Dynamic Observation of Confined Molecules in Self-Assembled Molecular Corrals

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, hoppin...

Full description

Saved in:
Bibliographic Details
Published inJournal of physical chemistry. C Vol. 118; no. 47; pp. 27465 - 27469
Main Authors Shimomura, Masaru, Iwanabe, Ai, Kiyose, Takashi
Format Journal Article
LanguageEnglish
Published American Chemical Society 26.11.2014
Online AccessGet full text

Cover

More Information
Summary: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.
ISSN:1932-7447
1932-7455
DOI:10.1021/jp509610x