Reversible Bond Formation in a Gold-Atom-Organic-Molecule Complex as a Molecular Switch
Journal article, 2010

We report on the formation of a metal-molecule complex that can be used as a molecular switch. Using a cryogenic scanning tunneling microscope, a covalent bond was formed reversibly between a gold atom and a perylene-3,4,9,10-tetracarboxylic dianhydride molecule supported by a thin insulating film. The bonded and the nonbonded state of the complex were found to be associated with different charge states, and the switching between the two states was accompanied by a considerable change in the tunneling current. Atomic force microscopy molecular imaging was employed to determine precisely the atomic structure of the complex, and the experimental results were corroborated by density functional theory calculations.


Fabian Mohn

Jascha Repp

Leo Gross

Gerhard Meyer

Matthew Dyer

Mats Persson

Chalmers, Applied Physics, Materials and Surface Theory

Physical Review Letters

0031-9007 (ISSN) 1079-7114 (eISSN)

Vol. 105 26

Subject Categories

Condensed Matter Physics



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