Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/89140
Title: Direct observation of multistep energy transfer in LHCII with fifth-order 3D electronic spectroscopy
Authors: Zhang, Zhengyang
Lambrev, Petar H.
Wells, Kym Lewis
Garab, Győző
Tan, Howe-Siang
Keywords: Energy Transfer
Optical Physics
DRNTU::Science::Physics
Issue Date: 2015
Source: 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, 6, 7914-. doi:10.1038/ncomms8914
Series/Report no.: Nature Communications
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.
URI: https://hdl.handle.net/10356/89140
http://hdl.handle.net/10220/46138
DOI: http://dx.doi.org/10.1038/ncomms8914
Rights: © 2015 Macmillan Publishers Limited. This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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