期刊
CHEMICAL REVIEWS
卷 117, 期 2, 页码 249-293出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.chemrev.6b00002
关键词
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资金
- Photosynthetic Antenna Research Center (PARC), an Energy Frontier Research Center - U.S. Department of Energy, Office of Science, Basic Energy Sciences [DE-SC0001035]
- Natural Sciences and Engineering Research Council of Canada
- Departments of Biochemistry and Plant Biology at the University of Illinois at Urbana-Champaign (UIUC)
- VU University
- Advanced Investigator grant from the European Research Council (PHOT-PROT) [267333]
- EU FP7 project PAPETS [GA 323901]
- Netherlands Royal Academy of Sciences (KNAW)
- European Research Council (ERC) [267333] Funding Source: European Research Council (ERC)
The process of photosynthesis is initiated by the capture of sunlight by a network of light-absorbing molecules (chromophores), which are also responsible for the subsequent funneling of the excitation energy to the reaction centers. Through evolution, genetic drift, and speciation, photosynthetic organisms have discovered many solutions for light harvesting. In this review, we describe the underlying photophysical principles by which this energy is absorbed, as well as the mechanisms of electronic excitation energy transfer (EET). First, optical properties of the individual pigment chromophores present in light-harvesting antenna complexes are introduced, and then we examine the collective behavior of pigment-pigment and pigment-protein interactions. The description of energy transfer, in particular multichromophoric antenna structures, is shown to vary depending on the spatial and energetic landscape, which dictates the relative coupling strength between constituent pigment molecules. In the latter half of the article, we focus on the light harvesting complexes of purple bacteria as a model to illustrate the present understanding of the synergetic effects leading to EET optimization of light-harvesting antenna systems while exploring the structure and function of the integral chromophores. We end this review with a brief overview of the energy-transfer dynamics and pathways in the light-harvesting antennas of various photosynthetic organisms.
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