Molecular conductance of double-stranded DNA evaluated by electrochemical capacitance spectroscopy

Conductance was measured in two different double stranded DNA (both with 20 bases), the more conducting poly(dG)-poly(dC) (ds-DNAc) and the less conducting poly(dA)-poly(dT) (ds-DNAi), by means of Electrochemical Capacitance Spectroscopy (ECS). The use of the ECS approach, exemplified herein with DN...

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Bibliographic Details
Published inNanoscale Vol. 8; no. 16; pp. 8931 - 8938
Main Authors Ribeiro, W C, Gonçalves, L M, Liébana, S, Pividori, M I, Bueno, P R
Format Journal Article
LanguageEnglish
Published England 28.04.2016
Subjects
Capacitance
Conductance
Conduction
Deoxyribonucleic acid
Dielectric Spectroscopy - methods
DNA - chemistry
Electric Capacitance
Electric Conductivity
Electron Transport
Models, Chemical
Nanostructure
Nanotechnology
Nanowires
Nanowires - chemistry
Spectroscopy
Time dependence
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Summary:Conductance was measured in two different double stranded DNA (both with 20 bases), the more conducting poly(dG)-poly(dC) (ds-DNAc) and the less conducting poly(dA)-poly(dT) (ds-DNAi), by means of Electrochemical Capacitance Spectroscopy (ECS). The use of the ECS approach, exemplified herein with DNA nanowires, is equally a suitable and time-dependent advantageous alternative for conductance measurement of molecular systems, additionally allowing better understanding of the alignment existing between molecular scale conductance and electron transfer rate.
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content type line 23
ISSN:2040-3364
2040-3372
DOI:10.1039/c6nr01076h