The photoexcitcd triplet states of chlorophyll a and b are studied by the EPR method at -85 K using modulated ii&t excitation. Both compounds show anomalous EPR line intensities and transient kinetics, indicating e!ectron spin polxi~ation (ESP) in the photoexcitcd triplet state. EPR studies, using h
โฆ LIBER โฆ
Determination of the population, depopulation and the anisotropic spin lattice relaxation rates in the photoexcited triplet state of phenazine. A light modulation-EPR study
โ Scribed by Uzi Eliav; Haim Levanon
- Publisher
- Elsevier Science
- Year
- 1975
- Tongue
- English
- Weight
- 409 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0009-2614
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It is shown that the spm-spin and spin-lattice relaxation rates in the lowest triplet state of aniline in a p-xylene host crystal are determmed by the presence of a close-lying local phonon state. It is concluded that the motion of the aniline molecule has a highly localised character.