Direct Measurement of Electrical Transport Through G-Quadruplex DNA with Mechanically Controllable Break Junction Electrodes


Direct Measurement of Electrical Transport Through G-Quadruplex DNA with Mechanically Controllable Break Junction Electrodes

Liu, S.-P.; Weisbrod, S.; Tang, Z.; Marx, A.; Scheer, E.; Erbe, A.

Here we report on direct transport measurements on a G-quadruplex covalently wired between two gold electrodes realized by the mechanically controllable break junction technique. We found that the G-quadruplex shows a rather high conductance. Interestingly, when the distance of both electrodes was reversibly varied over a several nm-span this conductance behavior persists reproducibly. These hitherto unprecedented properties make G-quadruplexes interesting candidates for nanoelectronic applications where varied distances between electrodes need bridging without loss of conductance.

Keywords: molecular electronics; DNA; mechanically controlled break junctions; nanoelectronics

Permalink: https://www.hzdr.de/publications/Publ-14252
Publ.-Id: 14252