DOI: 10.1073/pnas.122610899. Contactless experiments on individual DNA molecules show no evidence for molecular wire behavior

Contactless experiments on individual DNA molecules show no evidence for molecular wire behavior

10.1073/pnas.122610899

Crossref journal-article

Proceedings of the National Academy of Sciences

Proceedings of the National Academy of Sciences (341)

Abstract

A fundamental requirement for a molecule to be considered a molecular wire (MW) is the ability to transport electrical charge with a reasonably low resistance. We have carried out two experiments that measure first, the charge transfer from an electrode to the molecule, and second, the dielectric response of the MW. The latter experiment requires no contacts to either end of the molecule. From our experiments we conclude that adsorbed individual DNA molecules have a resistivity similar to mica, glass, and silicon oxide substrates. Therefore adsorbed DNA is not a conductor, and it should not be considered as a viable candidate for MW applications. Parallel studies on other nanowires, including single-walled carbon nanotubes, showed conductivity as expected.

Bibliography

GÃ³mez-Navarro, C., Moreno-Herrero, F., de Pablo, P. J., Colchero, J., GÃ³mez-Herrero, J., & BarÃ³, A. M. (2002). Contactless experiments on individual DNA molecules show no evidence for molecular wire behavior. Proceedings of the National Academy of Sciences, 99(13), 8484â8487.

Authors 6

C. Gómez-Navarro (first)
F. Moreno-Herrero (additional)
P. J. de Pablo (additional)
J. Colchero (additional)
J. Gómez-Herrero (additional)
A. M. Baró (additional)

References 35 Referenced 115

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10.1126/science.280.5370.1744
10.1038/27399
S Datta Electronic Transport in Mesoscopic Systems (Cambridge Univ. Press, Cambridge, U.K., 1997). / Electronic Transport in Mesoscopic Systems by Datta S (1997)
J Jortner, M Ratner Molecular Electronics (Blackwell, Oxford, 1997). / Molecular Electronics by Jortner J (1997)
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Dates

Type	When
Created	23 years ago (July 28, 2002, 6:26 p.m.)
Deposited	3 years, 4 months ago (April 12, 2022, 10:12 p.m.)
Indexed	3 weeks, 3 days ago (Aug. 2, 2025, 1:06 a.m.)
Issued	23 years, 2 months ago (June 17, 2002)
Published	23 years, 2 months ago (June 17, 2002)
Published Online	23 years, 2 months ago (June 17, 2002)
Published Print	23 years, 2 months ago (June 25, 2002)

Funders 0

None

BibTeX

@article{G_mez_Navarro_2002, title={Contactless experiments on individual DNA molecules show no evidence for molecular wire behavior}, volume={99}, ISSN={1091-6490}, url={http://dx.doi.org/10.1073/pnas.122610899}, DOI={10.1073/pnas.122610899}, number={13}, journal={Proceedings of the National Academy of Sciences}, publisher={Proceedings of the National Academy of Sciences}, author={Gómez-Navarro, C. and Moreno-Herrero, F. and de Pablo, P. J. and Colchero, J. and Gómez-Herrero, J. and Baró, A. M.}, year={2002}, month=jun, pages={8484–8487} }

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