Ultrafast exciton relaxation in the B850 antenna complex of Rhodobacter sphaeroides

V. Nagarajan; R. G. Alden; J. C. Williams

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Ultrafast exciton relaxation in the B850 antenna complex of Rhodobacter sphaeroides

机译：球形红细菌B850天线复合体中的超快激子弛豫

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Spectral changes were measured with fem- tosecond resolution following low-intensity, broad-band exci- tation of the peripheral antenna complex of the purple pho- tosynthetic bacterium Rhodobacter sphaeroides. Absorption anisotropy decays also were measured. We identified a 35-fs relaxation of the absorption and emission spectra of the excited state, as well as a 20-fs anisotropy decay. We interpret these results as interlevel relaxation and dephasing, respec- tively, of extensively delocalized exciton states of the circular bacteriochlorophyll aggregate.

机译：在紫色光合细菌球形球形红细菌的外围天线复合体低强度宽带激发后，以飞秒分辨率测量光谱变化。还测量了吸收各向异性衰减。我们确定了激发态吸收光谱和发射光谱的35 fs弛豫以及20 fs的各向异性衰减。我们将这些结果解释为圆形细菌叶绿素聚集体的广泛离域激子态的层间弛豫和相移。

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《Proceedings of the National Academy of Sciences of the United States of America》 |1996年第24期|p.13774-13779|共6页
作者
V. Nagarajan; R. G. Alden; J. C. Williams;
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收录信息美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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正文语种 eng
中图分类自然科学总论;
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1. Light Harvesting by Carotenoids Incorporated into the B850 Light-Harvesting Complex from Rhodobacter sphaeroides R-26.1: Excited-State Relaxation, Ultrafast Triplet Formation, and Energy Transfer to Bacteriochlorophyll [J] . Emmanouil Papagiannakis, Somes Kumar Das, Andrew Gall, The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical . 2003,第23期

机译：球形红球菌R-26.1掺入B850采光复合物中的类胡萝卜素的光收集：激发态弛豫，超快三重态形成和能量转移至细菌叶绿素
2. Identification of the upper exciton component of the B850 bacteriochlorophylls of the LH2 antenna complex, using a B800-free mutant of Rhodobacter sphaeroides [J] . Koolhaas MHC., Fowler GJS., Bibby TS., Biochemistry . 1998,第14期

机译：使用球形芽孢杆菌无B800突变体鉴定LH2天线复合体的B850细菌叶绿素的上激子成分
3. Photophysical characterization of the B800-depleted light harvesting complex B850 of Rhodobacter sphaeroides Implications to the ultrafast energy transfer 800 -> 850 nm [J] . D. Leupold, H. Stiel, J. Ehlert, Chemical Physics Letters . 1999,第5a6期

机译：球形红球菌耗尽B800的光收集复合物B850的光物理特征对超快能量转移800-> 850 nm的影响
4. PROTON UPTAKE AND PROTEIN RELAXATION IN THE REACTION CENTER OF RHODOBACTER SPHAEROIDES [C] . Maria A. Kozlova, Dmitry A. Cherepanov, Laura Baciou, International Congress of Photosynthesis . 2005

机译：质子摄取和蛋白质松弛在乳菌斯氏菌的反应中心
5. Electric-field effects in Rhodobacter sphaeroides chromatophores and excitation equilibration in wild-type and mutant Rhodobacter sphaeroides intracytoplasmic membranes. [D] . Steiger, Jana Lee. 2001

机译：球形球形红球菌色谱中的电场作用以及野生型和突变球形红球菌胞质内膜的激发平衡。
6. Ultrafast exciton relaxation in the B850 antenna complex of Rhodobacter sphaeroides [O] . V. Nagarajan, R. G. Alden, J. C. Williams, 1996

机译：B850天线复合体中的超快激子弛豫球形红细菌
7. Light harvesting by carotenoids incorporated into the B850 lightharvesting complex from Rhodobacter sphaeroides R-26.1: Excited-state relaxation, ultrafast triplet formation, and energy transfer to bacteriochlorophyll [O] . Emmanouil Papagiannakis, Somes Kumar Das, Andrew Gall, 2014

机译：通过类胡萝卜素收集来自球形红细菌R-26.1的B850轻型采光复合物：激发态弛豫，超快三重态形成和能量转移到细菌叶绿素

Ultrafast exciton relaxation in the B850 antenna complex of Rhodobacter sphaeroides

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