Carotenoids are accessory pigments in photosynthesis that serve a range of functions such
as light harvesting, photoprotection, and structural stabilization. Such versatility is enabled …

The excitation energy transfer (EET) from the bacteriochlorophyll (BChl) Soret band to the
second excited state (s)(S2) of carotenoids in pigment–protein complexes of purple bacteria …

Ultrafast excited state dynamics of spirilloxanthin in solution and bound to the light-
harvesting core antenna complexes from Rhodospirillum rubrum S1 were investigated by …

We investigate the nature of the S* excited state in carotenoids by performing a series of
pump–probe experiments with sub-20 fs time resolution on spirilloxanthin in a polymethyl …

Pathways of intramolecular conversion and intermolecular electronic excitation energy
transfer (EET) in the photosynthetic apparatus of purple bacteria remain subject to debate …

Results The principles of absorption redistribution The fundamental principle that motivates
both theory and experiment in this work is illustrated in Fig. 1A. Light absorption in …