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Electronic Level Structure of Silver-Intercalated Cytosine Nanowires
journal contribution
posted on 2020-05-21, 16:31 authored by Natalie Fardian-Melamed, Liat Katrivas, Gennady Eidelshtein, Dvir Rotem, Alexander Kotlyar, Danny PorathMetal-mediated
base-paired DNA has long been investigated for basic
scientific pursuit and for nanoelectronics purposes. Particularly
attractive in these domains is the Ag+-intercalated polycytosine
DNA duplex. Extensive studies of this molecule have led to our current
understanding of its self-assembly properties, high thermodynamic
and structural stability, and high longitudinal conductivity. However,
a high-resolution morphological characterization of long Ag+-intercalated polycytosine DNA has hitherto not been carried out.
Furthermore, the electronic level structure of this molecule has not
been studied before. Here we present a scanning tunneling microscopy
and spectroscopy study of this intriguing nanowire. Its temperature-independent
morphological and electronic properties suggest substantial stability,
while its emergent electronic levels and energy gap provide the basis
for its high conductivity.
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intercalated polycytosine DNA duplexstabilitylevel structurenanoelectronics purposesconductivityElectronic Level Structuremoleculeintercalated polycytosine DNAExtensive studiesSilver-Intercalated Cytosine Nanowires Metal-mediated base-paired DNAenergy gapspectroscopy studyAgscanning tunneling microscopyself-assembly properties
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