Journal
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
Volume 621, Issue 2, Pages 129-133Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jelechem.2007.07.026
Keywords
TEMPO center dot; Reorganization energy; Standard rate constant; Transfer coefficient; Self-assembled monolayers
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4-Amino-TEMPO center dot is attached to a self-assembled monolayers of HS(CH2)(10)COOH on gold electrodes and the kinetics of the TEMPO center dot/TEMPO+ redox couple are measured over a wide range of scan rates in 1 M H2SO4. Analysis of the rate constants yields the standard rate constant (1.2 s(-1)) and the reorganization energies for TEMPO center dot (1.5 eV) and TEMPO+ (1.3 eV). These values are the first experimental measurements of reorganization energies of TEMPO center dot in aqueous solution. 2007 Elsevier B.V. All rights reserved.
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