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1963年,Weller等发现激基复合物以后,他提出了在形成激基复合物时,伴随着电子的转移,即在激发态时,电子由电子给体的最高满轨道转移到电子接受体的最低空轨道。他在总结形成激基复合物的条件时指出,“需要一个电离能低的物质作为电子给体,一个电子亲和力高的物质作为电子受体”。这一概念已被很多人采用,并用以研究激基复合物的其它性质,但是这一理论有它的缺点,它只考虑分子总体的性质,根本没有考虑在分子中电荷不同的
In 1963, when Weller et al. Found an exciplex, he proposed that in the formation of the exciplex, accompanied by the transfer of electrons, that is, in the excited state, electrons are transferred from the highest full orbit of the electron donor to the electron acceptor Lowest empty track. In summarizing the conditions for the formation of an exciplex, he pointed out that “there is a need for a substance with a low ionization potential as an electron donor, a substance with a high electron affinity as an electron acceptor.” This concept has been adopted by many people and has been used to study other properties of exciplexes, but this theory has its drawbacks, which take into account only the general properties of the molecule, without regard to the different charges in the molecule