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
      Organic Chemistry
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE