Long range excitonic transport in a biomimetic system inspired by the bacterial light-harvesting apparatus

The Journal of Chemical Physics
Elad Harel

Abstract

Photosynthesis, the process by which energy from sunlight drives cellular metabolism, relies on a unique organization of light-harvesting and reaction center complexes. Recently, the organization of light-harvesting LH2 complexes and dimeric reaction center-light-harvesting I-PufX core complexes in membranes of purple non-sulfur bacteria was revealed by atomic force microscopy [S. Bahatyrova et al., Nature (London) 430, 1058 (2004)]. Here, we discuss optimal exciton transfer in a biomimetic system closely modeled on the structure of LH2 and its organization within the membrane using a Markovian quantum model with dissipation and trapping added phenomenologically. In a deliberate manner, we neglect the high level detail of the bacterial light-harvesting complex and its interaction with the phonon bath in order to elucidate a set of design principles that may be incorporated in artificial pigment-scaffold constructs in a supramolecular assembly. We show that our scheme reproduces many of the most salient features found in their natural counterpart and may be largely explained by simple electrostatic considerations. Most importantly, we show that quantum effects act primarily to enforce robustness with respect to spatial and spect...Continue Reading

References

Jan 1, 1967·Annual Review of Microbiology·N Pfennig
Aug 27, 2004·Nature·Svetlana BahatyrovaC Neil Hunter
Sep 27, 2007·Proceedings of the National Academy of Sciences of the United States of America·Melih K SenerKlaus Schulten
Aug 30, 2008·The Journal of Biological Chemistry·John D OlsenC Neil Hunter
Dec 3, 2008·The Journal of Chemical Physics·Masoud MohseniAlán Aspuru-Guzik
Jul 17, 2009·The Journal of Physical Chemistry. B·Patrick RebentrostAlán Aspuru-Guzik
Nov 26, 2009·The Journal of Physical Chemistry. a·Jianshu Cao, Robert J Silbey
Jul 7, 2011·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·John S Briggs, Alexander Eisfeld
Jan 5, 2012·Proceedings of the National Academy of Sciences of the United States of America·Elad Harel, Gregory S Engel

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Citations

Jul 5, 2012·The Journal of Chemical Physics·Jun YeJianshu Cao
Sep 11, 2012·The Journal of Chemical Physics·Shi-Jie XiongYang Zhao
Nov 28, 2018·Physical Chemistry Chemical Physics : PCCP·Zixuan HuSabre Kais
Jul 22, 2014·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Shi-Jie XiongYang Zhao
Jun 6, 2018·The Journal of Chemical Physics·Zixuan HuSabre Kais
Sep 5, 2015·Physical Review Letters·Silvia VicianiFilippo Caruso
Feb 6, 2013·The Journal of Physical Chemistry. B·Arvi FreibergMargus Rätsep
Nov 26, 2020·The Journal of Physical Chemistry Letters·Shawn Irgen-GioroElad Harel

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BETA
x-ray crystallography

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