Photoinduced electron transfer in meso-triphenyltriptycenylporphyrin-quinones. Restricting donor-acceptor distances and orientations
Journal Article
·
· J. Am. Chem. Soc.; (United States)
Studies of model systems possessing well-defined donor-acceptor distances and geometries were used to evaluate the role of these parameters in the determination of the efficiency of photoinduced charge separation. Three prophyrin-quinones and their Zn derivatives were used in these studies. Their preparation is described. Data obtained for the redox potentials and ground-state absorption and fluorescence emission spectroscopy show that pi-stacked geometries are not necessary for rapid, efficient electron-transfer quenching of prophyrin singlet states. For the model systems used, photoinduced electron-transfer reactions remain sensitive to both the exothermic status of the electron transfer and the dielectric properties of the medium.
- Research Organization:
- Argonne National Lab., IL
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 6455424
- Journal Information:
- J. Am. Chem. Soc.; (United States), Journal Name: J. Am. Chem. Soc.; (United States) Vol. 106:17; ISSN JACSA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400 -- Electrochemistry
400500* -- Photochemistry
ABSORPTION SPECTROSCOPY
ADDUCTS
AROMATICS
CARBOXYLIC ACIDS
CHEMISTRY
COMPLEXES
CORRELATIONS
DATA
DATA ANALYSIS
DIELECTRIC PROPERTIES
ELECTRICAL PROPERTIES
ELECTRON TRANSFER
ELECTRONIC STRUCTURE
EMISSION SPECTROSCOPY
ENERGY
EXPERIMENTAL DATA
FREE ENERGY
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
INFORMATION
ION PAIRS
MATHEMATICAL MODELS
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PHOTOCHEMISTRY
PHYSICAL PROPERTIES
PORPHYRINS
QUINONES
REDOX POTENTIAL
SOLVENT PROPERTIES
SPECTROSCOPY
THERMODYNAMIC PROPERTIES
VOLTAMETRY
ZINC COMPLEXES
400400 -- Electrochemistry
400500* -- Photochemistry
ABSORPTION SPECTROSCOPY
ADDUCTS
AROMATICS
CARBOXYLIC ACIDS
CHEMISTRY
COMPLEXES
CORRELATIONS
DATA
DATA ANALYSIS
DIELECTRIC PROPERTIES
ELECTRICAL PROPERTIES
ELECTRON TRANSFER
ELECTRONIC STRUCTURE
EMISSION SPECTROSCOPY
ENERGY
EXPERIMENTAL DATA
FREE ENERGY
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
INFORMATION
ION PAIRS
MATHEMATICAL MODELS
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PHOTOCHEMISTRY
PHYSICAL PROPERTIES
PORPHYRINS
QUINONES
REDOX POTENTIAL
SOLVENT PROPERTIES
SPECTROSCOPY
THERMODYNAMIC PROPERTIES
VOLTAMETRY
ZINC COMPLEXES