Possibility of the determination of tunneling parameters from experimental data on photoinduced electron transfer
The author proposes a simple method for determining the parameters (a and v) in the expression for the dependence of the tunneling probability (w) on the distance (r) between reactants (w=v exp (-2r/a)) for reactions involving tunneling electron transfer from electronically excited donor molecules to acceptor additions from experimental data on the photogeneration of radical ions. The method presented is based on the study of the dependence of the concentration of the unionized donor particles on the irradiation time. The method has been used to determine the tunneling parameters for photoinduced electron transfer from zinc and magnesium porphyrins to CCL/sub 4/ in glassy alcoholic matrices at 77 degrees K.
- Research Organization:
- Institute of Chemical Physics, Academy of Sciences of the USSR
- OSTI ID:
- 5445358
- Journal Information:
- High Energy Chem. (Engl. Transl.); (United States), Vol. 19:5
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CARBON TETRACHLORIDE
ELECTRON TRANSFER
PHOTOIONIZATION
MAGNESIUM COMPOUNDS
PORPHYRINS
ZINC COMPOUNDS
ALCOHOLS
BINDING ENERGY
CHEMICAL REACTION KINETICS
EXCITED STATES
KINETIC EQUATIONS
ORGANOMETALLIC COMPOUNDS
PHOTOEMISSION
PHOTOLUMINESCENCE
RECOMBINATION
VALENCE
ALKALINE EARTH METAL COMPOUNDS
CARBOXYLIC ACIDS
CHLORINATED ALIPHATIC HYDROCARBONS
EMISSION
ENERGY
ENERGY LEVELS
EQUATIONS
HALOGENATED ALIPHATIC HYDROCARBONS
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
HYDROXY COMPOUNDS
IONIZATION
KINETICS
LUMINESCENCE
ORGANIC ACIDS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
REACTION KINETICS
SECONDARY EMISSION
640304* - Atomic
Molecular & Chemical Physics- Collision Phenomena
400500 - Photochemistry