Vertical graphene nanoflakes for the immobilization, electrocatalytic oxidation andquantitative detection of DNA

N Shang, A Kumar, N Sun, S Sharma, P Papakonstantinou, MX Li, RA Blackley, W Zhou, LS Kalrsson, SRP Silva

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Vertical graphene nanoflake integrated films having a high density of edge planes have been used as an electrochemical platform to systematically investigate the immobilization, electrochemical oxidation kinetics and direct quantitative determination of native DNA. Consistently, both transmission electron microscopy and atomic force microscopy observations demonstrate the presence of a self-assembled monolayer of nativeDNA, immobilized on the graphene nanoflakes. Graphene shows excellent electrocatalytic activity for the electrooxidation of double stranded DNA, better than carbon nanotubes and glassy carbon, due to the abundance of electrocatalytic graphene edges present not only at the top but also along the sides of each graphene nanoflake.
LanguageEnglish
Pages140-143
JournalElectrochemistry Communications
Volume25
DOIs
Publication statusPublished - 1 Oct 2012

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Oxidation
DNA
Carbon Nanotubes
Electrooxidation
Electrochemical oxidation
Glassy carbon
Self assembled monolayers
Atomic force microscopy
Transmission electron microscopy
Kinetics

Cite this

Shang, N ; Kumar, A ; Sun, N ; Sharma, S ; Papakonstantinou, P ; Li, MX ; Blackley, RA ; Zhou, W ; Kalrsson, LS ; Silva, SRP. / Vertical graphene nanoflakes for the immobilization, electrocatalytic oxidation andquantitative detection of DNA. In: Electrochemistry Communications. 2012 ; Vol. 25. pp. 140-143.
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Vertical graphene nanoflakes for the immobilization, electrocatalytic oxidation andquantitative detection of DNA. / Shang, N; Kumar, A; Sun, N; Sharma, S; Papakonstantinou, P; Li, MX; Blackley, RA; Zhou, W; Kalrsson, LS; Silva, SRP.

In: Electrochemistry Communications, Vol. 25, 01.10.2012, p. 140-143.

Research output: Contribution to journalArticle

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AU - Shang, N

AU - Kumar, A

AU - Sun, N

AU - Sharma, S

AU - Papakonstantinou, P

AU - Li, MX

AU - Blackley, RA

AU - Zhou, W

AU - Kalrsson, LS

AU - Silva, SRP

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AB - Vertical graphene nanoflake integrated films having a high density of edge planes have been used as an electrochemical platform to systematically investigate the immobilization, electrochemical oxidation kinetics and direct quantitative determination of native DNA. Consistently, both transmission electron microscopy and atomic force microscopy observations demonstrate the presence of a self-assembled monolayer of nativeDNA, immobilized on the graphene nanoflakes. Graphene shows excellent electrocatalytic activity for the electrooxidation of double stranded DNA, better than carbon nanotubes and glassy carbon, due to the abundance of electrocatalytic graphene edges present not only at the top but also along the sides of each graphene nanoflake.

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