Characterization of Sub-Micron Sized Carbon Electrodes Insulated with a Phenol-Allylphenol Copolymer
PENNSYLVANIA STATE UNIV UNIVERSITY PARK DEPT OF CHEMISTRY
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By carefully controlling the copolymerization of phenol and 2- allylphenol onto the outsides of flame etched carbon fibers, a method to construct voltammetric probes with overall physical dimensions as small as 400 nm has been developed. The primary factors controlling the formation of a thin, yet insulating film are relative monomer concentration, polymer electrodeposition time, and electrodeposition solution pH. Optimal conditions for this procedure involve electrodeposition for 12 to 14 min in 60 mM phenol and 90 mM 2-allylphenol pH 9.0. Success rates for construction of electrodes with total structural tip diameters below 1.5 micro is approximately 70, and for construction of electrodes with approximately 400 nm tip diameters it is about 10. submicron carbon electrodes, flame etched carbon fibers.
- Organic Chemistry
- Test Facilities, Equipment and Methods
- Electricity and Magnetism