Electronic transport through short dsDNA measured with mechanically controlled break junctions : New thiol–gold binding protocol improves conductance

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2013
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Liu, Shou-Peng
Wieser, Matthias
Bornemann, Benjamin
Weisbrod, Samuel
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physica status solidi (b). 2013, 250(11), pp. 2342-2348. ISSN 0370-1972. eISSN 1521-3951. Available under: doi: 10.1002/pssb.201349158
Zusammenfassung

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.

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530 Physik
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break junction, DNA conductance, end-modification, thiol–gold binding
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ISO 690LIU, Shou-Peng, Joris ARTOIS, Daniel SCHMID, Matthias WIESER, Benjamin BORNEMANN, Samuel WEISBROD, Andreas MARX, Elke SCHEER, Artur ERBE, 2013. Electronic transport through short dsDNA measured with mechanically controlled break junctions : New thiol–gold binding protocol improves conductance. In: physica status solidi (b). 2013, 250(11), pp. 2342-2348. ISSN 0370-1972. eISSN 1521-3951. Available under: doi: 10.1002/pssb.201349158
BibTex
@article{Liu2013Elect-26149,
  year={2013},
  doi={10.1002/pssb.201349158},
  title={Electronic transport through short dsDNA measured with mechanically controlled break junctions : New thiol–gold binding protocol improves conductance},
  number={11},
  volume={250},
  issn={0370-1972},
  journal={physica status solidi (b)},
  pages={2342--2348},
  author={Liu, Shou-Peng and Artois, Joris and Schmid, Daniel and Wieser, Matthias and Bornemann, Benjamin and Weisbrod, Samuel and Marx, Andreas and Scheer, Elke and Erbe, Artur}
}
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