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A short description of two theories of the primary photosynthetic processes is given. Generally accepted in 1950s–1990s, the localized excited states theory has been changed to the modern exciton theory. Appearance of the new experimental data and the light-harvesting complex crystal structure are reasons why the exciton theory has become important. The bulk of data for the old theory and outstanding...
In this paper, we introduce the photo-induced ultrafast dynamics taking place in the peripheral light harvesting antenna LH2 from purple bacteria Rhodobacter sphaeroides by using absorption, fluorescence emission and ultrafast spectroscopic techniques. Three kinds of LH2 samples, pH treated LH2 (complete removal of B800 pigments), carotenoid mutated LH2 (GM 309) and electrochemical oxidation treated...
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