Accession Number : ADA292794
Title : Consequences of Kinetic Dispersion on the Electrochemistry of an Adsorbed Redox-Active Monolayer.
Descriptive Note : Interim technical rept.,
Corporate Author : NORTH CAROLINA UNIV AT CHAPEL HILL DEPT OF CHEMISTRY
Personal Author(s) : Rowe, Gary K. ; Carter, Michael T. ; Richardson, John N. ; Murray, Royce W.
PDF Url : ADA292794
Report Date : 01 APR 1995
Pagination or Media Count : 49
Abstract : Mixed monolayers of (ferrocenylcarboxy)-alkanethiol/n-alkanethiol have been investigated electrochemically in 2:1 (v:v) chloroethane:butyronitrile solvent in the temperature range of 120K to 150K. Cyclic voltammetry of these monolayers shows large oxidation-reduction peak potential separations indicative of electron transfer rate control. The voltammetric waveshapes are also broadened; this and curved logI vs. time transients observed in potential step experiments are interpreted as a dispersion in the reaction rates of the ferrocene sites. This paper considers origins and three models for such kinetic dispersion. jg
Descriptors : *DISPERSING, *ADSORPTION, *ELECTROCHEMISTRY, *KINETICS, *OXIDATION REDUCTION REACTIONS, *FERROCENES, CONTROL, TRANSIENTS, TEMPERATURE, LAYERS, REACTION TIME, SITES, RATES, CYCLES, ALKANES, CHEMICAL REACTIONS, ORGANIC COMPOUNDS, SOLVENTS, MIXING, ELECTRON TRANSFER, VOLTAMMETRY, CHLOROETHANES.
Subject Categories : Physical Chemistry
Solid State Physics
Distribution Statement : APPROVED FOR PUBLIC RELEASE