Microelectrochemistry and Measurement of the Diffusivity of Oxidized and Reduced Horse Heart Cytochrome c
Abstract
Microelectrochemical methods are shown to be useful in determining the diffusivity of biological redox molecules. The electrochemistry of both ferri- and ferrocytochrome c has been examined at a microelectrode array using bis(4-pyridyl) ethylene as an electrocatalyst. Sigmoidal current-voltage scans are observed in the cyclic voltammometry typical of the cylindrical diffusion-limited response found for reversible redox couples at microelectrodes. The arrays used consist of eight gold electrodes. Steady-state and transient microeletrochemical techniques have been used to measure the diffusivity of horse heart ferri- and ferrocytochrome c in solution. Biology, Sedimentation rates. (jes)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1989
- Accession Number
- ADA214207
Entities
People
- Mark S. Wrighton
- Stuart Licht
- Vince Cammarata
Organizations
- Massachusetts Institute of Technology