title: High Electronic Conductance through Double-Helix DNA Molecules with Fullerene Anchoring Groups.
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.
authors.affiliation: IMO-IMOMEC, Hasselt University , Campus Diepenbeek, Wetenschapspark 1, 3590 Diepenbeek, Belgium.
authors.forename: Kathia L
authors.initials: KL
authors.lastname: Jiménez-Monroy
authors.affiliation: Department of Chemical Engineering, Delft University of Technology , Julianalaan 136, 2628 BL Delft, The Netherlands.
authors.forename: Nicolas
authors.initials: N
authors.lastname: Renaud
authors.affiliation: IMO-IMOMEC, Hasselt University , Campus Diepenbeek, Wetenschapspark 1, 3590 Diepenbeek, Belgium.|IMO & X-LaB, Agoralaan Building D, 3590 Diepenbeek, Belgium.
authors.forename: Jeroen
authors.initials: J
authors.lastname: Drijkoningen
authors.affiliation: IMO-IMOMEC, Hasselt University , Campus Diepenbeek, Wetenschapspark 1, 3590 Diepenbeek, Belgium.
authors.forename: David
authors.initials: D
authors.lastname: Cortens
authors.forename: Koen
authors.initials: K
authors.lastname: Schouteden
authors.forename: Christian
authors.initials: C
authors.lastname: van Haesendonck
authors.affiliation: IMO-IMOMEC, Hasselt University , Campus Diepenbeek, Wetenschapspark 1, 3590 Diepenbeek, Belgium.
authors.forename: Wanda J
authors.initials: WJ
authors.lastname: Guedens
authors.affiliation: IMO-IMOMEC, Hasselt University , Campus Diepenbeek, Wetenschapspark 1, 3590 Diepenbeek, Belgium.|IMO & X-LaB, Agoralaan Building D, 3590 Diepenbeek, Belgium.
authors.forename: Jean V
authors.initials: JV
authors.lastname: Manca
authors.affiliation: Department of Chemical Engineering, Delft University of Technology , Julianalaan 136, 2628 BL Delft, The Netherlands.
authors.forename: Laurens D A
authors.identifier: http://orcid.org/0000-0002-4812-7495
authors.initials: LD
authors.lastname: Siebbeles
authors.affiliation: Department of Chemical Engineering, Delft University of Technology , Julianalaan 136, 2628 BL Delft, The Netherlands.
authors.forename: Ferdinand C
authors.initials: FC
authors.lastname: Grozema
authors.affiliation: IMO-IMOMEC, Hasselt University , Campus Diepenbeek, Wetenschapspark 1, 3590 Diepenbeek, Belgium.
authors.forename: Patrick H
authors.initials: PH
authors.lastname: Wagner
mesh_terms: D059371:DNA, B-Form / Q000737:chemistry*; D004553:Electric Conductivity; D037741:Fullerenes / Q000737:chemistry*; D008956:Models, Chemical; D053770:Nanowires / Q000737:chemistry; D009690:Nucleic Acid Conformation
chemical_list: D059371:DNA, B-Form; D037741:Fullerenes