Time-resolved CIDEP study of the photogenerated camphorquinone radical anion: a case of dual singlet and triplet precursors
Journal Article
·
· J. Phys. Chem.; (United States)
Photoreduction of camphorquinone in 2-propanol produced electron spin polarized camphorquinone radical anions. The time-resolved electron spin resonance spectra of the spin-polarized radical anions provided the first evidence of dual singlet and triplet precursors in the CIDEP phenomenon. With the results from fluorescence quenching experiments, the time dependence of the CIDEP spectra can be accounted for qualitatively by the changes of the relative contributions to the polarization among the singlet pair, F and triplet pairs, and the triplet mechanisms.
- Research Organization:
- Queen's Univ., Kingston, Ontario
- OSTI ID:
- 6952120
- Journal Information:
- J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 90:25; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
400500* -- Photochemistry
ANIONS
AROMATICS
CAMPHOR
CHARGED PARTICLES
CHEMICAL REACTIONS
CHEMISTRY
DATA
DE-EXCITATION
ELECTRON SPIN RESONANCE
ENERGY TRANSFER
ENERGY-LEVEL TRANSITIONS
EXPERIMENTAL DATA
INFORMATION
IONS
KETONES
MAGNETIC RESONANCE
MULTIPLETS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORIENTATION
PHOTOCHEMICAL REACTIONS
PHOTOCHEMISTRY
QUINONES
RADIATIONLESS DECAY
RADICALS
REDUCTION
RESONANCE
SPIN ORIENTATION
TERPENES
TIME DEPENDENCE
TRIPLETS
400201 -- Chemical & Physicochemical Properties
400500* -- Photochemistry
ANIONS
AROMATICS
CAMPHOR
CHARGED PARTICLES
CHEMICAL REACTIONS
CHEMISTRY
DATA
DE-EXCITATION
ELECTRON SPIN RESONANCE
ENERGY TRANSFER
ENERGY-LEVEL TRANSITIONS
EXPERIMENTAL DATA
INFORMATION
IONS
KETONES
MAGNETIC RESONANCE
MULTIPLETS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORIENTATION
PHOTOCHEMICAL REACTIONS
PHOTOCHEMISTRY
QUINONES
RADIATIONLESS DECAY
RADICALS
REDUCTION
RESONANCE
SPIN ORIENTATION
TERPENES
TIME DEPENDENCE
TRIPLETS