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Phase behaviour and structure of a non-ionic discoidal amphiphile in water

✍ Scribed by N. Boden; R.J. Bushby; C. Hardy; F. Sixl

Publisher: Elsevier Science
Year: 1986
Tongue: English
Weight: 588 KB
Volume: 123
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(86)80021-5

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✦ Synopsis

The phase behaviour and structure of mixtures of a novel non-ionic discoldal amphiphile. 2,3.6,7,10,11-hexa-(1.4,7-trioxaoctyl)-triphenylene, and water have been investigated usmg deuterium NMR spectroscopy and X-ray diffraction.

The feature of special interest is the occurrence of a nematic phase, intermediate to an isotropic micellar solution at higher temperatures and a columnar hexagonal phase at lower temperatures.

This nematic phase exists over wide concentration (0.1 to 0.5 volume fraction of amphiphile) and temperature intervals. The molecules are stacked in columnar (rod-shaped) aggregates.

In the isotropic micellar solution and nematlc phase the length of the micelle is of the order of the centre-to-centre separation.

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