Data from two dimensional electronic spectroscopy showing that photosynthesis tunes quantum-mechanical mixing of electronic and vibrational states to steer exciton energy transfer

Jacob Higgins, Lawson Lloyd, Sara Sohail, Marco Allodi, John Otto, Rafael Saer, Ryan Wood, Sara Massey, Po-Chieh Ting, Robert Blankenship & Gregory Engel
Raw data from an ultrafast two dimensional electronic spectrometer investigating a series of mutants from the Fenna-Matthews Olson photosynthetic complex from Chlorobaculum tepidum is included here. This data was analyzed and reduced using the enclosed matlab scripts to show that this complex responds to changing oxidation conditions by breaking a resonance between a gap between electronic states and an attendant vibration within the bacteriochlorophyll molecules. Breaking this resonance steers energy differently through the complex and...
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