叶绿素α二聚体激发三重态吸收谱及其弛豫动力学过程的研究  

Investigation of excited triplet absorption spectrum and relaxation kinetics of dimeric chlorophyll a

作　　者：刘一先[1] J A Koningstein 

机构地区：[1]复旦大学物理系,200433 [2]The Ottawa-Carleton Chemistry Institute, Department of Chemistry, Carleton University, Ottawa, Ont

出　　处：《中国激光》1992年第1期51-56,共6页Chinese Journal of Lasers

摘　　要：本文报道用时间分辨差分吸收法测量叶绿素α二聚体激发三重态的吸收谱的实验装置和实验结果。给出了三重态受主能级T_1(A)和施主能级T_1(D)的吸收极大值和次极大值以及它们的寿命。The experimental set-up of time resolved, differential absorption used to mreasure the excited triplet absorption spectrum of dimerio chlorophyll a and the experimental results are reported. The peak absorption of the excited triplet of T1(4) and T1(D)are at 462nm and 466nrn,and the subsidiary maxima at 510nm and 526nm, respectively. The triplet lifetime of T1(A), T1(D), measured with a time-resolved double-beam method,is A/T=9.8+0.5,us and D/T=80+4us, respectively.

关 键 词：叶绿素二聚体 激发 弛豫动力学 

分 类 号：O644.18[理学—物理化学]