Dichotomous disorder model for single light-harvesting complexes
نویسندگان
چکیده
منابع مشابه
Divergent light-harvesting complexes
‡Current address: University of Washington, School of Oceanography, Box 357940, Seattle, WA 98195-7940, USA. †Co first authors. Approximately one-half of the total primary production on Earth occurs in the oceans [1]. Although hundreds of species contribute to oceanic productivity, members of two cyanobacterial genera – Prochlorococcus [2,3] and Synechococcus [4] – are responsible for a signifi...
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Photosynthetic systems harness sunlight to power most life on Earth. In the initial steps of photosynthetic light harvesting, absorbed energy is converted to chemical energy with near-unity quantum efficiency. This is achieved by an efficient, directional and regulated flow of energy through a network of proteins. Here, we discuss the following three key principles of this flow and of photosynt...
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Single light-harvesting complexes LH-2 from Rhodopseudomonas acidophila were immobilized on various charged surfaces under physiological conditions. Polarized light experiments showed that the complexes were situated on the surface as nearly upright cylinders. Their fluorescence lifetimes and photobleaching properties were obtained by using a confocal fluorescence microscope with picosecond tim...
متن کاملUltrafast energy relaxation in single light-harvesting complexes.
Energy relaxation in light-harvesting complexes has been extensively studied by various ultrafast spectroscopic techniques, the fastest processes being in the sub-100-fs range. At the same time, much slower dynamics have been observed in individual complexes by single-molecule fluorescence spectroscopy (SMS). In this work, we use a pump-probe-type SMS technique to observe the ultrafast energy r...
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ژورنال
عنوان ژورنال: Lithuanian Journal of Physics
سال: 2019
ISSN: 2424-3647,1648-8504
DOI: 10.3952/physics.v58i4.3876