Electron transfer from nucleophilic species to N,N,N prime ,N prime -tetramethylbenzidine cation in micellar media: Effect of interfacial electrical potential on cation decay
Journal Article
·
· Journal of Physical Chemistry; (USA)
- Universite Paris-Sud, Orsay (France)
Electron-transfer reaction between N,N,N{prime},N{prime}-tetramethylbenzidine cation (TMB{sup +}) and neutral nucleophiles, pyridine (Py) and triethylamine (Et{sub 3}N), is studied in NaLS micellar media. A biphasic decay of TMB{sup +} follows the laser-induced TMB photoionization. The very fast decay is attributed to an electron transfer between reactants located in the core of the micelle. The slow decay would correspond to an electron transfer from the nucleophile solubilized in the aqueous phase to TMB{sup +} embedded in the lipidic phase. The role of the electrical interfacial potential {Delta}{psi} is evidenced. The rate constant of the TMB{sup +} slow decay displays an exponential function of {Delta}{psi}. The effect of the localization and distance of the reactants is emphasized.
- OSTI ID:
- 6619514
- Journal Information:
- Journal of Physical Chemistry; (USA), Journal Name: Journal of Physical Chemistry; (USA) Vol. 94:2; ISSN 0022-3654; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360603 -- Materials-- Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
AMINES
AROMATICS
BENZIDINE
CHEMISTRY
DATA
DATA ANALYSIS
ELECTRON TRANSFER
EXPERIMENTAL DATA
INFORMATION
INTERFACES
MEASURING INSTRUMENTS
MEASURING METHODS
MICELLAR SYSTEMS
NUMERICAL DATA
ORGANIC COMPOUNDS
PHOTOCHEMISTRY
SURFACTANTS
360603 -- Materials-- Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
AMINES
AROMATICS
BENZIDINE
CHEMISTRY
DATA
DATA ANALYSIS
ELECTRON TRANSFER
EXPERIMENTAL DATA
INFORMATION
INTERFACES
MEASURING INSTRUMENTS
MEASURING METHODS
MICELLAR SYSTEMS
NUMERICAL DATA
ORGANIC COMPOUNDS
PHOTOCHEMISTRY
SURFACTANTS