One-electron redox potentials of phenols in aqueous solution
- Boston Univ., MA (United States). Dept. of Chemistry
The oxidation peak potentials (E{sub p}) of 31 phenolate, chlorophenolate, and other para-substituted phenolate ions were measured as a function of scan rate, substrate concentration, and pH by cyclic voltammetry in aqueous solution. The one-electron reduction potentials (E{sub red}{degree}) of the phenoxyl radical/phenolate ion couples were evaluated from E{sub p} and the rate constants for dimerization of the phenoxyl radicals. The dependence of E{sub red}{degree} on pH was established, and the relationships that connect E{sub red}{degree} with the brown {sigma}{sup +} constant, the pK{sub a} values of the phenols and the protonated phenoxyl radical cations, and the reduction potentials of the protonated radicals were explored.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- OSTI ID:
- 691309
- Journal Information:
- Journal of Physical Chemistry B: Materials, Surfaces, Interfaces, amp Biophysical, Journal Name: Journal of Physical Chemistry B: Materials, Surfaces, Interfaces, amp Biophysical Journal Issue: 32 Vol. 103; ISSN 1089-5647; ISSN JPCBFK
- Country of Publication:
- United States
- Language:
- English
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