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Updated: Jul 4, 2026

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
Published on: March 24, 2018
Supercritical fluid swelling of liquid crystal films
John M O'Callaghan1, Mark P Copley, John P Hanrahan
1Department of Chemistry, Material Section and Supercritical Fluid Centre, University College Cork, Cork, Ireland.
Abstract:
The influence of liquid and supercritical carbon dioxide and liquid propane on the structural properties of both ionic and nonionic surfactant-based liquid crystal films is discussed in this paper. Swelling of the films, measured using in situ small-angle neutron scattering (SANS), was found to be dependent on the solubility of the propane/carbon dioxide in the micelles of the respective liquid crystals. Additionally, under certain pressure conditions the structural properties of some of the films were observed to change, ultimately leading to a loss of order in the micellar arrays of the liquid crystals.
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