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Dipole Amplification: A Principle for the Self‐Assembly of Asymmetric Monomers on Metal Surfaces
Author(s) -
Vaughan Owain P. H.,
Alavi Ali,
Williams Federico J.,
Lambert Richard M.
Publication year - 2008
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200704172
Subject(s) - dipole , intermolecular force , chemical physics , adsorption , molecule , materials science , self assembly , moment (physics) , metal , nanostructure , bond dipole moment , monomer , tetramer , styrene , crystallography , nanotechnology , chemistry , electric dipole moment , physics , polymer , organic chemistry , copolymer , classical mechanics , enzyme , metallurgy , composite material
Self‐assembled nanostructures : Charge transfer from an adsorbed molecule to a metal surface induces an in‐plane dipole moment that is strong enough to drive self‐assembly. The STM image shows a styrene tetramer adsorbed on Ag(100). The dipole moment of styrene changes from 0.15 D in the gaseous state to 1.12 D in the adsorbed state. This substrate‐induced dipole amplification is crucial to increasing the intermolecular interaction energy.