关于N-苯基-萘胺的光分解过程

波谱学杂志 ›› 1998, Vol. 15 ›› Issue (3): 211-216.

关于N-苯基-萘胺的光分解过程

孙健, 陈德文, 张小东, 张启元

中国科学院化学研究所, 北京 100080

收稿日期:1997-10-24 修回日期:1998-02-23 出版日期:1998-06-05 发布日期:2018-01-13
作者简介:孙健,女,26岁,博士
基金资助:
国家自然科学基金

PHOTOCHEMICAL DECOMPOSITION OF N-PHENYL-NAPHTHYLAMINES IN BENZENE SOLUTION

Sun Jian, Chen Dewen, Zhang Xiaodong, Zhang Qiyuan

Institute of Chemistry, The Chinese Academy of Sciences, Beijing 100080

Received:1997-10-24 Revised:1998-02-23 Online:1998-06-05 Published:2018-01-13

摘要/Abstract

摘要： 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C₆H·₅(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.

关键词: 苯基萘胺, 光分解, 电子自旗旋共振, 裂解能

Abstract: 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·, C₆H₅(H)N· and C₁₀H·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 C₁₀H·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 C₆H₅COC₆H₅. In order to ascertain the mechanism of photoreaction processes, some semi-empirical calculations of quantum chemistry were also carried out.

Key words: N-phenyl-naphthylamine, Photolysis, ESR, Cleavage energy

孙健, 陈德文, 张小东, 张启元. 关于N-苯基-萘胺的光分解过程[J]. 波谱学杂志, 1998, 15(3): 211-216.

Sun Jian, Chen Dewen, Zhang Xiaodong, Zhang Qiyuan. PHOTOCHEMICAL DECOMPOSITION OF N-PHENYL-NAPHTHYLAMINES IN BENZENE SOLUTION[J]. Chinese Journal of Magnetic Resonance, 1998, 15(3): 211-216.