关于N-苯基-萘胺的光分解过程

PHOTOCHEMICAL DECOMPOSITION OF N PHENYL NAPHTHYLAMINES IN BENZENE SOLUTION

采用ＥＳＲ方法研究了α－和β－Ｎ－苯基取代萘胺在苯溶液中的分解过程及其反应中间体．结果表明，有三种自由基被检测到，即Ｈ·，Ｃ１０Ｈ·７和Ｃ６Ｈ５（Ｈ）Ｎ·自由基．其中值得注意的是萘自由基的生成，这意味着在一定的光解条件下，苯基萘胺分子中的Ｃ－Ｎ键可发生断裂，萘基可从氮原子上断裂下来．同时，通过调节自旋捕捉剂的浓度与添加光敏剂，可以明显地改变三种自旋捕获物的相对生成比例，借此得到三种自由基结构与光稳定性的信息．此外，本文还结合量子化学的计算讨论了此光解过程各种自由基生成的可能性．

The photolytic processes of N phenyl α naphthylamine and N phenyl β naphtylamine in benzene solution have been studied by ESR method. Three intermediates, H ·, C 6H 5(H)N · and C 10 H 7 · free radicals, could be detected in the photoreaction system. It is interesting that the carbon centered free radicals are produced in the processes of photolysis, which implies that the cleavage of C N bond takes place and C 10 H 7 · free radicals are produced. Furthermore, research results also show that the ratio of spin adductings can be changed by adjusting the relative concentration of spin trap and the addition of photosensitizer C 6H 5COC 6H 5. In order to ascertain the mechanism of photoreaction processes, some semi empirical calculations of quantum chemistry were also carried out.