Distinct Mechanisms of DNA Sensing Based on N-Doped Carbon Nanotubes with Enhanced Conductance and Chemical Selectivity

Cited 4 time in webofscience Cited 0 time in scopus
  • Hit : 274
  • Download : 2
N-doped capped carbon nanotube (CNT) electrodes applied to DNA sequencing are studied by first-principles calculations. For the face-on nucleobase junction configurations, a conventional conductance ordering is obtained where the largest signal results from guanine according to its high highest occupied molecular orbital (HOMO) level, whereas for the edge-on counterparts a distinct conductance ordering is observed where the low-HOMO thymine provides the largest signal. The edge-on mode is shown to operate based on a novel molecular sensing mechanism that reflects the chemical connectivity between N-doped CNT caps that can act both as electron donors and electron acceptors and DNA functional groups that include the hyperconjugated thymine methyl group.
Publisher
WILEY-V C H VERLAG GMBH
Issue Date
2014-02
Language
English
Article Type
Article
Keywords

ELECTRONIC-STRUCTURE; GRAPHENE; NUCLEOTIDES; NANOPORE; DEVICE; METHYLATION; TRANSPORT; SENSORS

Citation

SMALL, v.10, no.4, pp.774 - 781

ISSN
1613-6810
DOI
10.1002/smll.201301225
URI
http://hdl.handle.net/10203/188840
Appears in Collection
EEW-Journal Papers(저널논문)
Files in This Item
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 4 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0