Kudzmauskas S, Valkunas L, Borisov A Y
J Theor Biol. 1983 Nov 7;105(1):13-23. doi: 10.1016/0022-5193(83)90421-6.
A theory of the excitation kinetics in the bacteria photosynthetic unit with regard to its globular structure is presented. It assumes that the excitation transfer between globulae is carried out by means of the mechanism of incoherent excitons, at the same time considering the finite time of the excitation fixation in the reaction center. A method of local perturbations is used with a view to finding a solution to the given problem. The expressions obtained for the fluorescence decay time and its quantum yield are discussed in connection with the multiple experiments considering the cubic as well as the hexagonal probable structure of the photosynthetic unit. The analysis given shows that the period of the excitation transfer between globulae equals 10 to 100 psec and the number of the globulae is less than 35. These conclusions fall in with the initial assumption of the energy transfer between globulae by incoherent excitons. Without considering the globularity, the consistency of the theory with experimental data becomes difficult.
提出了一种关于具有球状结构的细菌光合单位中激发动力学的理论。该理论假设球状颗粒之间的激发转移是通过非相干激子机制进行的，同时考虑了反应中心中激发固定的有限时间。为了找到给定问题的解决方案，使用了局部微扰法。结合考虑光合单位立方和六方可能结构的多次实验，讨论了所获得的荧光衰减时间及其量子产率的表达式。所给出的分析表明，球状颗粒之间激发转移的周期为10到100皮秒，球状颗粒的数量小于35。这些结论与球状颗粒之间通过非相干激子进行能量转移的初始假设相符。如果不考虑球状结构，该理论与实验数据的一致性将变得困难。
