环糊精对α，ω－双香豆素长链化合物分子内激基缔合物形成的影响

THE INFLUENCE OF CYCLODEXTRIN ON THE PHOTOPHYSICAL PROPERTIES OF α,ω-BISCOUMARIN LONG-CHAIN COMPOUNDS

本文借助荧光光谱、吸收光谱、激发光谱以及单光子记数技术，通过环境效应、浓度效应、温度效应详细研究了环糊精对α，ω－双香豆素长链化合物分子内激基缔合物形成的影响，结果表明β－ＣＤ仅能加强香豆素单体的荧光发射与寿命，而γ－ＣＤ则可降低其形成激基缔合物的活化能，同时使其寿命得以延长．

With the aids of different spectra and the single photon counting technique,the effect of concentration,temperature, and environment on the excimer formation of α,ω-biscoumarin long chain compound in the presence of CD have been investigated in this work.Results indicate that the influence of cyclodextrin on the photophysical properties of title compounds is different,i.e.,β-CD only enhances the fluorescence intensity of the coumarin monomer, whereas γ-CD could decrease the activation energy for the excimer formation as well as extend its life time.