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Donatas Zigmantas. Portrait.

Donatas Zigmantas

Professor

Donatas Zigmantas. Portrait.

Ultrafast Energy Transfer from Chlorophyll c(2) to Chlorophyll a in Fucoxanthin-Chlorophyll Protein Complex

Author

  • Egidijus Songaila
  • Ramunas Augulis
  • Andrius Gelzinis
  • Vytautas Butkus
  • Andrew Gall
  • Claudia Buechel
  • Bruno Robert
  • Donatas Zigmantas
  • Darius Abramavicius
  • Leonas Valkunas

Summary, in English

Light-harvesting in fucoxanthin-chlorophyll protein (FCP) of diatoms is performed by a cluster of chromophores: chlorophylls a (Chl a), chlorophylls c(2) (Chl c(2)), and carotenoids fucoxanthins. It is well-known that energy captured by fucoxanthin is transferred to Chl a on a subpicosecond time scale. However, the energy flow channel connecting Chl c(2) and Chl a remained elusive. In this study, the energy transfer between Chl c(2) and Chl a molecules in the FCP complex from the diatom algae C. meneghiniana at room temperature is investigated using pump probe and coherent two-dimensional electronic spectroscopy. Measured dynamics of the absorption band associated with the Q(y) transition of the Chl c(2) reveals an ultrafast energy transfer pathway to CM a. This conclusion is supported by the theoretical simulations based on the effective oscillator model.

Department/s

  • Chemical Physics

Publishing year

2013

Language

English

Pages

3590-3595

Publication/Series

The Journal of Physical Chemistry Letters

Volume

4

Issue

21

Document type

Journal article

Publisher

The American Chemical Society (ACS)

Topic

  • Atom and Molecular Physics and Optics

Status

Published

ISBN/ISSN/Other

  • ISSN: 1948-7185