Transverse tunneling through DNA hydrogen bonded to an electrode.
Nano Lett
; 8(8): 2530-4, 2008 Aug.
Article
em En
| MEDLINE
| ID: mdl-18662039
Guanidinium ions tethered to an electrode form electrical contacts to DNA via hydrogen bonding with the backbone phosphates, thus providing a sequence-independent electrical connector for native DNA submerged in an aqueous electrolyte. DNA adlayers on a guanidinium modified electrode can be imaged by scanning tunneling microscopy with tens of pS gap conductance. The image resolution suggests that multiatom contacts contribute to the tunnel conductance, so we estimate that the single-nucleotide pair conductance may be on the order of 1 pS.
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1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
DNA
Idioma:
En
Revista:
Nano Lett
Ano de publicação:
2008
Tipo de documento:
Article
País de afiliação:
Estados Unidos
País de publicação:
Estados Unidos