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Characterization of the phase behaviour of a novel polymerizable lyotropic ionic liquid crystal

Goujon, Nicolas, Forsyth, Maria, Dumée, Ludovic F., Bryant, Gary and Byrne, Nolene 2015, Characterization of the phase behaviour of a novel polymerizable lyotropic ionic liquid crystal, Physical chemistry chemical physics, vol. 17, pp. 23059-23068, doi: 10.1039/c5cp03797b.

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Title Characterization of the phase behaviour of a novel polymerizable lyotropic ionic liquid crystal
Author(s) Goujon, Nicolas
Forsyth, MariaORCID iD for Forsyth, Maria orcid.org/0000-0002-4273-8105
Dumée, Ludovic F.ORCID iD for Dumée, Ludovic F. orcid.org/0000-0002-0264-4024
Bryant, Gary
Byrne, Nolene
Journal name Physical chemistry chemical physics
Volume number 17
Start page 23059
End page 23068
Total pages 10
Publisher Royal Society of Chemistry
Place of publication Cambridge, Eng.
Publication date 2015-08-14
ISSN 1463-9084
Summary The development of new polymerizable lyotropic liquid crystals (LLCs) utilizing charged amphiphilic molecules such as those based on long chain imidazolium compounds, is a relatively new design direction for producing robust membranes with controllable nano-structures. Here we have developed a novel polymerizable ionic liquid based LLC, 1-hexadecyl-3-methylimidazolium acrylate (C16mimAcr), where the acrylate anion acts as the polymerizable moiety. The phase behaviour of the C16mimAcr upon the addition of water was characterized using small and wide angle X-ray scatterings, differential scanning calorimetry and polarized optical microscopy. We compare the phase behaviour of this new polymerizable LLC to that of the well known LLC chloride analogue, 1-hexadecyl-3-methylimidazolium chloride (C16mimCl). We find that the C16mimAcr system has a more complex phase behaviour compared to the C16mimCl system. Additional lyotropic liquid crystalline mesophases such as hexagonal phase (H1) and discontinuous cubic phase (I1) are observed at 20 °C for the acrylate system at 50 and 65 wt% water respectively. The appearance of the hexagonal phase (H1) and discontinuous cubic phase (I1) for the acrylate system is likely due to the strong hydrating nature of the acrylate anion, which increases the head group area. The formation of these additional mesophases seen for the acrylate system, especially the hexagonal phase (H1), coupled with the polymerization functionality offers great potential in the design of advanced membrane materials with selective and anisotropic transport properties.
Language eng
DOI 10.1039/c5cp03797b
Field of Research 030302 Nanochemistry and Supramolecular Chemistry
Socio Economic Objective 869999 Manufacturing not elsewhere classified
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, Royal Society of Chemistry
Persistent URL http://hdl.handle.net/10536/DRO/DU:30077072

Document type: Journal Article
Collection: Institute for Frontier Materials
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