Abstract
The photosynthetic FMO complex is probed by femtosecond pump-probe spectroscopy and compared with a series of genetically modified mutants with distinct excitonic interactions. These experiments allow us to identify vibrational contributions to the coherence.
Highlights
We study the coherent oscillations in FMO complex by exploiting the combination of femtosecond spectroscopy and biological mutagenesis [5]
We report a pump-probe investigation of a series of FMO complexes, where site-mutagenesis enabled us to perturb the energies of selected chromophores, thereby changing their electronic interactions, and compare the generated coherences
Through a systematic comparison of the series of mutated FMO complexes measured under two excitation conditions and at two temperatures, we show that the strongest oscillations detected in our experiment are insensitive to mutagenesis, having similar frequencies and dephasing times in all of the pump-probe data
Summary
We study the coherent oscillations in FMO complex by exploiting the combination of femtosecond spectroscopy and biological mutagenesis [5]. We report a pump-probe investigation of a series of FMO complexes, where site-mutagenesis enabled us to perturb the energies of selected chromophores, thereby changing their electronic interactions, and compare the generated coherences. Through a systematic comparison of the series of mutated FMO complexes measured under two excitation conditions and at two temperatures, we show that the strongest oscillations detected in our experiment are insensitive to mutagenesis, having similar frequencies and dephasing times in all of the pump-probe data.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.