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研究了对一甲基杯[4]芳烃在环己烷和乙腈中的激光光解行为.在环己烷中观察到 420nm及540nm附近的杯芳烃激发三线态吸收峰,极性溶剂腈对该三线态有稳定作用,吸收 峰显著红移.其三线态双峰特征与不带取代基的杯[4]芳烃相近.同时发现在330nm附近杯芳烃 自由基吸收峰,其动力学分析表明,该自由基按二级动力学衰减.
The photolysis of 1-methylcalix [4] arene in cyclohexane and acetonitrile was studied. In cyclohexane, the triplet absorptions of calixarene near 420nm and 540nm were observed. The polar solvent nitrile had a stabilizing effect on the triplet state and a significant red shift of the absorption peak. Its triplet state bimodal characteristics are similar to those of unsubstituted calix [4] arene. At the same time, it was found that the calixarene free radical absorption peak near 330 nm showed that the free radical attenuated by second order kinetics.