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Fluorescence blinking of the RC-LH1 complex from Rhodopseudomonas palustris

Title data

Unterkofler, Sarah ; Pflock, Tobias J. ; Southall, June ; Cogdell, Richard J. ; Köhler, Jürgen:
Fluorescence blinking of the RC-LH1 complex from Rhodopseudomonas palustris.
In: ChemPhysChem. Vol. 12 (2011) Issue 3 . - pp. 711-716.
ISSN 1439-4235
DOI: https://doi.org/10.1002/cphc.201000588

Abstract in another language

We investigate fluorescence blinking of individual RC-LH1 (reaction-centre-light-harvesting 1) complexes from the photosynthetic purple bacterium Rhodopseudomonas palustris. For both the on- and off-periods the telegraph-like intermittency of the fluorescence intensity follows power-law statistics with exponents between 1 and 2. Yet, this behaviour was only observed for a small fraction of the complexes studied. We argue that the majority of the complexes reside in a prolonged on-state, due to a mechanism that is similar to the Coulomb blockade in semiconductor quantum dots, and which results here from the photoinduced charges located within the RC upon photoexcitation of the LH1 antenna.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: spectroscopic methods
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Lehrstuhl Experimentalphysik IX - Spektroskopie weicher Materie > Lehrstuhl Experimentalphysik IX - Spektroskopie weicher Materie - Univ.-Prof. Dr. Jürgen Köhler
Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Lehrstuhl Experimentalphysik IX - Spektroskopie weicher Materie
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 12 Apr 2018 13:22
Last Modified: 12 Apr 2018 13:22
URI: https://eref.uni-bayreuth.de/id/eprint/43408