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A bicontinuous mesophase geometry with hexagonal symmetry

Schröder-Turk, G.E., Varslot, T., de Campo, L., Kapfer, S.C. and Mickel, W. (2011) A bicontinuous mesophase geometry with hexagonal symmetry. Langmuir, 27 (17). pp. 10475-10483.

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We report that a specific realization of Schwarz's triply periodic hexagonal minimal surface is isotropic with respect to the Doi-Ohta interface tensor and simultaneously has minimal packing and stretching frustration similar to those of the commonly found cubic bicontinuous mesophases. This hexagonal surface, of symmetry P6(3)/mmc with a lattice ratio of c/a = 0.832, is therefore a likely candidate geometry for self-assembled lipid/surfactant or copolymer mesophases. Furthermore, both the peak position ratios in its powder diffraction pattern and the elastic moduli closely resemble those of the cubic bicontinuous phases. We therefore argue that a genuine possibility of experimental misidentification exists.

Item Type: Journal Article
Publisher: American Chemical Society
Copyright: © 2011 American Chemical Society
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