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详细研究了芳环在主链上不含脂肪族柔性链的高分子聚砜在二氯甲烷中的荧光光谱。由荧光谱的浓度依赖关系可知聚砜在二氯甲烷中能形成分子间的激基缔台物;由极稀的聚砜的二氯甲烷溶液(5.21×10~(-7)M)的荧光谱看出没有任何种类的激基缔合物产生,但经紫外光照射会形成分子内的激基缔合物。由激基缔合物的荧光强度随温度的变化关系可得出活化能和键能分别为2.55和2.18 kcal/mol。
The fluorescence spectra of polymer polysulfones without aromatic flexible chains in the main chain of aromatic ring in dichloromethane were studied in detail. From the concentration dependence of the fluorescence spectrum, it can be seen that polysulfone can form an intermolecular excimer in dichloromethane; the fluorescence of a very dilute polysulfone solution in dichloromethane (5.21 × 10 -7 M) The spectrum shows that there is not any kind of exciplex generated, but the formation of intramolecular exciplex by ultraviolet light irradiation. From the relationship between the fluorescence intensity of excimer and temperature, the activation energy and bond energies are 2.55 and 2.18 kcal / mol, respectively.