Abstract
Time- and spectrally-resolved picosecond fluorescence of light-harvesting antenna complexes B880, isolated from the membranes of the photosynthetic purple bacterium Rhodospirillum rubrum were studied over a wide temperature range from room temperature down to 4 K. At low temperatures, the kinetics are dependent on the fluorescence recording wavelength, analogous with the observation for chromatophores. The kinetics presumably reflect excitation transfer between different antenna complexes in the spectrally inhomogeneous antenna. An excitation lifetime in an antenna complex of the order of 10 ps, which is insensitive to temperature, was measured. This time seems to be characteristic of the “macroscopic” light excitation transfer in a broader class of photosynthetic systems.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Photochemistry & Photobiology, B: Biology
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
