Dynamic Observation of Confined Molecules in Self-Assembled Molecular Corrals
| Autor: | Ai Iwanabe, Takashi Kiyose, Masaru Shimomura |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Silicon
Chemistry Trimethylphosphine chemistry.chemical_element Electrostatics Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention chemistry.chemical_compound General Energy Adsorption Covalent bond Chemical physics law Computational chemistry Molecule Density functional theory Physical and Theoretical Chemistry Scanning tunneling microscope |
| Zdroj: | The Journal of Physical Chemistry C. 118:27465-27469 |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/jp509610x |
| Popis: | Molecular corrals self-assembled on a Si(111)-(7 × 7) surface after pyrrole exposure, enclosing silicon adatom sites where trimethylphosphine (TMP) was then datively adsorbed. The phosphine’s dynamic motion was investigated by scanning tunneling microscopy. The TMP was confined by the corral, hopping on adatom sites within it. Density functional theory calculations showed covalent bonding between the pyrroles and surface silicon atoms because of N–H dissociative adsorption. An electropositive potential around the TMP/Si cluster may induce electrostatic repulsion between the adsorbed molecules. |
| Databáze: | OpenAIRE |
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