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Kleine-Ostmann, T.* ; Jördens, C.* ; Baaske, K.* ; Weimann, T.* ; Hrabě de Angelis, M. ; Koch, M.*

Conductivity of single-stranded and double-stranded deoxyribose nucleic acid under ambient conditions: The dominance of water.

Appl. Phys. Lett. 88:102102 (2006)
Verlagsversion DOI
Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
We investigate the conductivity of single-stranded and double-stranded herring deoxyribose nucleic acid(DNA) in buffer solution spotted and dried on Aunanocontacts. We find an exponential increase of the conductivity with increasing humidity that is identical for single- and double-stranded DNA within the measurement accuracy. While the small conductivity of dry DNA is comparable to that of a large band-gap semiconductor, we attribute the increase at high humidity levels to water molecules accumulated at the phosphate backbone. For high humidities we observe s-shaped current-voltage characteristics that can be well explained by the dissociation of water attached to the DNA molecules.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
ISSN (print) / ISBN 0003-6951
e-ISSN 1077-3118
Quellenangaben Band: 88, Heft: 10, Seiten: , Artikelnummer: 102102 Supplement: ,
Verlag American Institute of Physics (AIP)
Begutachtungsstatus Peer reviewed