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Seddon AM, Hallett J, Beddoes C, et al. Experimental confirmation of transformation pathways between inverse double diamond and gyroid cubic phases. Langmuir. 2014;30(20):5705-10doi: 10.1021/la5005837.
Seddon, A. M., Hallett, J., Beddoes, C., Plivelic, T. S., & Squires, A. M. (2014). Experimental confirmation of transformation pathways between inverse double diamond and gyroid cubic phases. Langmuir : the ACS journal of surfaces and colloids, 30(20), 5705-10. https://doi.org/10.1021/la5005837
Seddon, Annela M, et al. "Experimental confirmation of transformation pathways between inverse double diamond and gyroid cubic phases." Langmuir : the ACS journal of surfaces and colloids vol. 30,20 (2014): 5705-10. doi: https://doi.org/10.1021/la5005837
Seddon AM, Hallett J, Beddoes C, Plivelic TS, Squires AM. Experimental confirmation of transformation pathways between inverse double diamond and gyroid cubic phases. Langmuir. 2014 May 27;30(20):5705-10. doi: 10.1021/la5005837. Epub 2014 May 12. PMID: 24810845.
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Langmuir. 2014 May 27;30(20):5705-10. doi: 10.1021/la5005837. Epub 2014 May 12.

Experimental confirmation of transformation pathways between inverse double diamond and gyroid cubic phases.

Langmuir : the ACS journal of surfaces and colloids

Annela M Seddon, James Hallett, Charlotte Beddoes, Tomás S Plivelic, Adam M Squires

Affiliations

  1. H. H. Wills Physics Laboratory, University of Bristol , Tyndall Avenue, Bristol BS8 1TL, United Kingdom.

PMID: 24810845 DOI: 10.1021/la5005837

Abstract

A macroscopically oriented double diamond inverse bicontinuous cubic phase (QII(D)) of the lipid glycerol monooleate is reversibly converted into a gyroid phase (QII(G)). The initial QII(D) phase is prepared in the form of a film coating the inside of a capillary, deposited under flow, which produces a sample uniaxially oriented with a ⟨110⟩ axis parallel to the symmetry axis of the sample. A transformation is induced by replacing the water within the capillary tube with a solution of poly(ethylene glycol), which draws water out of the QII(D) sample by osmotic stress. This converts the QII(D) phase into a QII(G) phase with two coexisting orientations, with the ⟨100⟩ and ⟨111⟩ axes parallel to the symmetry axis, as demonstrated by small-angle X-ray scattering. The process can then be reversed, to recover the initial orientation of QII(D) phase. The epitaxial relation between the two oriented mesophases is consistent with topology-preserving geometric pathways that have previously been hypothesized for the transformation. Furthermore, this has implications for the production of macroscopically oriented QII(G) phases, in particular with applications as nanomaterial templates.

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