高等学校化学学报

高等学校化学学报 ›› 1998, Vol. 19 ›› Issue (2): 257.

• 论文 • 上一篇    下一篇

全合成双分子膜分子激发态能量转移的研究

李国文1, 梁映秋2, 吴立新2, 师同顺3, 沈家骢1   

  1. 1. 吉林大学理论化学研究所, 长春, 130023;
    2. 南京大学化学系, 南京, 210093;
    3. 吉林大学化学系, 长春, 130023
  • 收稿日期:1996-11-20 出版日期:1998-02-24 发布日期:1998-02-24
  • 通讯作者: 李国文,联系人:男,52岁,博士,副教授.
  • 作者简介:李国文,男,52岁,博士,副教授.

Studies on Excitation Energy Transfer of Completely Synthesized Bilayer Membrane Containing Biphenyl Moiety

LI Guo-Wen1, LIANG Ying-Qiu2, WU Li-Xin2, SHI Tong-Shun3, SHEN Jia-Cong1   

  1. 1. Institute of Theoretical Chemistry, Jilin University, Changchun, 130023;
    2. Department of Chemistry, Nanjing University, Nanjing, 210093;
    3. Department of Chemistry, Jilin University, Changchun, 130023
  • Received:1996-11-20 Online:1998-02-24 Published:1998-02-24

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被引次数

5

摘要： 研究了全合成双分子膜内的分子激发态能量转移行为,给体为囊泡双亲分子上的联苯生色基,受体是通过静电相互作用结合在囊泡表面上的荧光黄阴离子.荧光黄猝灭联苯的荧光强度符合Sern-Volmer猝灭定律.探讨了囊泡在能量转移过程中的组织作用、转移效率与机制.通过研究由静电作用结合在囊泡表面上的荧光黄给体和四苯基卟啉受体间的能量转移,改善了光的输出,扩展了光波的覆盖范围.全合成双分子膜是能量转移的有效介质和良好的膜模拟剂.

关键词: 双分子膜, 囊泡, 荧光, 能量转移, 组织作用

Abstract: Intermolecular excitation energy transfer has been investigated in the binary mixture system mediated by completely synthesized bilayer membrane containing biphenyl moiety(DBBTAB). The donor, a biphenyl group, was embeded in the interior of the bilayer membrane. The acceptor, fluorescein sodium salt, two negatively charged polar groups, was attracted electrostatically to the positively charged surface of the DBBTAB vesicles. The efficiency of the energy transfer was found to be good. Fluorescein quenched the fluorescence intensity of the biphenyl, which fitted a Stern-Volmer relationship over the concentration ranges of 0～8×10-5 mol/L. The functionallization of the vesicles in the energy transfer was explored, and energy transfer mechanism was discussed too. Furthermore, energy transfer from the fluorescein donor to tetraphenylporphyrin sulfated sodium acceptor, was also observed in the same system. The energy transfer improved light efficiency and extended the spectral region. The experiment results imply that the DBBTAB vesicle is better media for energy transfer in dye laser and good membrane mimic agent.

Key words: Bilayer membrane, Vesicle, Fluorescence, Energy transfer, Organization

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