title: Screen printed graphite macroelectrodes for the direct electron transfer of cytochrome c.
abstract: We report the direct electrochemistry of cytochrome c at screen printed graphite electrodes which exhibits quasi-reversible voltammetric responses without the need for any chemical or electrochemical pre-treatment, use of mediators or nanomaterials. Through voltammetric studies and X-ray photoelectron spectroscopy (XPS) it is shown that carbonyl and carboxylic surface oxygenated species likely residing at edge plane like- sites/defects of the graphite comprising the screen printed electrodes are responsible for the favourable interaction of the cytochrome c with that of the screen printed electrochemical sensing platform.
authors: Physical Chemistry Department, Institute of Electrochemistry, University of Alicante, San Vicente del Raspeig, Spain.
authors: Maria
authors: M
authors: Gómez-Mingot
authors: Jesús
authors: J
authors: Iniesta
authors: Vicente
authors: V
authors: Montiel
authors: Rashid O
authors: RO
authors: Kadara
authors: Craig E
authors: CE
authors: Banks
mesh_terms: D045304:Cytochromes c / Q000737:chemistry* / Q000378:metabolism; D055664:Electrochemical Techniques / Q000379:methods*; D004566:Electrodes; D004579:Electron Transport; D006108:Graphite / Q000737:chemistry*; D056951:Photoelectron Spectroscopy
chemical_list: D006108:Graphite; D045304:Cytochromes c