Aggregation and micelle formation of ionic liquids in aqueous solution

被引：276

作者：

Miskolczy, Z ^{[1
]}

Sebök-Nagy, K ^{[1
]}

Biczók, L ^{[1
]}

Göktürk, S ^{[1
]}

机构：

[1] Hungarian Acad Sci, Dept Mol Spect, Chem Res Ctr, H-1525 Budapest, Hungary

来源：

CHEMICAL PHYSICS LETTERS | 2004年 / 400卷 / 4-6期

基金：

匈牙利科学研究基金会;

关键词：

D O I：

10.1016/j.cplett.2004.10.127

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Association of ionic liquids possessing n-octyl moiety either in the cation or in the anion has been studied in aqueous solution with conductivity and turbidity measurements as well as using 2-hydroxy-substituted Nile Red solvatochromic probe. 1-Butyl-3methylimidazolium octyl sulfate was found to act as a surfactant above 0.031 M critical micelle concentration. In contrast, 1-methyl-3-octylimidazolium chloride produced inhomogeneous solution of larger aggregates, which were dissolved on the addition of more than 2:1 molar excess of sodium dodecyl sulfate (SDS) due to mixed micelle formation. Even small amount (<10 mM) of ionic liquids could markedly reduce the polarity of the Stern layer of SDS micelle. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：296 / 300

页数：5

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