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本文研究了聚苊与对苯二甲酸二甲酯形成的三分子激基复合物。提出了稀溶液柔性聚合链内形成三分子激基复合物的理论模型,推导了单分子荧光、激基复合物荧光和三分子荧光随时间的衰减符合双指数规律。估算了该体系中,激基复合物形成速度常数,k_3=6.0×10~9s~(-1)(mol/L)~(-1);三分子激基复合物形成速度常数,k_6=5.2×10~7s~(-1)。并从非晶态膜和分子内激基复合物的荧光寿命证明了三分子激基复合物的形成机理:
In this paper, we studied the polyplex and dimethyl terephthalate formed by the three excimer complex. A theoretical model of the formation of a three-molecule exciplex in a dilute solution flexible polymeric chain was proposed, and the decay of single-molecule fluorescence, extrinsic complex fluorescence and three-molecule fluorescence over time was in accordance with the double exponential law. The formation rate constant of exciplex was estimated, k_3 = 6.0 × 10 ~ 9s -1 (mol / L) -1. The formation rate constant of the exciplex was k_6 = 5.2 × 10 ~ 7s ~ (-1). The formation mechanism of the three-molecule exciplex was demonstrated from the fluorescence lifetime of the non-crystalline film and the intramolecular exciplex: