高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (7): 1067.

• 研究简报 • 上一篇    下一篇

4-硝基喹啉氧化物激发三重态与甲硫氨酸二肽之间的电子转移

徐业平1, 宋钦华1, 俞书勤1, 陈从香1, 马兴孝1, 林维真2, 姚思德2   

  1. 1. 中国科学技术大学化学物理系, 中国科学院选键化学开放实验室, 合肥 230026;
    2. 中国科学院上海原子核研究所辐射化学开放实验室, 上海 201800
  • 收稿日期:1999-08-25 出版日期:2000-07-24 发布日期:2000-07-24
  • 通讯作者: 徐业平(1954年出生),男,博士,现在安徽省检验检疫局工作.E-mail:qhsong@ustc.edu.cn E-mail:qhsong@ustc.edu.cn

Reaction of Electron Transfer from Methionine-containing Dipeptides to Triplet 4-Nitroquinoline 1-Oxide

XU Ye-Ping1, SONG Qin-Hua1, YU Shu-Qin1, CHEN Cong-Xiang1, MA Xing-Xiao1, LIN Wei-Zhen2, YAO Si-De2   

  1. 1. Department of Chemical Physics, Open Laboratory of Selected-Bond Chemistry of Chinese Academy of Sciences, University of Science and Technology of China, Hefei 230026, China;
    2. Laboratory of Radiation Chemistry, Shanghai Institute of Nuclear Research, Chinese Academy of Sciences, Shanghai 201800, China
  • Received:1999-08-25 Online:2000-07-24 Published:2000-07-24

关键词: 硝基喹啉氧化物, 含甲硫氨酸的肽, 激光闪光光解, 电子转移

Abstract: Photochemical reactions of 4-nitroquinoline 1-oxide(4NQO) with methionine-containing dipeptides Met-Met, Ala-Met, Met-Lue and Met-Gly have been studies by using 248 nm laser flash photolysis. The formation of α-alkyl radicals was observed, and their rate constants of formation were obtained. The reaction mechanism that the α-alkyl radicals produced via an electron transfer process between triplet 4NQO and methionine-containing dipeptide was proposed.

Key words: 4-Nitroquinoline1-oxide, Methionine-containing dipeptides, Laser flash photolysis, Electron transfer

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