标题： 有机半导体中单线态裂变动力学的特定特征。 动力学曲线交叉的影响 显示英文标题

标题： Specific features of the kinetics of singlet fission in organic semiconductors. The effect of kinetic curves crossing

摘要： 实验研究了某些有机半导体中单线态裂变(SF)过程的磁场依赖动力学，即激发单线态(S_1)状态分裂为三重态激子对。这些研究揭示了所得动力学曲线的重要特征，该特征与来自S_1态的荧光强度I(t)的衰减有关。在不同磁场下测得的动力学曲线被发现彼此交叉。我们表明，这种动力学曲线交叉(KCC)效应是双生凝聚相反应的一般特征，这是由过程动力学方案的简单特征性质引起的。详细分析了KCC效应的一些特征，并使用了一些SF过程的模型。 显示英文摘要

摘要： Experimental investigations of magnetic field dependent kinetics of singlet fission (SF)processes in some organic semiconductors [i.e. splitting of excited singlet (S_1) state into a triplet exciton pair] have revealed the important specific feature of obtained kinetic curves, associated with decaying intensities I(t) of fluorescence from S_1-state. Kinetic curves, measured in different magnetic fields, are found to cross each other. We show that this kinetic curves crossing (KCC) effect is a general feature of geminate condensed phase reactions, resulting from simple characteristic properties of kinetic schemes of processes. Specific features of the KCC-effect are analyzed in detail with some models of SF-processes.