中华医学超声杂志

应用化学 ›› 1996, Vol. 0 ›› Issue (5): 17-20.

• 研究论文 • 上一篇    下一篇

水溶液中降冰片二烯衍生物敏化光异构化反应

王雪松, 张宝文, 曹怡   

  1. 中国科学院感光化学研究所 北京 100101
  • 收稿日期:1995-12-05 修回日期:1996-05-04 出版日期:1996-10-10 发布日期:1996-10-10
  • 基金资助:
    国家自然科学基金

Sensitized Photoisomerization of a Norbornadiene Derivative in Aqueous Solution

Wang Xuesong, Zhang Baowen, Cao Yi   

  1. Institute of Photographic Chemistry, Chinese Academy of Sciences, Beijing 100101
  • Received:1995-12-05 Revised:1996-05-04 Published:1996-10-10 Online:1996-10-10

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摘要： 研究了水溶液中双环[2.2.1]-2,5-庚二烯-2,3-二羧酸在吖啶黄(AY)和吖啶橙(AO)的敏化作用下的光诱导价键异构化反应。量子效率分别为0.33(AY)和0.31(AO).采用安全廉价的水为反应介质,通过荧光猝灭和热力学讨论提出了电子转移反应机理。

关键词: 双环－庚二烯－二羧酸, 吖啶黄, 吖啶橙, 光诱导价键异构化反应, 光诱导电子转移

Abstract: In an aqueous solution and under the sensitization of acridine yellow(AY) or acridine orange(AO), the photoisomerization of bicyclo [2.2.1] hepta-2,5-diene-2,3-dicarboxylic acid(N) was investigated. The quantum yields of sensitized photoisomerizations for AY and AO are 0.33 and 0.31, respectively. Since the reaction medium is water which is safe and inexpensive, the sensitizers can harvest sunlight effectively and the preparation of water-soluble norbornadiene derivative is very easy, this photo reaction system is promising for solar energy storage. A mechanism involving electron transfer was proposed from the analysis of fluorescence quenching and thermodynamic discussion.

Key words: bicyclo-heptadiene-dicarboxylic acid, acridine yellow, acridine orange, photoinduced valence isomerization, photoinduced electron transfer

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