Title: A Multivalent Hexapod: Conformational Dynamics of Six-Legged Molecules in Self-Assembled Monolayers at a Solid-Liquid Interface
Authors: Xu, Hong ×
Minoia, Andrea
Tomovic, Zeljko
Lazzaroni, Roberto
Meijer, E. W
Schenning, Albertus P. H. J
De Feyter, Steven #
Issue Date: Apr-2009
Publisher: Amer chemical soc
Series Title: ACS Nano vol:3 issue:4 pages:1016-1024
Abstract: A molecular hexapod having a benzene core and six oligo(p-phenylene vinylene) (OPV) legs is an ideal system to probe various types of (intramolecular) dynamics of individual molecules in physisorbed self-assembled monolayers at a solid-liquid interface. Scanning tunneling microscopy reveals that molecules adsorb in 2D crystalline as well as disordered domains. Strikingly, not all molecules have the six OPV units in contact with the graphite substrate: 4% of the molecules in the 2D crystalline domains and up to 80% of the molecules in the disordered domains have one or two OPV units desorbed. In addition, the presence of such a defect promotes the coexistence of another defect adjacent to it. Time-dependent STM experiments and molecular dynamics simulations reveal in detail the different dynamics involved and the multivalent nature of the interactions between hexapod and surface.
ISSN: 1936-0851
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Molecular Imaging and Photonics
× corresponding author
# (joint) last author

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