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

Chem. J. Chinese Universities ›› 1991, Vol. 12 ›› Issue (4): 528.

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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)

Department, of Chemistry, Xiamen Unuvrsity, Xiainen, 361005

Received:1989-10-18 Online:1991-04-24 Published:1991-04-24

Abstract

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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Jiang Yun-bao, Xu Jin-gou, Chen Guo-zhen(K. C. Chen). 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[J]. Chem. J. Chinese Universities, 1991, 12(4): 528.

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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

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