One-electron redox potentials and rate of electron transfer in aqueous micellar solution. Partially solubilized quinones
Journal Article
·
· J. Phys. Chem.; (United States)
The electron transfer equilibrium between AQS/AQS/sup -/ and DQ/DQ/sup -/ (where AQS is sodium 9,10-arthraquinone-2-sulfonate and DQ, duroquinone) has been studied by pulse radiolysis in aqueous micellar solutions of sodium lauryl sulfate. The equilibrium constant is changed as would be expected if AQS, AQS/sup -/, and DQ- were all mainly in the aqueous solution, and DQ distributed between the micelles and the aqueous phase with a distribution constant of K/sub D//N = 150 M/sup -1/, in agreement with the independently determined value of this constant. The kinetics of the equilibration show, however, that electron transfer at the micelle surface is important, indicating that also AQS and DQ/sup -/ are associated with the micelle to some extent. With reasonable assumptions regarding the distribution constants of these species (that have some independent support), the observed catalytic effect of the micelles on the electron transfer from DQ/sup -/ to AQS can be understood.
- Research Organization:
- Univ. of Notre Dame, IN
- OSTI ID:
- 5522638
- Journal Information:
- J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Journal Issue: 25 Vol. 83:25; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400600* -- Radiation Chemistry
550200 -- Biochemistry
59 BASIC BIOLOGICAL SCIENCES
AROMATICS
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
DATA
DATA FORMS
DECOMPOSITION
ELECTRON TRANSFER
EXPERIMENTAL DATA
INFORMATION
IRRADIATION
ISOLATED VALUES
MICELLAR SYSTEMS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PULSED IRRADIATION
QUINONES
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIOLYSIS
400600* -- Radiation Chemistry
550200 -- Biochemistry
59 BASIC BIOLOGICAL SCIENCES
AROMATICS
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
DATA
DATA FORMS
DECOMPOSITION
ELECTRON TRANSFER
EXPERIMENTAL DATA
INFORMATION
IRRADIATION
ISOLATED VALUES
MICELLAR SYSTEMS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PULSED IRRADIATION
QUINONES
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIOLYSIS