Ultrafast Energy‐Transfer Pathway in a Purple‐Bacterial Photosynthetic Core Antenna, as Revealed by Femtosecond Time‐Resolved Spectroscopy

This is the authors' abstract. We don't add key points for this paper.

Reaping a good light harvest: Femtosecond spectroscopy uncovered a novel pathway of singlet–singlet excitation-energy transfer (EET) from bacteriochlorophyll (Bchl) in a purple bacterium to the carotenoid spirilloxanthin (Spx) upon the excitation of Bchl into the Qx band (see picture). This pathway was also clearly identified in steady-state fluorescence excitation spectra, but only in the presence of Spx. IC=internal conversion.