Journal ArticleDOI
Light Absorption and Energy Transfer in the Antenna Complexes of Photosynthetic Organisms.
Tihana Mirkovic,Evgeny E. Ostroumov,Jessica M. Anna,Rienk van Grondelle,Govindjee,Gregory D. Scholes,Gregory D. Scholes +6 more
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TLDR
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.Abstract:
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...read more
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Using coherence to enhance function in chemical and biophysical systems
Gregory D. Scholes,Graham R. Fleming,Lin X. Chen,Lin X. Chen,Alán Aspuru-Guzik,Andreas Buchleitner,David F. Coker,Gregory S. Engel,Rienk van Grondelle,Akihito Ishizaki,David M. Jonas,Jeff S. Lundeen,James K. McCusker,Shaul Mukamel,Jennifer P. Ogilvie,Alexandra Olaya-Castro,Mark A. Ratner,Frank C. Spano,K. Birgitta Whaley,K. Birgitta Whaley,Xiaoyang Zhu +20 more
TL;DR: The state of recent discoveries is surveyed, viewpoints that suggest that coherence can be used in complex chemical systems are presented, and the role of coherence as a design element in realizing function is discussed.
Journal ArticleDOI
Bio-Optics and Bio-Inspired Optical Materials.
TL;DR: This review discusses various optical phenomena, including absorption and transparency, diffraction, interference, reflection and antireflection, scattering, light harvesting, wave guiding and lensing, camouflage, and bioluminescence, that are responsible for the unique optical properties of materials and structures found in nature and biology.
Journal ArticleDOI
Photovoltaic concepts inspired by coherence effects in photosynthetic systems
TL;DR: The impacts of coherence and bioinspiration on diverse solar-energy harvesting solutions, including artificial photosynthetic systems are surveyed, and the prospects for a coherent energy conversion system are speculated.
Journal ArticleDOI
Exciton Transport in Molecular Aggregates – From Natural Antennas to Synthetic Chromophore Systems
TL;DR: In this article, a review summarizes the theoretical background of the nature of the electronically excited states of molecular aggregates, and a brief overview is provided over experimental techniques that allow to study the properties of excitons in molecular aggregation.
Journal ArticleDOI
Non-adiabatic Excited-State Molecular Dynamics: Theory and Applications for Modeling Photophysics in Extended Molecular Materials.
Tammie Nelson,Alexander J. White,Josiah A. Bjorgaard,Andrew E. Sifain,Andrew E. Sifain,Yu Zhang,Benjamin Nebgen,Sebastian Fernandez-Alberti,Dmitry Mozyrsky,Adrian E. Roitberg,Sergei Tretiak +10 more
TL;DR: This Review will describe recent theoretical advances including treatment of electronic decoherence in surface-hopping methods, the role of solvent effects, trivial unavoided crossings, analysis of data based on transition densities, and efficient computational implementations of these numerical methods.
References
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Journal ArticleDOI
Crystal structure of an integral membrane light-harvesting complex from photosynthetic bacteria
Gerry McDermott,Stephen M. Prince,Andrew A. Freer,A. M. Hawthornthwaite-Lawless,Miroslav Z. Papiz,Richard J. Cogdell,Neil W. Isaacs +6 more
TL;DR: The crystal structure of the light harvesting antenna complex (LH2) from Rhodopseudomonas acidophila strain 10050 showed that the active assembly consists of two concentric cylinders of helical protein subunits which enclose the pigment molecules as discussed by the authors.
Journal ArticleDOI
Photoprotection and Other Responses of Plants to High Light Stress
TL;DR: The Xanthophyll cycle and thermal energy dissipation were investigated in this paper. But the results of these experiments were limited to the case of light-capturing systems, where active oxygen was not formed in the Photochemical Apparatus.
Journal ArticleDOI
Coherently wired light-harvesting in photosynthetic marine algae at ambient temperature
Elisabetta Collini,Cathy Y. Wong,Krystyna E. Wilk,Paul M. G. Curmi,Paul Brumer,Gregory D. Scholes +5 more
TL;DR: Observations provide compelling evidence for quantum-coherent sharing of electronic excitation across the 5-nm-wide proteins under biologically relevant conditions, suggesting that distant molecules within the photosynthetic proteins are ‘wired’ together by quantum coherence for more efficient light-harvesting in cryptophyte marine algae.
Journal ArticleDOI
Crystal structure of spinach major light-harvesting complex at 2.72 A resolution.
Zhenfeng Liu,Hanchi Yan,Kebin Wang,Tingyun Kuang,Jiping Zhang,Lulu Gui,Xiao-Min An,Wenrui Chang +7 more
TL;DR: The first X-ray structure of LHC-II in icosahedral proteoliposome assembly at atomic detail is reported, finding the xanthophyll-cycle carotenoid at the monomer–monomer interface may be involved in the non-radiative dissipation of excessive energy, one of the photoprotective strategies that have evolved in plants.