Visualization and Spectroscopy of a Metal-Molecule-Metal Bridge

Artificial nanostructures, each composed of a copper(II) phthalocyanine (CuPc) molecule bonded to two gold atomic chains with a controlled gap, were assembled on a NiAl(110) surface by manipulation of individual gold atoms and CuPc molecules with a scanning tunneling microscope. The electronic densi...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 2003-10, Vol.302 (5642), p.77-81
Main Authors: Nazin, G. V., Qiu, X. H., Ho, W.
Format: Article
Language:English
Subjects:
Adsorption
Atomic interactions
Atoms
Bioelectrochemistry
Biotechnology
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Design and construction
Electric properties
Electronic structure
Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures
Electronic structure of nanoscale materials : clusters, nanoparticles, nanotubes, and nanocrystals
Exact sciences and technology
Geometry
Laboratory Equipment
Metals
Molecular chains
Molecular interactions
Molecular structure
Molecules
Orbitals
Physics
Specialty chemicals
Spectroscopy
Spectrum analysis
Visualization
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Summary:Artificial nanostructures, each composed of a copper(II) phthalocyanine (CuPc) molecule bonded to two gold atomic chains with a controlled gap, were assembled on a NiAl(110) surface by manipulation of individual gold atoms and CuPc molecules with a scanning tunneling microscope. The electronic densities of states of these hybrid structures were measured by spatially resolved electronic spectroscopy and systematically tuned by varying the number of gold atoms in the chains one by one. The present approach provides structural images and electronic characterization of the metal-molecule-metal junction, thereby elucidating the nature of the contacts between the molecule and metal in this junction.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.1088971