Superradiance of bacteriochlorophyll c aggregates in chlorosomes of green photosynthetic bacteria.

ABSTRACT: Chlorosomes are the main light-harvesting complexes of green photosynthetic bacteria that are adapted to a phototrophic life at low-light conditions. They contain a large number of bacteriochlorophyll c, d, or e molecules organized in self-assembling aggregates. Tight packing of the pigments results in strong excitonic interactions between the monomers, which leads to a redshift of the absorption spectra and excitation delocalization. Due to the large amount of disorder present in chlorosomes, the extent of delocalization is limited and further decreases in time after excitation. In this work we address the question whether the excitonic interactions between the bacteriochlorophyll c molecules are strong enough to maintain some extent of delocalization even after exciton relaxation. That w

SUBMITTER: Malina T 

PROVIDER: S-EPMC8052352 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature