Optimal thermal bath for robust excitation energy transfer in disordered light-harvesting complex 2 of purple bacteria
Name
Cleary-2013-Optimal thermal bath.pdf
Size
520.03 KB
Format
Adobe PDF
Checksum (MD5)
773efb90f839c2a51a0b939b6863698f
Author(s)
Cleary, Liam
Cao, Jianshu
Date Issued
December 2013
Journal
New Journal of Physics
Publisher
IOP Publishing
Citation
Cleary, Liam, and Jianshu Cao. “Optimal Thermal Bath for Robust Excitation Energy Transfer in Disordered Light-Harvesting Complex 2 of Purple Bacteria.” New Journal of Physics 15, no. 12 (December 23, 2013): 125030. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft
Version
Final published version
Abstract
The existence of an optimal thermal bath to facilitate robust energy transfer between the spectrally separated B800 and B850 rings in light-harvesting complex 2 (LH2) of purple bacteria is investigated via the multichromophoric Förster theory. Due to the inherent energy bias between the two rings, the energy transfer rate from B800 to B850 is maximized as a function of the bath coupling strength, establishing an optimization criterion. Critically, upon inclusion of energetic disorder, this maximum is averaged out. However, noting the distribution of transfer rates, we find that the bath coupling strength can yield a minimal dispersion for the rate distribution, i.e. a maximum ratio of mean to standard deviation, thus achieving maximum energy transfer robust to the effects of static disorder.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
Terms of Use
Creative Commons Attribution
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1088/1367-2630/15/12/125030
