物理化学学报 >> 1993, Vol. 9 >> Issue (04): 461-465.doi: 10.3866/PKU.WHXB19930408

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稳态荧光猝灭法确定胶束聚集数的研究

陈景元; 王果庭; 刘金柱   

  1. 山东大学胶体与界面化学研究所，济南 250100
  • 收稿日期:1992-02-01 修回日期:1992-05-04 发布日期:1993-08-15
  • 通讯作者: 陈景元

Investigation on the Determination of Micellar Aggregation Number by Steady-state Fluorescence Quenching Method

Chen Jing-Yuan; Wang Guo-Ting; Liu Jin-Zhu   

  1. Institute of Colloid and Interface Chemistry, Shandong University, Jinan 250100
  • Received:1992-02-01 Revised:1992-05-04 Published:1993-08-15
  • Contact: Chen Jing-Yuan

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摘要： 选用芘作为荧光探针, 二苯酮作为猝灭剂, 以稳态荧光猝灭法测定了十二烷基硫酸钠、十二烷基磺酸钠和十六烷基三甲基演化铵的胶束聚集致, 并对其测定胶束聚集数方法的有效范围进行了讨论. 实验结果表明, 选择的探针-猝灭剂体系适用于稳态荧光猝灭法确定阴离子和阳离子表面活性剂的胶束浓度和聚集数.

关键词: 荧光光谱, 表面活性剂, 胶束聚集数

Abstract: The micellar aggregation numbers of sodium dodecyl sulfate(SDS), sodium dodecyl sulfonate(AS) and cetyltrimethylammonium bromide(CTAB) has been determined from steady-state fluorescence quenching method, using pyrene(PYR) as probe and diphenyketone(DPK) as quencher. The range of validity of the method used in this work for the determination of micelle aggregation number is discused. The results obtained show that this probe-quencher system applies to the determination of micelle concentrations and aggregation number of anionic and cationic micelles.

Key words: Fluorescence spectra, Surfactant, Micellar aggregation number