Journal
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
Volume 108, Issue 3, Pages 961-964Publisher
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1006661107
Keywords
electron transport; functional molecules at surfaces; scanning tunneling microscopy; vibronic states
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Funding
- Deutsche Forschungsgemeinschaft [SFB 677]
- Innovationsfonds Schleswig-Holstein
- Swiss National Center of Competence in Research Nanoscale Science
- Swiss National Science Foundation
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Electronic self-decoupling of an organic chromophore from a metal substrate is achieved using a naphtalenediimide cyclophane to spatially separate one chromophore unit of the cyclophane from the substrate. Observations of vibronic excitations in scanning tunneling spectra demonstrate the success of this approach. These excitations contribute a significant part of the tunneling current and give rise to clear structure in scanning tunneling microscope images. We suggest that this approach may be extended to implement molecular functions at metal surfaces.
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