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Reversible Bond Formation in a Gold-Atom-Organic-Molecule Complex as a Molecular Switch

Fabian Mohn ; Jascha Repp ; Leo Gross ; Gerhard Meyer ; Matthew Dyer ; Mats Persson (Institutionen för teknisk fysik, Material- och ytteori)
Physical Review Letters (0031-9007). Vol. 105 (2010), 26,
[Artikel, refereegranskad vetenskaplig]

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.

Denna post skapades 2011-01-13. Senast ändrad 2011-04-28.
CPL Pubid: 133518


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