Electronic transport through short dsDNA measured with mechanically controlled break junctions: New thiol–gold binding protocol improves conductance. Issue 11 (30th August 2013)

• Record Type: Journal Article
• Authors: Liu, S. P.; Artois, J.; Schmid, D.; Wieser, M.; Bornemann, B.; Weisbrod, S.; Marx, A.; Scheer, E.; Erbe, A.; Frauenheim, Thomas; Niehaus, Thomas; Repp, Jascha; Richter, Klaus; Weber, Heiko
• Is Part Of: Physica status solidi. Volume 250:Issue 11(2013:Nov.)
• Page Start: 2342
• Page End: 2348
• Publication Date: 2013-08-30
• Subjects: Solid state physics -- Periodicals; Solids -- Periodicals; Atomic structure -- Periodicals; 530.41
• DOI: 10.1002/pssb.201349158
• Languages: English
• ISSNs: 0370-1972

Abstract

<abstract abstract-type="main" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <sec id="pssb201349158-sec-0001" sec-type="section"> <p>It is shown that double‐stranded DNA which is directly coupled to gold via a modified thymidine base exhibits a higher conductance than reported for DNA coupled to metal electrodes using different binding schemes. The measurements of electrical conductance are performed in a mechanically controlled break junction setup in aqueous solution and in high vacuum at room temperature. The current–voltage characteristics obtained in vacuum can be understood if a single molecular energy level determines the transport.</p> </sec> </abstract>