Optimal thermal bath for robust excitation energy transfer in disordered light-harvesting complex 2 of purple bacteria
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, t...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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IOP Publishing
2014
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| Online Access: | http://hdl.handle.net/1721.1/85895 https://orcid.org/0000-0001-7616-7809 |
| _version_ | 1811072446561779712 |
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| author | Cleary, Liam Cao, Jianshu |
| author2 | Massachusetts Institute of Technology. Department of Chemistry |
| author_facet | Massachusetts Institute of Technology. Department of Chemistry Cleary, Liam Cao, Jianshu |
| author_sort | Cleary, Liam |
| collection | MIT |
| description | 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. |
| first_indexed | 2024-09-23T09:06:06Z |
| format | Article |
| id | mit-1721.1/85895 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T09:06:06Z |
| publishDate | 2014 |
| publisher | IOP Publishing |
| record_format | dspace |
| spelling | mit-1721.1/858952022-09-26T10:28:02Z Optimal thermal bath for robust excitation energy transfer in disordered light-harvesting complex 2 of purple bacteria Cleary, Liam Cao, Jianshu Massachusetts Institute of Technology. Department of Chemistry Cleary, Liam Cao, Jianshu 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. National Science Foundation (U.S.) (Grant CHE-1112825) United States. Defense Advanced Research Projects Agency (Grant N99001-10-1-4063) United States. Dept. of Energy. Center for Excitonics (Award DE-SC0001088) 2014-03-24T13:35:50Z 2014-03-24T13:35:50Z 2013-12 2013-08 Article http://purl.org/eprint/type/JournalArticle 1367-2630 http://hdl.handle.net/1721.1/85895 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 https://orcid.org/0000-0001-7616-7809 en_US http://dx.doi.org/10.1088/1367-2630/15/12/125030 New Journal of Physics Creative Commons Attribution http://creativecommons.org/licenses/by/3.0/ application/pdf IOP Publishing IOP Publishing |
| spellingShingle | Cleary, Liam Cao, Jianshu Optimal thermal bath for robust excitation energy transfer in disordered light-harvesting complex 2 of purple bacteria |
| title | Optimal thermal bath for robust excitation energy transfer in disordered light-harvesting complex 2 of purple bacteria |
| title_full | Optimal thermal bath for robust excitation energy transfer in disordered light-harvesting complex 2 of purple bacteria |
| title_fullStr | Optimal thermal bath for robust excitation energy transfer in disordered light-harvesting complex 2 of purple bacteria |
| title_full_unstemmed | Optimal thermal bath for robust excitation energy transfer in disordered light-harvesting complex 2 of purple bacteria |
| title_short | Optimal thermal bath for robust excitation energy transfer in disordered light-harvesting complex 2 of purple bacteria |
| title_sort | optimal thermal bath for robust excitation energy transfer in disordered light harvesting complex 2 of purple bacteria |
| url | http://hdl.handle.net/1721.1/85895 https://orcid.org/0000-0001-7616-7809 |
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