高等学校化学学报 ›› 1991, Vol. 12 ›› Issue (4): 528.

• 论文 • 上一篇    下一篇

一类新的表面活性剂:长链烷基三苯基鏻盐(Ⅰ)--正十二烷基三苯基溴化鏻的合成及其表面活性初探

江云宝, 许金钩, 陈国珍   

  1. 厦门大学化学系, 361005
  • 收稿日期:1989-10-18 出版日期:1991-04-24 发布日期:1991-04-24
  • 通讯作者: 江云宝

A New Kind of Surfactant:Long-Chain-Alkyltriphenylphosphonium Salt (Ⅰ)--The Synthesis of n-Dodecyltriphenylphosphonium Bromide and the Preliminary Study of Its Surface Activity in Aqueous Solution

Jiang Yun-bao, Xu Jin-gou, Chen Guo-zhen(K. C. Chen)   

  1. Department, of Chemistry, Xiamen Unuvrsity, Xiainen, 361005
  • Received:1989-10-18 Online:1991-04-24 Published:1991-04-24

摘要: 合成了正十二烷基三苯基溴化鏻,并用荧光探针法研究了它在水溶液中的表面活性。利用芘作为荧光探针,根据其单体荧光光谱中第3与第1振子带强度之比与其所处环境的极性之间的相关性,测定了该表面活性剂的临界胶束浓度为2.08×10-3mol/L,它在水溶液中胶束内核的微极性为16.1(以介电常数表示)。

关键词: 长链烷基三苯基鏻, 合成, 表面活性, 胶束性质, 荧光探针法

Abstract: The synthesis of n-dodecyltriphenylphosphonium bromide was described and its surface activity in aqueous solution was studied with the fluorescent probe method. Using pyrene as a fluorescent probe based on the relativity between the intensity ratio of the third vibronic band to the first vibronic band in its monomer fluorescence spectrum and the polarity of its environment, the CMC of the newly synthesized surfactant was determined to be 2. 08×10-3moI/L, and the micropolarity of the micellar core was obtained to be 16. 1 (expressed by the dielectric constant).

Key words: Long-chain-alkyltriphenylphosphonium, Synthesis, Surface activity, Micellar property, Fluorescent probe

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