Dynamics of the cage effect in recombination of radical pairs originating in the triplet state. Effect of a magnetic field

Journal Article · Sat Nov 01 04:00:00 EST 1986 · Dokl. Phys. Chem. (Engl. Transl.); (United States)

OSTI ID:5795169

Levin, P P; Khudyakov, I V; Kuz'min, V A

The kinetics of recombination of radical pairs formed in transfer of a hydrogen atom from p-cresol and aniline to the triplet of benzophenone were studied in a pulsed laser photolysis system based on a nitrogen laser with a recording system resolving time of 10 nanoseconds. The dynamics of the cage effect in recombination of the radical pairs arising in the triplet state were recorded. The magnitude of the cage effect was found to increase with a decrease in the solution temperature. It was found necessary to consider the effects of proximity for a quantitative theoretical description of geminal recombination. Application of an external magnetic field was found to retard recombination. The magnetic effects should apparently be considered within the framework of a relaxation mechanism of spin dynamics.

• Research Organization: Institute of Chemical Physics, Moscow, USSR
• OSTI ID: 5795169
• Journal Information: Dokl. Phys. Chem. (Engl. Transl.); (United States), Journal Name: Dokl. Phys. Chem. (Engl. Transl.); (United States) Vol. 288:1-3; ISSN DKPCA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
640304 -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTION SPECTRA
AMINES
ANILINE
AROMATICS
BENZOPHENONE
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COLLISIONS
CRESOLS
DECOMPOSITION
DIFFUSION
ELECTROMAGNETIC RADIATION
ELECTRON TRANSFER
ENERGY-LEVEL TRANSITIONS
HYDROGEN TRANSFER
HYDROXY COMPOUNDS
IONIZATION
KETONES
KINETICS
LASER RADIATION
MAGNETIC FIELDS
MOLECULE COLLISIONS
MULTIPLETS
ORGANIC COMPOUNDS
PHENOLS
PHOTOCHEMICAL REACTIONS
PHOTOIONIZATION
PHOTOLYSIS
PHOTON COLLISIONS
PHOTON-MOLECULE COLLISIONS
RADIATIONS
RADICALS
REACTION KINETICS
RECOMBINATION
RELAXATION
SPECTRA
SPIN-SPIN RELAXATION
TRAPPING
TRIPLETS