Biointerfacial Property of Plasma-Treated Single-Walled Carbon Nanotube Film Electrodes for Electrochemical Biosensors
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概要
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The single-walled carbon nanotube (SWCNT)-based thin film was spray-coated on the Pt support and functionalized using O2 plasma. The effects of plasma treatment on the biointerfacial properties of the SWCNT films were analyzed by cyclic voltammogram (CV), electrochemical impedance spectroscopy (EIS), and differential pulse voltammetry (DPV). The plasma-functionalized (pf) SWCNT electrodes modified with Legionella pneumophila-specific probe DNA strands showed a much higher peak current and a smaller peak separation in differential pulse voltammetry and a lower charge transfer resistance, compared to the untreated samples. These results suggest that the pf-SWCNT films have a better electrocatalytic character and an electron transfer capability faster than the untreated SWCNTs, due to the fact that the oxygen-containing functional groups promote direct electron transfer in the biointerfacial region of the electrocatalytic activity of redox-active biomolecules.
- 2013-01-25
著者
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Park Eun
Department Of Anatomy And Cell Biology College Of Veterinary Medicine And School Of Agricultural Bio
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Min Nam
Department of Biomicrosystem Technology, Korea University, Seoul 136-701, Korea
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Lee Jun-Yong
Department of Biomicrosystem Technology, Korea University, Seoul 136-701, Korea
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Kim Joon
Department of Applied Chemistry, College of Engineering, Seoul National University
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Jin Joon-Hyung
Department of Electrical Engineering, Korea University, Seoul 136-701, Republic of Korea
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Jin Joon-Hyung
Department of Biomicrosystem Technology, Korea University, Seoul 136-701, Republic of Korea
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