Energy Transfer in Isolated LHC II Studied by Femtosecond Pump-Probe Technique
YANG Yi1,2, GUO Li-Jun1,2, LIU Yuan3, LIU Wei-Min1,2, ZHU Rong-Yi1,2, QIAN Shi-Xiong1, XU Chun-He3
1Department of Physics, Fudan University, Shanghai 200433
2National Key Laboratory of Surface Physics, Fudan University, Shanghai 200433
3Shanghai Institute of Plant Physiology, Chinese Academy of Sciences, Shanghai 200032
Energy Transfer in Isolated LHC II Studied by Femtosecond Pump-Probe Technique
YANG Yi1,2;GUO Li-Jun1,2;LIU Yuan3;LIU Wei-Min1,2;ZHU Rong-Yi1,2;QIAN Shi-Xiong1;XU Chun-He3
1Department of Physics, Fudan University, Shanghai 200433
2National Key Laboratory of Surface Physics, Fudan University, Shanghai 200433
3Shanghai Institute of Plant Physiology, Chinese Academy of Sciences, Shanghai 200032
Abstract： Excitation energy transfer in the isolated light-harvesting chlorophyll (Chl)-a/b protein complex of photosystem II (LHC II) was studied by the one-colour pump-probe technique with femtosecond time resolution. After exciting Chl b by 638 nm beam, the dynamic behaviour shows that the ultrafast energy transfer from Chl-b at positions of B2, B3, and B5 to the corresponding Chl-a molecules in monomeric subunit of LHC II is in the time scale of 230 fs. While with the excitation of Chl a at 678 nm, the energy transfer between excitons of Chl-a molecules has the lifetime of about 370 fs, and two other slow decay components are due to the energy transfer between different Chl-a molecules in a monomeric subunit of LHC II or in different subunits, or due to change of molecular conformation.
YANG Yi;GUO Li-Jun;LIU Yuan;LIU Wei-Min;ZHU Rong-Yi;QIAN Shi-Xiong;XU Chun-He. Energy Transfer in Isolated LHC II Studied by Femtosecond Pump-Probe Technique[J]. 中国物理快报, 2003, 20(4): 589-592.
YANG Yi, GUO Li-Jun, LIU Yuan, LIU Wei-Min, ZHU Rong-Yi, QIAN Shi-Xiong, XU Chun-He. Energy Transfer in Isolated LHC II Studied by Femtosecond Pump-Probe Technique. Chin. Phys. Lett., 2003, 20(4): 589-592.
2003, Vol. 20 
