Observation of a re-entrant isotropic phase in a pure disc-like liquid crystal
- 1 January 1988
- journal article
- research article
- Published by Taylor & Francis in Liquid Crystals
- Vol. 3 (1) , 149-152
- https://doi.org/10.1080/02678298808086360
Abstract
We report the observation of an optically isotropic phase in the new disc-like mesogen 2,3,7,8,12,13-hexa(octadecanoyloxy)truxene. On cooling, this optically isotropic phase goes over into a nematic phase, while on heating a columnar phase grows in. To our knowledge this is the first example of a pure discotic mesogen exhibiting an isotropic phase below the temperature existence of a columnar phase. Our findings are supported by refractive index measurements of this compound as a function of temperature.Keywords
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