摘要
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 laser flash photolysis study of p-methyl-calix [4]arene at 248 nm was carried out in cyclohexane at room temperature. The triplet state of the p-methyl - calix [4] arene was observed at ca. 300nm and 400urn, in the absorption spectra for the first time. From the kinetic analysis, the mechanism of the formation of the triplet has been Proposed.
出处
《四川大学学报（自然科学版）》
CAS
CSCD
北大核心
2000年第1期69-72,共4页
Journal of Sichuan University(Natural Science Edition)
基金
国家自然科学基金!29602005
关键词
芳烃
激光光解
三线态
p-methyl-calix [4]arene
laser photolysis
triplet state
