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Surface Active Agents

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Surfactants, named for their behavior at interfaces, positively adsorb at the interfaces of two phases, reducing interfacial tension. Their versatility as emulsifiers, detergents, and foaming agents stems from this ability. Surfactants, often termed amphiphiles, share the property of amphipathy, with molecules having both hydrophilic and hydrophobic portions. The hydrophilic part is called the head, and the hydrophobic part, including an elongated alkyl substituent, forms the tail.Surfactants...

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Related Experiment Video

Updated: May 14, 2026

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding

Published on: March 24, 2018

New catanionic surfactants with ionic liquid properties.

Paul Brown¹, Craig P Butts, Julian Eastoe

¹School of Chemistry, University of Bristol, Cantock's Close, Bristol, UK.

Journal of Colloid and Interface Science

|January 29, 2013

Summary

This summary is machine-generated.

New tunable surfactant ionic liquids were synthesized by avoiding harmful components. These novel materials exhibit desirable physico-chemical properties for various applications.

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Last Updated: May 14, 2026

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding

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Published on: March 24, 2018

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Preparation of Monodomain Liquid Crystal Elastomers and Liquid Crystal Elastomer Nanocomposites

Published on: February 6, 2016

Area of Science:

Materials Science
Physical Chemistry
Supramolecular Chemistry

Background:

Ionic liquids (ILs) are salts with low melting points, offering unique solvent properties.
Catanionic surfactants, formed from oppositely charged surfactant ions, can self-assemble into various structures.
Traditional ILs often contain environmentally concerning halide or imidazolium groups.

Purpose of the Study:

To synthesize and characterize novel catanionic surfactants with inherent ionic liquid properties.
To investigate the physico-chemical characteristics of these new surfactant ionic liquids (SILs).
To develop tunable SILs by avoiding problematic chemical moieties.

Main Methods:

Systematic synthesis of new catanionic compounds.
Characterization of physico-chemical properties.
Analysis of structural and property relationships.

Main Results:

Successful preparation of a series of new catanionic surfactants exhibiting ionic liquid characteristics.
Demonstration of tunable properties by strategic selection of constituent ions.
Avoidance of environmentally unfavorable halide and imidazolium components.

Conclusions:

The study presents a viable route to novel, tunable surfactant ionic liquids.
These materials offer a greener alternative to conventional ionic liquids.
The synthesized SILs possess tunable properties suitable for diverse applications.