波谱学杂志 ›› 1989, Vol. 6 ›› Issue (2): 183-186.

• 研究论文 • 上一篇    下一篇

双吡啶盐(PQ++)与异丙醇的光化还原反应研究

周建威, 陈德文, 杨玉昆, 徐广智   

  1. 中国科学院化学研究所;北京分子动态及稳态结构国家实验室
  • 收稿日期:1988-04-10 出版日期:1989-06-05 发布日期:2018-01-22
  • 基金资助:
    国家自然科学基金资助课题

RESEARCH ON THE PHOTOREDUCTION REACTION OF PARAQUAT SALTS WITH iso-PROPYL ALCOHOL

Zhou Jianwei, Chen Dewen, Yang Yukun, Xu Guangzhi   

  1. Ihstitute of Chemistry, Academia Sinica, Beijing
  • Received:1988-04-10 Online:1989-06-05 Published:2018-01-22

摘要: 本文用自由基捕捉技术与ESR相结合的方法对五种PQ++-异丙醇体系的光激发均相电子转移过程的研究结果表明PQ++可被异丙醇自由基单电子还原生成PQ自由基,如体系中有二苯酮存在,则电子转移反应速率大大增加.

关键词: 双吡啶盐, 自旋捕捉, 自由基, 电子转移

Abstract: The homogeneous photoexcited electron-transfer of PQ++-isopropyl alcohol systems in benzene solution was studied by means of spin trapping-ESR technique. Results show that PQ++ may be reduced, by the free radical (CH3)2ĊOH, to a free radical PQ·+; the rate of electron transfer can be accelerated greatly when benzophcnone is added to the photoreaction systems.

Key words: Paraquat salts, Spin trapping, Electron-transfer, Free radical