| Autor: |
Borovykh, I. V., Kulik, L. V., Dzuba, S. A., Hoff, A. J. |
| Zdroj: |
The Journal of Physical Chemistry - Part B; November 2002, Vol. 106 Issue: 46 p12066-12071, 6p |
| Abstrakt: |
A strong out-of-phase stimulated electron spin−echo is observed for the QA- radical in the spin-correlated triplet-radical pair 3PQA- in photosynthetic bacterial reaction centers. The formation of this echo is shown to be induced by spin polarization of QA- and by decay of the triplet state. The out-of-phase and in-phase echoes show deep envelope modulation induced by electron−electron dipole interaction between the partners in the pair. The analysis of this modulation provides dipolar frequencies. The interspin distance in 3PQA- is shown to be the same as in the radical pair P+QA-. This new type of experiment appears to be widely applicable for the study of chemical reactions and intermolecular distances in solids. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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