Photosensitized electron-transfer reaction in the first excited singlet state of a polymethine-cyanine dye
Journal Article
·
· J. Phys. Chem.; (United States)
The electron transfer from the first excited singlet state of a polymethine-cyanine dye, 3,3'-diethyloxadicarbocyanine iodide (DODCI), to methylviologen leads to redox products, which have been fully characterized by using an electron acceptor, p-benzoquinone (p-BQ), and an electron donor, ascorbic acid. The quantum yields of the redox products have been measured by using the DODCI photoisomerization process as an internal actinometer. A complete reaction scheme is proposed and the various reaction rate constants have been determined. The photosystem DODCI-MVCl/sub 2/-p-BQ-ascorbic acid is presented as a new system for the modeling of solar energy conversion.
- Research Organization:
- CNRS, Gif-s-Yvette, France
- OSTI ID:
- 6135532
- Journal Information:
- J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 91:13; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
14 SOLAR ENERGY
140505 -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
ABSORPTION SPECTROSCOPY
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISTRY
CYANINE DYES
DATA
DYES
EFFICIENCY
ELECTRON TRANSFER
ENERGY LEVELS
EXCITED STATES
EXPERIMENTAL DATA
INFORMATION
KINETICS
NUMERICAL DATA
PHOTOCHEMICAL REACTIONS
PHOTOCHEMISTRY
PHOTOSENSITIVITY
QUANTUM EFFICIENCY
REACTION KINETICS
SENSITIVITY
SPECTROSCOPY
140505 -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
ABSORPTION SPECTROSCOPY
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISTRY
CYANINE DYES
DATA
DYES
EFFICIENCY
ELECTRON TRANSFER
ENERGY LEVELS
EXCITED STATES
EXPERIMENTAL DATA
INFORMATION
KINETICS
NUMERICAL DATA
PHOTOCHEMICAL REACTIONS
PHOTOCHEMISTRY
PHOTOSENSITIVITY
QUANTUM EFFICIENCY
REACTION KINETICS
SENSITIVITY
SPECTROSCOPY