Fluorescence blinking of the RC-LH1 complex from Rhodopseudomonas palustris.
Fluorescence blinking of the RC-LH1 complex from Rhodopseudomonas palustris.
复制标题
来自沼泽红假单胞菌的 RC-LH1 复合物的荧光闪烁。
DOI:
10.1002/cphc.201000588
复制
发表时间:
2011
期刊:
影响因子:
--
通讯作者:
J. Köhler
中科院分区:
文献类型:
--
作者:
S. Unterkofler;Tobias Pflock;J. Southall;R. Cogdell;J. Köhler
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.
影响因子:
2.8
作者:
D. Ernst;R. Hildner;C. Hippius;F. Würthner;J. Köhler
通讯作者:
J. Köhler