%0 Journal Article
%T Observation of ultrafast excited-state dynamical evolution in B800 absorption band of light harvesting 2 (LH2) extracted from Rb. Sphaeroides 601<br>紫细菌Rb.Sphaeroides 601外周捕光天线(LH2) B800吸收带的超快动力学研究
%A Liu Wei-Min
%A Liu Yuan
%A Xu Chun-He
%A Qian Shi-Xiong
%A <br>刘伟民
%A 刘 源
%A 徐春和
%A 钱士雄
%J 物理学报
%D 2006
%I 
%X Photodynamics of two kinds of peripheral antenna complexes light harvesting 2 (LH2) of Rb. Sphaeroides 601, namely the native LH2 and B800-released LH2, where B800-BChls were partially or completely removed with different pH treatments, were studied using femtosecond pump-probe technique at different laser wavelengths. The obtained results for these samples demonstrate that under the excitation around B800 absorption band, the photoabsorption and photobleaching dynamics are caused by the direct excitation of upper excitonic levels of B850 and excited state of B800 pigments, respectively.
%K peripheral light harvesting complexes (LH2) from Rb
%K Sphaeroides 601
%K B800 partially or completely released LH2
%K excited-state dynamical evolution
%K femtosecond pump-probe<br>紫细菌外周捕光天线LH2，
%K 部分和全部去除B800分子LH2，
%K 激发态动力学的演变，
%K 飞秒抽运探测
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=62CE78AB7AF7EB44&yid=37904DC365DD7266&vid=E514EE58E0E50ECF&iid=9CF7A0430CBB2DFD&sid=38586190A9A9CC61&eid=0F93B0B154DE3772&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=20