Location of the discotic lamellar-nematic tricritical point and isotope effects in the caesium pentadecafluorooctanoate (CsPFO)/water system as established by133Cs N.M.R. spectroscopy
- 1 January 1989
- journal article
- research article
- Published by Taylor & Francis in Liquid Crystals
- Vol. 6 (4), 481-488
- https://doi.org/10.1080/02678298908034192
Abstract
133Cs N.M.R. spectroscopy has been used to locate the discotic lamellar (smectic A)-nematic tricritical point in the CsPFO/H2O and CsPFO/2H2O systems. In both systems this occurs at the same volume fraction of 0·25, but at different temperatures (302·05 and 304·80 K, respectively). The phase diagram for the CsPFO/H2O system has also been studied for the first time and a comparison of the corresponding fixed points shows there to be large isotope effects.Keywords
This publication has 21 references indexed in Scilit:
- Lyotropic mesomorphism of the cesium pentadecafluorooctanoate/water system: high-resolution phase diagramThe Journal of Physical Chemistry, 1987
- Designing new lyotropic amphiphilic mesogens to optimize the stability of nematic phasesLiquid Crystals, 1986
- A lyotropic nematic phase of lamellar micelles (N L) obtained by a non-ionic surfactant in aqueous solutionColloid and Polymer Science, 1986
- Phase behaviour and structure of a non-ionic discoidal amphiphile in waterChemical Physics Letters, 1986
- Electrical conductivity in macroscopically aligned nematic and lamellar mesophases of the caesium perfluoro-octanoate-water systemChemical Physics Letters, 1984
- On the structure and the physical properties of micellar nematicsIl Nuovo Cimento D, 1984
- New lyotropic liquid crystals composed of finite nonspherical micellesChemical Reviews, 1981
- Surfactant-water liquid crystal phasesPhysics Reports, 1980
- Are “nematic” amphiphilic liquid crystalline mesophases thermodynamically stable?Chemical Physics Letters, 1979
- Magnetically oriented lyotropic luquid crystalline phasesJournal of the American Chemical Society, 1967