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Zhang Z, Lambrev PH, Wells KL, et al. Direct observation of multistep energy transfer in LHCII with fifth-order 3D electronic spectroscopy. Nat Commun. 2015;6:7914doi: 10.1038/ncomms8914.
Zhang, Z., Lambrev, P. H., Wells, K. L., Garab, G., & Tan, H. S. (2015). Direct observation of multistep energy transfer in LHCII with fifth-order 3D electronic spectroscopy. Nature communications, 67914. https://doi.org/10.1038/ncomms8914
Zhang, Zhengyang, et al. "Direct observation of multistep energy transfer in LHCII with fifth-order 3D electronic spectroscopy." Nature communications vol. 6 (2015): 7914. doi: https://doi.org/10.1038/ncomms8914
Zhang Z, Lambrev PH, Wells KL, Garab G, Tan HS. Direct observation of multistep energy transfer in LHCII with fifth-order 3D electronic spectroscopy. Nat Commun. 2015 Jul 31;6:7914. doi: 10.1038/ncomms8914. PMID: 26228055; PMCID: PMC4532882.
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Nat Commun. 2015 Jul 31;6:7914. doi: 10.1038/ncomms8914.

Direct observation of multistep energy transfer in LHCII with fifth-order 3D electronic spectroscopy.

Nature communications

Zhengyang Zhang, Petar H Lambrev, Kym L Wells, Győző Garab, Howe-Siang Tan

Affiliations

  1. Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371.
  2. Biological Research Centre, Hungarian Academy of Sciences, Temesvári krt. 62, Szeged 6726, Hungary.

PMID: 26228055 PMCID: PMC4532882 DOI: 10.1038/ncomms8914

Abstract

During photosynthesis, sunlight is efficiently captured by light-harvesting complexes, and the excitation energy is then funneled towards the reaction centre. These photosynthetic excitation energy transfer (EET) pathways are complex and proceed in a multistep fashion. Ultrafast two-dimensional electronic spectroscopy (2DES) is an important tool to study EET processes in photosynthetic complexes. However, the multistep EET processes can only be indirectly inferred by correlating different cross peaks from a series of 2DES spectra. Here we directly observe multistep EET processes in LHCII using ultrafast fifth-order three-dimensional electronic spectroscopy (3DES). We measure cross peaks in 3DES spectra of LHCII that directly indicate energy transfer from excitons in the chlorophyll b (Chl b) manifold to the low-energy level chlorophyll a (Chl a) via mid-level Chl a energy states. This new spectroscopic technique allows scientists to move a step towards mapping the complete complex EET processes in photosynthetic systems.

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