TY - JOUR
T1 - Electronic Level Structure of Silver-Intercalated Cytosine Nanowires
AU - Fardian-Melamed, Natalie
AU - Katrivas, Liat
AU - Eidelshtein, Gennady
AU - Rotem, Dvir
AU - Kotlyar, Alexander
AU - Porath, Danny
N1 - Publisher Copyright:
© 2020 American Chemical Society.
PY - 2020/6/10
Y1 - 2020/6/10
N2 - Metal-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.
AB - Metal-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.
KW - DNA nanoelectronics
KW - STM
KW - metallo-base pair
KW - scanning tunneling spectroscopy
KW - silver ions
UR - http://www.scopus.com/inward/record.url?scp=85086346516&partnerID=8YFLogxK
U2 - 10.1021/acs.nanolett.0c01292
DO - 10.1021/acs.nanolett.0c01292
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C2 - 32412760
AN - SCOPUS:85086346516
SN - 1530-6984
VL - 20
SP - 4505
EP - 4511
JO - Nano Letters
JF - Nano Letters
IS - 6
ER -