Reproducible measurement of single-molecule conductivity

X. D. Cui, A. Primak, X. Zarate, J. Tomfohr, O. F. Sankey, Ana L Moore, Thomas A Moore, John Devens Gust, G. Harris, S. M. Lindsay

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Abstract

A reliable method has been developed for making through-bond electrical contacts to molecules. Current-voltage curves are quantized as integer multiples of one fundamental curve, an observation used to identify single-molecule contacts. The resistance of a single octanedithiol molecule was 900 ± 50 megohms, based on measurements on more than 1000 single molecules. In contrast, nonbonded contacts to octanethiol monolayers were at least four orders of magnitude more resistive, less reproducible, and had a different voltage dependence, demonstrating that the measurement of intrinsic molecular properties requires chemically bonded contacts.

Original languageEnglish
Pages (from-to)571-574
Number of pages4
JournalScience
Volume294
Issue number5542
DOIs
Publication statusPublished - Oct 19 2001

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Cui, X. D., Primak, A., Zarate, X., Tomfohr, J., Sankey, O. F., Moore, A. L., ... Lindsay, S. M. (2001). Reproducible measurement of single-molecule conductivity. Science, 294(5542), 571-574. https://doi.org/10.1126/science.1064354

Reproducible measurement of single-molecule conductivity. / Cui, X. D.; Primak, A.; Zarate, X.; Tomfohr, J.; Sankey, O. F.; Moore, Ana L; Moore, Thomas A; Gust, John Devens; Harris, G.; Lindsay, S. M.

In: Science, Vol. 294, No. 5542, 19.10.2001, p. 571-574.

Research output: Contribution to journalArticle

Cui, XD, Primak, A, Zarate, X, Tomfohr, J, Sankey, OF, Moore, AL, Moore, TA, Gust, JD, Harris, G & Lindsay, SM 2001, 'Reproducible measurement of single-molecule conductivity', Science, vol. 294, no. 5542, pp. 571-574. https://doi.org/10.1126/science.1064354
Cui XD, Primak A, Zarate X, Tomfohr J, Sankey OF, Moore AL et al. Reproducible measurement of single-molecule conductivity. Science. 2001 Oct 19;294(5542):571-574. https://doi.org/10.1126/science.1064354
Cui, X. D. ; Primak, A. ; Zarate, X. ; Tomfohr, J. ; Sankey, O. F. ; Moore, Ana L ; Moore, Thomas A ; Gust, John Devens ; Harris, G. ; Lindsay, S. M. / Reproducible measurement of single-molecule conductivity. In: Science. 2001 ; Vol. 294, No. 5542. pp. 571-574.
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