Zinc prophyrin sensitized reduction of simple and functional quinones in micellar systems

Journal Article · Tue Jan 01 04:00:00 EST 1980 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100451a016· OSTI ID:6800402

Pileni, M P; Graetzml, M

The photoinduced reduction of duroquinone (DQ) and a long-chain substituted duroquinone (C/sub 11/DQ) by zinc porphyrin was studied by means of laser photolysis techniques in micellar solution. The mean time required for intramicellar electron transfer is 0.2 ..mu..s for DQ and C/sub 11/DQ. Quenching through intermicellar migration of the acceptor occurs only in the case of DQ for which the rates of entry and exit into and from the micelle are 5 x 10/sup 10/ M/sup -1/ s/sup -1/ and 6 x 10/sup 5/ s/sup -1/. C/sub 11/DQ is immobilized by the long chain in the micelle and migration does not occur on a millesecond time scale. Partial charge separation is achieved in the case of C/sub 11/DQ through ejection of the cation from the micelle.

• Research Organization: Ecole Polytechnique Federale, Lausanne, Switzerland
• OSTI ID: 6800402
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 84; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140505 -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
AROMATICS
CARBOXYLIC ACIDS
CATALYSIS
CHEMICAL REACTIONS
CHEMISTRY
COMPLEXES
CONVERSION
ELECTRON TRANSFER
ENERGY CONVERSION
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
MICELLAR SYSTEMS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANOMETALLIC COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOCHEMISTRY
PORPHYRINS
QUINONES
REAGENTS
REDOX REACTIONS
REDUCTION
SENSITIZERS
SOLAR ENERGY CONVERSION
ZINC COMPLEXES