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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/23469

Title: High Electronic Conductance through Double-Helix DNA Molecules with Fullerene Anchoring Groups
Authors: Jiménez Monroy, Kathia
Renaud, Nicolas
Drijkoningen, Jeroen
Cortens, David
Schouteden, Koen
van Haesendonck, Christian
Guedens, Wanda
Manca, Jean V.
Siebbeles, Laurens D. A.
Grozema, Ferdinand C.
Wagner, Patrick
Issue Date: 2017
Citation: The journal of physical chemistry. A, 121(6), p. 1182-1188
Abstract: Determining the mechanism of charge transport through native DNA remains a challenge as different factors such as measuring conditions, molecule conformations, and choice of technique can significantly affect the final results. In this contribution, we have used a new approach to measure current flowing through isolated double-stranded DNA molecules, using fullerene groups to anchor the DNA to a gold substrate. Measurements were performed at room temperature in an inert environment using a conductive AFM technique. It is shown that the π-stacked B-DNA structure is conserved on depositing the DNA. As a result, currents in the nanoampere range were obtained for voltages ranging between ±1 V. These experimental results are supported by a theoretical model that suggests that a multistep hopping mechanism between delocalized domains is responsible for the long-range current flow through this specific type of DNA.
Notes: Jimenez-Monroy, KL (reprint author), Hasselt Univ, IMO IMOMEC, Campus Diepenbeek,Wetenschapspk 1, B-3590 Diepenbeek, Belgium. jimenezmonroy.kathia@gmail.com; n.renaud@tudelft.nl
URI: http://hdl.handle.net/1942/23469
DOI: 10.1021/acs.jpca.7b00348
ISI #: 000394482500003
ISSN: 1089-5639
Category: A1
Type: Journal Contribution
Appears in Collections: Research publications

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