【摘要】 <正> 我们曾根据激基复合物的溶剂效应论证了激基复合物应分为两类,以及证明在电子给体和电子受体的电离能和电子亲合力都几乎相等时,与电子给体相连的侧基和与电子受体相连的侧基之间的相互作用,对形成激基复合物起重要作用。本文报道即使在电离能和电子亲合力相差都比较大的体系中,侧基对形成激基复合物也有很大影响。更多还原

【Abstract】 Fluorescence of carbazole (Cz) was quenched by dimethyl terephthalate (DMTP). In opposition to the result obtained in the system of DMTP-ethylcarbazole (EtCz), no exciplex fluorescence can be observed. The difference of exciplex formation ability between DMTP-EtCz and DMTP-Cz can be qualitatively explained by the idea developed by us. Our idea can be described as that the exciplex formation ability is not only dependent on the ionization potential of the donor and electron affinity of the acceptor but dependent on the interaction between the side groups attached to the chromophores of the donor and acceptor also.更多还原