangement of sexiphenyl molecules at the buried interface of the organic film with the Cu(110) substrate surface have been revealed. It is shown that a reconstruction of the first monolayer of flat lying molecules occurs due to the van der Waals pressure from subsequent layers. In this rearrangement, additional sexiphenyl molecules are forced into the established complete monolayer and adopt an edge-on configuration. Incorporation of second layer molecules into the first layer is also demonstrated by purposely pushing sexiphenyl molecules with the STM tip. The results indicate that even chemisorbed organic layers at interfaces can be significantly influenced by external stress from van der Waals forces of subsequent layers. |
| Databáze: | OpenAIRE |
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