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Donatas Zigmantas. Portrait.

Donatas Zigmantas

Professor

Donatas Zigmantas. Portrait.

Exciton Structure and Energy Transfer in the Fenna-Matthews-Olson Complex

Author

  • Erling Thyrhaug
  • Karel Zidek
  • Jakub Dostál
  • David Bína
  • Donatas Zigmantas

Summary, in English

The Fenna-Matthews-Olson (FMO) photosynthetic complex found in green sulfur bacteria has over the last decades been one of the favorite "model" systems for biological energy transfer. However, even after 40 years of studies, quantitative knowledge about its energy-transfer properties is limited. Here, two-dimensional electronic spectroscopy with full polarization control is used to provide an accurate description of the electronic structure and population dynamics in the complex. The sensitivity of the technique has further allowed us to spectroscopically identify the eighth bacterio-chlorophyll molecule recently discovered in the crystal structure. The time evolution of the spectral structure, covering time scales from tens of femtoseconds up to a nanosecond, reflects the energy flow in FMO and enables us to extract an unambiguous energy-transfer scheme.

Department/s

  • Chemical Physics
  • NanoLund: Centre for Nanoscience

Publishing year

2016-05-05

Language

English

Pages

1653-1660

Publication/Series

The Journal of Physical Chemistry Letters

Volume

7

Issue

9

Document type

Journal article

Publisher

The American Chemical Society (ACS)

Topic

  • Physical Chemistry (including Surface- and Colloid Chemistry)
  • Biological Sciences
  • Physical Sciences

Status

Published

ISBN/ISSN/Other

  • ISSN: 1948-7185