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Number of results

Journal

2008 | 6 | 3 | 422-426

Article title

Scanning tunneling spectrosopy study of DNA conductivity

Content

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Languages of publication

EN

Abstracts

EN
We used STM to study the conductivity of 32 nucleotide long DNA molecules chemically attached to a gold surface. Two oligonucleotides containing all four base types namely G, A, C, T, one single stranded and one double helical, all showed conductance data significantly higher than DNA containing only T and A that were either single stranded d(T32) or double helical d(T32).d(A32) in confirmation. Within each sequence group, the conductivity of the double helical form was always higher than that of the single strand. We discuss the impact of structure, particular base stacking and affinity to the phase transition.

Contributors

  • Institute of Physics, AS-CR, v.v.i., Na Slovance 2, 182 21, Prague, Czech Republic
author
  • Institute of Physics, AS-CR, v.v.i., Na Slovance 2, 182 21, Prague, Czech Republic
  • Institute of Physics, AS-CR, v.v.i., Na Slovance 2, 182 21, Prague, Czech Republic
  • Institute of Macromolecular Chemistry, AS-CR, v.v.i., Heyrovský sq. 2, 16206, Prague, Czech Republic
  • Institute of Macromolecular Chemistry, AS-CR, v.v.i., Heyrovský sq. 2, 16206, Prague, Czech Republic
author
  • Faculty of Chemistry, Brno University of Technology, Purkynova 118, 612 00, Brno, Czech Republic
  • Faculty of Chemistry, Brno University of Technology, Purkynova 118, 612 00, Brno, Czech Republic
  • Institute of Organic Chemistry and Biochemistry, AS-CR, v.v.i., Fleming sq. 2, 166 10, Prague, Czech Republic
author
  • Faculty of Mathematics and Physics, Charles University in Prague, V Holešovièkách 2, 180 00, Prague, Czech Republic

References

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Document Type

Publication order reference

Identifiers

YADDA identifier

bwmeta1.element.-psjd-doi-10_2478_s11534-008-0072-7
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