Science Daily May 3, 2023 Bose-Einstein condensation of excitons enables frictionless energy transfer, but typically occurs under extreme conditions in highly ordered materials, such as graphene double layers. Photosynthetic light-harvesting complexes demonstrate extremely efficient transfer of energy in disordered systems under ambient conditions. Researchers at the University of Chicago established a link between the two phenomena by investigating the potential for exciton-condensate-like amplification of energy transport in room-temperature light harvesting. Using a model of the Fenna-Matthews-Olson complex and accounting for intrachromophore electron correlation explicitly through the addition of multiple sites to the individual chromophores, they observed amplification of the exciton […]
Tag Archives: Energy transport
Transporting energy through a single molecular nanowire
EurekAlert May 8, 2020 In the light-harvesting complexes of bacteria or plants, light is converted into energy, which is then transported to the reaction centre with minimal losses. To improve the energy transport efficiency an international team of researchers (Germany, the Netherlands) show how the excited-state energy landscape and thus the coherence characteristics of electronic excitations can be modified by the hierarchical level of H-type supramolecular architectures. They visualize, at room temperature, long-range incoherent transport of delocalized singlet excitons on pico- to nanosecond time scales in single supramolecular nanofibers and bundles of nanofibers. Increasing the degree of coherence enhances exciton […]