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Temperature and Overpotential Dependence of Long‐Range Electron Transfer across a Self‐Assembled Monolayer with Pendant Ruthenium Redox Centers
20
Citations
32
References
1997
Year
EngineeringDiluent ThiolChemistryReorganization EnergyCharge TransportCharge Carrier TransportElectrode Reaction MechanismMaterials ScienceOverpotential DependenceLong‐range Electron TransferNanotechnologySurface ElectrochemistryMolecular ElectrochemistryPhysical ChemistryLayered MaterialElectrochemistrySurface ScienceApplied PhysicsElectroactive ThiolSelf‐assembled MonolayerElectrochemical Surface Science
Abstract Mixed monolayers containing an electroactive thiol, HS(CH 2 ) 15 CONHCH 2 pyRu(NH 3 ) 5 2+/3+ , and a diluent thiol, HS(CH 2 ) 15 COOH, on gold electrodes are examined in acetonitrile electrolyte (0.1 M LiClO 4 ) as a function of overpotential and temperature. Kinetic and thermodynamic parameters from ca. −45 to +20 °C are obtained by cyclic voltammetry and chronoamperometry. Reorganization energies obtained from Tafel plots and Arrhenius plots both yield a reorganization energy of 0.8 eV for the redox centers.
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