Singlet-triplet Fission of Carotenoid Excitation in the Purple Phototrophic Bacteria Thermochromatium tepidum
- Authors: Klenina I.B.1, Gryaznov A.A.1, Makhneva Z.K.1, Proskuryakov I.I.1
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Affiliations:
- IBBP RAS
- Issue: Vol 485, No 1 (2019)
- Pages: 135-137
- Section: Biochemistry, Biophysics, and Molecular Biology
- URL: https://journal-vniispk.ru/1607-6729/article/view/212933
- DOI: https://doi.org/10.1134/S1607672919020169
- ID: 212933
Cite item
Abstract
Singlet fission of carotenoid excitation is studied in purple phototrophic bacterium Thermochromatium tepidum. Using time-resolved EPR and magnetic field-induced modulation of fluorescence yield it is shown that the concept of intramolecular excitation fission developed in a number of publications is not supported by the experimental results. The obtained data favor intermolecular fission mechanism involving two carotenoid molecules.
About the authors
I. B. Klenina
IBBP RAS
Email: pros@issp.serpukhov.su
Russian Federation, Pushchino, Moscow oblast, 142290
A. A. Gryaznov
IBBP RAS
Email: pros@issp.serpukhov.su
Russian Federation, Pushchino, Moscow oblast, 142290
Z. K. Makhneva
IBBP RAS
Email: pros@issp.serpukhov.su
Russian Federation, Pushchino, Moscow oblast, 142290
I. I. Proskuryakov
IBBP RAS
Author for correspondence.
Email: pros@issp.serpukhov.su
Russian Federation, Pushchino, Moscow oblast, 142290
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