Geometry, supertransfer, and optimality in the light harvesting of purple bacteria

Baghbanzadeh, Sima and Kassal, Ivan (2016) Geometry, supertransfer, and optimality in the light harvesting of purple bacteria. Journal of Physical Chemistry Letters, 7 19: 3804-3811. doi:10.1021/acs.jpclett.6b01779


Author Baghbanzadeh, Sima
Kassal, Ivan
Title Geometry, supertransfer, and optimality in the light harvesting of purple bacteria
Journal name Journal of Physical Chemistry Letters   Check publisher's open access policy
ISSN 1948-7185
Publication date 2016-10-06
Year available 2016
Sub-type Article (original research)
DOI 10.1021/acs.jpclett.6b01779
Open Access Status Not yet assessed
Volume 7
Issue 19
Start page 3804
End page 3811
Total pages 8
Place of publication Washington, DC, United States
Publisher American Chemical Society
Language eng
Abstract The remarkable rotational symmetry of the photosynthetic antenna complexes of purple bacteria has long been thought to enhance their light harvesting and excitation energy transport. We study the role of symmetry by modeling hypothetical antennas whose symmetry is broken by altering the orientations of the bacteriochlorophyll pigments. We find that in both LH2 and LH1 complexes, symmetry increases energy transfer rates by enabling the cooperative, coherent process of supertransfer. The enhancement is particularly pronounced in the LH1 complex, whose natural geometry outperforms the average randomized geometry by 5.5 standard deviations, the most significant coherence-related enhancement found in a photosynthetic complex.
Keyword Chemistry, Physical
Nanoscience & Nanotechnology
Materials Science, Multidisciplinary
Physics, Atomic, Molecular & Chemical
Chemistry
Science & Technology - Other Topics
Materials Science
Physics
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID DE140100433
CE110001013
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
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