Communication: Coherences observed in vivo in photosynthetic bacteria using two-dimensional electronic spectroscopy.

ABSTRACT: Energy transfer through large disordered antenna networks in photosynthetic organisms can occur with a quantum efficiency of nearly 100%. This energy transfer is facilitated by the electronic structure of the photosynthetic antennae as well as interactions between electronic states and the surrounding environment. Coherences in time-domain spectroscopy provide a fine probe of how a system interacts with its surroundings. In two-dimensional electronic spectroscopy, coherences can appear on both the ground and excited state surfaces revealing detailed information regarding electronic structure, system-bath coupling, energy transfer, and energetic coupling in complex chemical systems. Numerous studies have revealed coherences in isolated photosynthetic pigment-protein complexes, but these coh

SUBMITTER: Dahlberg PD 

PROVIDER: S-EPMC4567573 | biostudies-literature | 2015 Sep

REPOSITORIES: biostudies-literature