Exciton delocalization probed by excitation annihilation in the light-harvesting antenna LH2

被引：112
|
作者：
Trinkunas, G
Herek, JL
Polívka, T
Sundström, V
Pullerits, T
机构：
[1] Univ Lund, Dept Chem Phys, S-22100 Lund, Sweden
[2] Inst Phys, LT-2600 Vilnius, Lithuania
来源：
PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 18期
关键词：
D O I：
10.1103/PhysRevLett.86.4167
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Singlet-singlet annihilation is used to study exciton delocalization in the light harvesting antenna complex LH2 (B800-B850) from the photosynthetic purple bacterium Rhodobacter sphaeroides. The characteristic femtosecond decay constants of the high intensity isotropic and the low intensity anisotropy kinetics of the B850 ring are related to the hopping time tau (h) and the coherence length N-coh Of the exciton. Our analysis yields Ncoh = 2.8 +/- 0.4 and tau (h) = 0.27 +/- 0.05 ps. This approach can be seen as an extension to the concept of the spectroscopic ruler.
引用
收藏
页码：4167 / 4170
页数：4
相关论文
共 50 条
  • [41] Quantum coherence spectroscopy reveals complex dynamics in bacterial light-harvesting complex 2 (LH2)
    Harel, Elad
    Engel, Gregory S.
    PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2012, 109 (03) : 706 - 711
  • [42] Sequential energy transfer driven by monoexponential dynamics in a biohybrid light-harvesting complex 2 (LH2)
    Yoneda, Yusuke
    Kato, Daiji
    Kondo, Masaharu
    Nagashima, Kenji V. P.
    Miyasaka, Hiroshi
    Nagasawa, Yutaka
    Dewa, Takehisa
    PHOTOSYNTHESIS RESEARCH, 2020, 143 (02) : 115 - 128
  • [43] Extension of Light-Harvesting Ability of Photosynthetic Light-Harvesting Complex 2 (LH2) through Ultrafast Energy Transfer from Covalently Attached Artificial Chromophores
    Yoneda, Yusuke
    Noji, Tomoyasu
    Katayama, Tetsuro
    Mizutani, Naoto
    Komori, Daisuke
    Nango, Mamoru
    Miyasaka, Hiroshi
    Itoh, Shigeru
    Nagasawa, Yutaka
    Dewa, Takehisa
    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2015, 137 (40) : 13121 - 13129
  • [44] Selective oxidation of B800 bacteriochlorophyll a in photosynthetic light-harvesting protein LH2
    Yoshitaka Saga
    Kiyoshiro Kawano
    Yuji Otsuka
    Michie Imanishi
    Yukihiro Kimura
    Sayaka Matsui
    Hitoshi Asakawa
    Scientific Reports, 9
  • [45] Excitation migration in fluctuating light-harvesting antenna systems
    Jevgenij Chmeliov
    Gediminas Trinkunas
    Herbert van Amerongen
    Leonas Valkunas
    Photosynthesis Research, 2016, 127 : 49 - 60
  • [46] Excitation migration in fluctuating light-harvesting antenna systems
    Chmeliov, Jevgenij
    Trinkunas, Gediminas
    van Amerongen, Herbert
    Valkunas, Leonas
    PHOTOSYNTHESIS RESEARCH, 2016, 127 (01) : 49 - 60
  • [47] Excitation energy transfer from the bacteriochlorophyll Soret band to carotenoids in the LH2 light-harvesting complex from Ectothiorhodospira haloalkaliphila is negligible
    A. P. Razjivin
    E. P. Lukashev
    V. O. Kompanets
    V. S. Kozlovsky
    A. A. Ashikhmin
    S. V. Chekalin
    A. A. Moskalenko
    V. Z. Paschenko
    Photosynthesis Research, 2017, 133 : 289 - 295
  • [48] Emitting excitonic polaron states in core LH1 and peripheral LH2 bacterial light-harvesting complexes
    Timpmann, K
    Rätsep, M
    Hunter, CN
    Freiberg, A
    JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (29): : 10581 - 10588
  • [49] Excitation energy transfer from the bacteriochlorophyll Soret band to carotenoids in the LH2 light-harvesting complex from Ectothiorhodospira haloalkaliphila is negligible
    Razjivin, A. P.
    Lukashev, E. P.
    Kompanets, V. O.
    Kozlovsky, V. S.
    Ashikhmin, A. A.
    Chekalin, S. V.
    Moskalenko, A. A.
    Paschenko, V. Z.
    PHOTOSYNTHESIS RESEARCH, 2017, 133 (1-3) : 289 - 295
  • [50] Manifestation of protein conformations in the B850 absorption band of light-harvesting complex LH2
    Meldaikis, Julius
    Zerlauskiene, Oksana
    Abramavicius, Darius
    Valkunas, Leonas
    CHEMICAL PHYSICS, 2013, 423 : 9 - 14
12345