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

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Shang, N, Kumar, A, Sun, N, Sharma, S, Papakonstantinou, P, Li, MX, Blackley, RA, Zhou, W, Kalrsson, LS and Silva, SRP (2012) Vertical graphene nanoflakes for the immobilization, electrocatalytic oxidation andquantitative detection of DNA. Electrochemistry Communications, 25 . pp. 140-143. [Journal article]

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URL: http://www.sciencedirect.com/science/article/pii/S1388248112004092

DOI: 10.1016/j.elecom.2012.09.036

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.

Item Type:Journal article
Faculties and Schools:Faculty of Computing & Engineering
Faculty of Computing & Engineering > School of Engineering
Research Institutes and Groups:Engineering Research Institute
Engineering Research Institute > Nanotechnology & Integrated BioEngineering Centre (NIBEC)
ID Code:23726
Deposited By:Professor Pagona Papakonstantinou
Deposited On:31 Oct 2012 08:53
Last Modified:07 Apr 2014 10:05

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