高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (7): 1131.

• 研究简报 • 上一篇    下一篇

卟啉与吩噻嗪分子间和分子内的光致相互作用

贺学忠1, 周亚琳2, 张曼华2, 沈涛2   

  1. 1. 清华大学生物科学与技术系, 北京 100084;
    2. 中国科学院感光化学研究所, 北京 100101
  • 收稿日期:1998-07-14 出版日期:1999-07-24 发布日期:1999-07-24
  • 通讯作者: 张曼华
  • 作者简介:贺学忠,男,28岁,博士.
  • 基金资助:

    国家自然科学基金(批准号:59573010)资助课题

Photoinduced Intermolecular and Intramolecular Actions Between Phenothiazine and Porphyrin

HE Xue-Zhong1, ZHOU Ya-Lin2, ZHANG Man-Hua2, SHEN Tao 2   

  1. 1. Department of Biological Science and Biotechnology, Tsinghua University, Beijing, 100084;
    2. Institute of Photographic Chemistry, the Chinese Academy of Sciences, Beijing, 100101
  • Received:1998-07-14 Online:1999-07-24 Published:1999-07-24

摘要: 光动力疗法(PDT)药物研究的一个重要分支是合成新的含卟啉结构的化合物,以获得较好的癌组织细胞定位能力和较强的组织穿透能力.Mehta等发现卟啉和一些具有细胞内识别能力的抗癌分子组成的二元化合物表现出较强的光诱导核酸酶活性.

关键词: 卟啉-吩噻嗪二元化合物, 电子转移, 能量转移

Abstract: Adyad of phenothiazine and porphyrin and their reference model compounds were synthesized. The intermolecular and intramolecular photoinduced singlet energy transfer and electron transfer were studied. The results indicated that the intermolecular ground state action between PorBu and PTZBu is negligible, the excited PTZBu partly transfer its singlet energy to PorBu. Exciting PorBu, the intermolecular electron transfer occurs with a rate 1.11×1010s-1·mol-1·L. For exciting PTZ moiety in dyad, due to PTZ′s lower Φ and smaller ε, it could not transfer its singlet energy to porphyrin. Exciting the porphyrin moiety could induce electron transfer from phenothiazine moiety to porphyrin moiety.

Key words: Phenothiazine and porphyrin dyad, Electron transfer, Energy transfer

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