University of Surrey

Test tubes in the lab Research in the ATI Dance Research

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

Shang, N, Kumar, A, Sun, N, Sharma, S, Papakonstantinou, P, Li, M, Blackley, RA, Zhou, W, Karlsson, LS and Silva, SRP (2012) Vertical graphene nanoflakes for the immobilization, electrocatalytic oxidation and quantitative detection of DNA ELECTROCHEMISTRY COMMUNICATIONS, 25. 140 - 143. ISSN 1388-2481

Available under License : See the attached licence file.

Download (355Kb)
PDF (licence)

Download (32Kb)


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 native DNA, 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. © 2012 Elsevier B.V.

Item Type: Article
Additional Information: NOTICE: this is the author’s version of a work that was accepted for publication in Electrochemistry Communications. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Electrochemistry Communications, 25(1), November 2012, DOI 10.1016/j.elecom.2012.09.036.
Uncontrolled Keywords: Science & Technology, Physical Sciences, Electrochemistry, Graphene nanoflake, DNA, Electrocatalytic oxidation, AFM, TEM, GLASSY-CARBON ELECTRODES, ELECTROCHEMICAL OXIDATION, NUCLEIC-ACIDS, GRAPHITE ELECTRODE, SENSORS, ELECTROOXIDATION, POLYPYRROLE, NANOTUBES, BEHAVIOR, OXIDE
Related URLs:
Divisions: Faculty of Engineering and Physical Sciences > Electronic Engineering > Advanced Technology Institute > Nano-Electronics Centre
Depositing User: Symplectic Elements
Date Deposited: 11 Dec 2012 19:36
Last Modified: 23 Sep 2013 19:52

Actions (login required)

View Item View Item


Downloads per month over past year

Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800