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Issue 11, 2015
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The origin of surfactant amphiphilicity and self-assembly in protic ionic liquids

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Abstract

The nature of amphiphilic self-assembly in alkylammonium protic ionic liquids (PILs) is examined by systematically varying the ionic structure and composition, H-bonding capacity, and nanostructure of both the PIL and micelle-forming cationic surfactant, and contrasted with self-assembly in water. Using small-angle neutron scattering, micelle structure and concentrations are determined for primary – quaternary dodecylammonium salts in nitrate and thiocyanate PILs. While the solvophobic driving force depends only on the average polarity of the PIL, surprisingly strong, specific interactions of the head group and counterion with the PIL H-bond network are found. This suggests the importance of developing designer amphiphiles for assembling soft matter structures in PILs.

Graphical abstract: The origin of surfactant amphiphilicity and self-assembly in protic ionic liquids

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Article information


Submitted
04 Apr 2015
Accepted
04 Aug 2015
First published
04 Aug 2015

This article is Open Access
All publication charges for this article have been paid for by the Royal Society of Chemistry

Chem. Sci., 2015,6, 6189-6198
Article type
Edge Article

The origin of surfactant amphiphilicity and self-assembly in protic ionic liquids

A. Dolan, R. Atkin and G. G. Warr, Chem. Sci., 2015, 6, 6189
DOI: 10.1039/C5SC01202C

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