Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.
Reproducible Measurement of Single-Molecule Conductivity
X. D. Cui,1A. Primak,23X. Zarate,2J. Tomfohr,1O. F. Sankey,1A. L. Moore,2T. A. Moore,2D. Gust,2G. Harris,3S. M. Lindsay1
A reliable method has been developed for making through-bond
electrical contacts to molecules. Current-voltage curves arequantized
as integer multiples of one fundamental curve, an observationused to
identify single-molecule contacts. The resistance of asingle
octanedithiol molecule was 900 ± 50 megohms, based on
measurementson more than 1000 single molecules. In contrast, nonbonded
contactsto octanethiol monolayers were at least four orders of
magnitudemore resistive, less reproducible, and had a different
voltagedependence, demonstrating that the measurement of intrinsic
molecularproperties requires chemically bonded contacts.
1 Department of Physics and Astronomy,
2 Department of Chemistry and Biochemistry, Arizona
State University, Tempe, AZ 85287, USA.
3 Motorola,
2100 East Elliot Road, AZ34/EL 704, Tempe, AZ 85284, USA.
Electron tunneling through alkanedithiol self-assembled monolayers in large-area molecular junctions.
H. B. Akkerman, R. C. G. Naber, B. Jongbloed, P. A. van Hal, P. W. M. Blom, D. M. de Leeuw, and B. de Boer (2007)
PNAS
104, 11161-11166
|Abstract »|Full Text »|PDF »
First-Principles Transversal DNA Conductance Deconstructed.
X.-G. Zhang, P. S. Krstic, R. Zikic, J. C. Wells, and M. Fuentes-Cabrera (2006)
Biophys. J.
91, L04-L06
|Abstract »|Full Text »|PDF »
Covalently Bridging Gaps in Single-Walled Carbon Nanotubes with Conducting Molecules.
X. Guo, J. P. Small, J. E. Klare, Y. Wang, M. S. Purewal, I. W. Tam, B. H. Hong, R. Caldwell, L. Huang, S. O'Brien, et al. (2006)
Science
311, 356-359
|Abstract »|Full Text »|PDF »
Long-range protein electron transfer observed at the single-molecule level: In situ mapping of redox-gated tunneling resonance.
Direct measurement of electrical transport through single DNA molecules of complex sequence.
H. Cohen, C. Nogues, R. Naaman, and D. Porath (2005)
PNAS
102, 11589-11593
|Abstract »|Full Text »|PDF »
Molecular Electronics Special Feature: Probing {pi}-coupling in molecular junctions.
D. S. Seferos, S. A. Trammell, G. C. Bazan, and J. G. Kushmerick (2005)
PNAS
102, 8821-8825
|Abstract »|Full Text »|PDF »
Molecular Electronics Special Feature: Tunneling rates in electron transport through double-barrier molecular junctions in a scanning tunneling microscope.
A Bond-Fluctuation Mechanism for Stochastic Switching in Wired Molecules.
G. K. Ramachandran, T. J. Hopson, A. M. Rawlett, L. A. Nagahara, A. Primak, and S. M. Lindsay (2003)
Science
300, 1413-1416
|Abstract »|Full Text »|PDF »
Organic Molecules Acting as Templates on Metal Surfaces.
F. Rosei, M. Schunack, P. Jiang, A. Gourdon, E. Lagsgaard, I. Stensgaard, C. Joachim, and F. Besenbacher (2002)
Science
296, 328-331
|Abstract »|Full Text »|PDF »
