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  Conductance of a single conjugated polymer as a continuous function of its length

Lafferentz, L., Ample, F., Yu, H., Hecht, S., Joachim, C., & Grill, L. (2009). Conductance of a single conjugated polymer as a continuous function of its length. Science, 323(5918), 1193-1197. doi:10.1126/science.1168255.

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Lafferentz, Leif1, Autor           
Ample, Francisco, Autor
Yu, Hao, Autor
Hecht, Stefan, Autor
Joachim, Christian, Autor
Grill, Leonhard1, Autor           
Affiliations:
1Physical Chemistry, Fritz Haber Institute, Max Planck Society, ou_634546              

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Schlagwörter: molecular junctions; electron-transport; wire; transparency; resistance
 Zusammenfassung: The development of electronic devices at the single-molecule scale requires detailed understanding of charge transport through individual molecular wires. To characterize the electrical conductance, it is necessary to vary the length of a single molecular wire, contacted to two electrodes, in a controlled way. Such studies usually determine the conductance of a certain molecular species with one specific length. We measure the conductance and mechanical characteristics of a single polyfluorene wire by pulling it up from a Au(111) surface with the tip of a scanning tunneling microscope, thus continuously changing its length up to more than 20 nanometers. The conductance curves show not only an exponential decay but also characteristic oscillations as one molecular unit after another is detached from the surface during stretching.

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Sprache(n): eng - English
 Datum: 2009-02-27
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Art des Abschluß: -

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Titel: Science
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 323 (5918) Artikelnummer: - Start- / Endseite: 1193 - 1197 Identifikator: -