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Charge State Control of Molecules Reveals Modification of the Tunneling Barrier with Intramolecular Contrast

2011; American Chemical Society; Volume: 11; Issue: 4 Linguagem: Inglês

10.1021/nl104452x

1530-6992

Ingmar Swart, Tobias Sonnleitner, Jascha Repp,

Surface Chemistry and Catalysis

From scanning tunneling microscopy and spectroscopy experiments it is shown that control over the charge-state of individual molecules adsorbed on surfaces can be obtained by choosing a substrate system with an appropriate workfunction. The distribution of the additional charge is studied using difference images. These images show marked intramolecular contrast.