Spectroscopy of single light-harvesting complexes from purple photosynthetic bacteria at 1.2 K

Article Abstract:

A study was conducted to characterize the fluorescence-excitation spectra of individual light-harvesting complexes from purple photosynthetic bacteria at 1.2 K. The excitation light was directed on the sample by a home built microscope or a lens. Polymer films were obtained by adding poly(vinyl alcohol) to a solution of light-harvesting complexes. Results indicated the effectiveness of single-molecule spectroscopy in characterizing the fluorescence-excitation spectra of light-harvesting complexes.

Analysis, Usage, Photosynthesis research, X-ray spectroscopy, Bacteria, Photosynthetic, Photosynthetic bacteria

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Temperature and free energy dependence on the direct charge recombination rate from the secondary quinone in bacterial reaction centres from Rhodobacter sphaeroides

Article Abstract:

Issues concerning the kinetics of the direct charge recombination from the secondary quinone Qb to the primary electron donor D are discussed. Further research is required for a full understanding of the differences in the charge recombination processes.

Quinone, Quinones

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