Light-harvesting mechanism of bacteria exploits a critical interplay between the dynamics of transport and trapping

Felipe Caycedo-Soler, Ferney J. Rodríguez, Luis Quiroga, Neil F Johnson

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Light-harvesting bacteria Rhodospirillum photometricum were recently found to adopt strikingly different architectures depending on illumination conditions. We present analytic and numerical calculations which explain this observation by quantifying a dynamical interplay between excitation transfer kinetics and reaction center cycling. High light-intensity membranes exploit dissipation as a photoprotective mechanism, thereby safeguarding a steady supply of chemical energy, while low light-intensity membranes efficiently process unused illumination intensity by channeling it to open reaction centers. More generally, our analysis elucidates and quantifies the trade-offs in natural network design for solar energy conversion.

Original languageEnglish (US)
Article number158302
JournalPhysical Review Letters
Volume104
Issue number15
DOIs
StatePublished - Apr 16 2010

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bacteria
luminous intensity
illumination
trapping
membranes
solar energy conversion
chemical energy
dissipation
cycles
kinetics
excitation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Light-harvesting mechanism of bacteria exploits a critical interplay between the dynamics of transport and trapping. / Caycedo-Soler, Felipe; Rodríguez, Ferney J.; Quiroga, Luis; Johnson, Neil F.

In: Physical Review Letters, Vol. 104, No. 15, 158302, 16.04.2010.

Research output: Contribution to journalArticle

Caycedo-Soler, Felipe ; Rodríguez, Ferney J. ; Quiroga, Luis ; Johnson, Neil F. / Light-harvesting mechanism of bacteria exploits a critical interplay between the dynamics of transport and trapping. In: Physical Review Letters. 2010 ; Vol. 104, No. 15.
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