高等学校化学学报 ›› 1991, Vol. 12 ›› Issue (10): 1361.

• 论文 • 上一篇    下一篇

表面活性剂胶束化过程中对芘的荧光猝灭

江云宝, 许金钩, 陈国珍   

  1. 夏门大学化学系, 厦门, 361005
  • 收稿日期:1990-06-08 出版日期:1991-10-24 发布日期:1991-10-24
  • 通讯作者: 江云宝

Quenching of Pyrene Fluorescence in the Micellization Process of Some Ionic Surfactants

Jiang Yun-bao, Xu Jin-gou, Chen Guo-zhen   

  1. Department of Chemistry, Xiamen University, Xiamen, 361005
  • Received:1990-06-08 Online:1991-10-24 Published:1991-10-24

摘要: 本文研究了烷基三苯基盐及N-烷基吡啶盐胶束化过程中对芘的荧光猝灭。讨论了表面活性剂分子在水溶液中的优势构型以及芘在胶束中的增溶位置。简单说明了胶束增敏发光分析的机理。研究表明,胶束形成前后荧光猝灭均符合Stern-Volmer方程。

关键词: 胶束化过程, 荧光猝灭, 发光增敏机理

Abstract: The quenching of pyrene fluorescence in the micellization process of alkyltriphenylphosphonium bromide and N-alkylpyridinium bromide is described. It is found that the fluorescence quenching obeys the Stern-Volmer equation, the surfactant with a longer alkyl chain has a larger quenching constant before the formation of micelle, and the quenching constant before the formation of micelle is lower than that after the formation. Ajump is noted in the Stern-Volmer curve before and after the formation of micelle and the critical micelle concentrations of the studied surfactants accordingly obtained are consistent with the reported values. The preferential configuration of surfactant molecule in aqueous solution and the solubilization position of pyrene in micelle are discussed. Also included is a brief discussion of the mechanism of micelle enhancement of luminescence analysis.

Key words: Micellization process, Fluorescence quenching, Luminescence enhancement mechanism

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