Vertical graphene nanoflakes for the immobilization, electrocatalytic oxidation and quantitative detection of DNA
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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
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Official URL: http://dx.doi.org/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 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 |
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| 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 |
| Divisions: | Faculty of Engineering and Physical Sciences > Electronic Engineering > Advanced Technology Institute > Nano-Electronics Centre |
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| ID Code: | 738446 |
| Deposited By: | Symplectic Elements |
| Deposited On: | 11 Dec 2012 19:36 |
| Last Modified: | 16 Feb 2013 15:38 |
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