Direct electrochemistry of cytochrome C at nanocrystalline boron-doped diamond.
Direct electron transfer of horse heart cytochrome c is measured at a nanocrystalline boron-doped diamond thin-film electrode. A quasi-reversible, diffusion-controlled cyclic voltammetric response is observed for untreated diamond. The peak currents change linearly with the concentration, and importantly, there is no electrode fouling. The results, observed for a hydrogen-terminated and uncharged surface, (i.e., no ionizable carbon-oxygen functional groups), raise interesting questions about the necessary surface interactions of cytochrome c for relatively rapid electrode kinetics.
Haymond
Shannon
S
Michigan State University, Department of Chemistry, East Lansing, MI 48824-1322, USA.
Babcock
Gerald T
GT
Swain
Greg M
GM
D001895:Boron / Q000737:chemistry*; D003574:Cytochrome c Group / Q000737:chemistry*; D004563:Electrochemistry / Q000379:methods; D004566:Electrodes; D007700:Kinetics; D036103:Nanotechnology
D003574:Cytochrome c Group; D001895:Boron