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Article: Low-lying excited states of light-harvesting system II in purple bacteria

TitleLow-lying excited states of light-harvesting system II in purple bacteria
Authors
KeywordsPhysics
Issue Date2003
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journal/jpcbfk
Citation
Journal Of Physical Chemistry B, 2003, v. 107 n. 35, p. 9589-9600 How to Cite?
AbstractThe light-harvesting system II (LH2) from Rhodospirillum (Rs.) molischianum is a two-ring circular aggregate composed of eight weakly coupled bacteriochlorophylls-a (BChls-a) in the B800 ring and sixteen strongly coupled BChls-a in the B850 ring. The linear-scaling localized-density-matrix (LDM) method has been implemented at the INDO/S level to probe the electronic structures of monomers, dimers, trimers, pentamers, and entire rings of BChls. The low-lying excited states of a B850 ring are found to fit extremely well with a Frenkel exciton model with long-range dipolar interactions. More importantly, the nearest neighboring BChls-a exciton coupling constants on a B850 ring are found to be close to those evaluated directly from dimers, and thus, an existing discrepancy between calculated results of dimers and B850 rings has been resolved. In addition, solvent effects are simulated and the results are compared to the experimental findings.
Persistent Identifierhttp://hdl.handle.net/10722/42636
ISSN
2015 Impact Factor: 3.187
2015 SCImago Journal Rankings: 1.414
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorNg, MFen_HK
dc.contributor.authorZhao, Yen_HK
dc.contributor.authorChen, GHen_HK
dc.date.accessioned2007-03-23T04:28:29Z-
dc.date.available2007-03-23T04:28:29Z-
dc.date.issued2003en_HK
dc.identifier.citationJournal Of Physical Chemistry B, 2003, v. 107 n. 35, p. 9589-9600en_HK
dc.identifier.issn1520-6106en_HK
dc.identifier.urihttp://hdl.handle.net/10722/42636-
dc.description.abstractThe light-harvesting system II (LH2) from Rhodospirillum (Rs.) molischianum is a two-ring circular aggregate composed of eight weakly coupled bacteriochlorophylls-a (BChls-a) in the B800 ring and sixteen strongly coupled BChls-a in the B850 ring. The linear-scaling localized-density-matrix (LDM) method has been implemented at the INDO/S level to probe the electronic structures of monomers, dimers, trimers, pentamers, and entire rings of BChls. The low-lying excited states of a B850 ring are found to fit extremely well with a Frenkel exciton model with long-range dipolar interactions. More importantly, the nearest neighboring BChls-a exciton coupling constants on a B850 ring are found to be close to those evaluated directly from dimers, and thus, an existing discrepancy between calculated results of dimers and B850 rings has been resolved. In addition, solvent effects are simulated and the results are compared to the experimental findings.en_HK
dc.format.extent163851 bytes-
dc.format.extent26112 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/msword-
dc.languageengen_HK
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journal/jpcbfken_HK
dc.relation.ispartofJournal of Physical Chemistry Ben_HK
dc.subjectPhysicsen_HK
dc.titleLow-lying excited states of light-harvesting system II in purple bacteriaen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1539-3755&volume=69&issue=3&spage=032902:1&epage=4&date=2004&atitle=Low-lying+excited+states+of+light-harvesting+system+II+in+purple+bacteriaen_HK
dc.identifier.emailChen, GH:ghc@yangtze.hku.hken_HK
dc.identifier.authorityChen, GH=rp00671en_HK
dc.description.naturelink_to_subscribed_fulltexten_HK
dc.identifier.doi10.1021/jp034320r-
dc.identifier.scopuseid_2-s2.0-0141519586en_HK
dc.identifier.hkuros92511-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0141519586&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume107en_HK
dc.identifier.issue35en_HK
dc.identifier.spage9589en_HK
dc.identifier.epage9600en_HK
dc.identifier.isiWOS:000185034700060-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridNg, MF=37161861600en_HK
dc.identifier.scopusauthoridZhao, Y=8579132600en_HK
dc.identifier.scopusauthoridChen, GH=35253368600en_HK

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