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2010
Journal Article
Titel
Diamond nanotextured surfaces for enhanced protein redox activity
Abstract
A nanotextured diamond electrode was utilized to achieve optimized electrochemical redox-interactions of cytochrome c (cyt c) with the diamond transducer. The nanotextured surface was realized using a top-down technology where diamond nanoparticles are used as etching masks. Macroscopic characterizations of the OH-terminated surface using cyclic voltammetry reveal adsorption-controlled cyt c/electrode interaction. The adsorption is assigned to the electrostatic attraction force of positively charged cyt c parts with the slightly negatively charged diamond surface in pH 7 buffer. Atomic force microscopy experiments in physiologic buffer solutions on flat diamond surface confirms the adsorption of cyt c on OHterminated diamond surfaces without structural changes of cyt c.
Author(s)