Liangde, LU and Nagana Gowda, GA and Suryaprakash, N and Khetrapal, CL and Weiss, Richard G (1998) Solute induced liquid crystalline behaviour of a quaternary ammonium salt and its application to structure determination. In: Liquid Crystals, 25 (03). pp. 295-300.
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A new liquid crystalline phase, induced by the addition of small amounts of a non-mesogenic solute (such as dimethyl sulphoxide or methyl iodide) to a quaternary ammonium salt, N-methyl-N,N,N-trioctadecylammonium iodide (MTAI), has been detected by NMR and optical microscopic studies. In some cases, there is a coexistence of nematic and smectic phases. Information on the ordering of the phases in the magnetic field of the spectrometer has been derived from NMR spectra of a dissolved molecule, C-13-enriched methyl iodide. The low order parameter of the pure thermotropic nematic phase of the salt provides first-order spectra of the dissolved oriented molecules. Analyses of spectra of cis,cis-mucononitrile exemplifies the utility of the MTAI nematic phase in the determination of structural parameters of the solute.
|Item Type:||Journal Article|
|Additional Information:||Copyright of this article belongs to Taylor and Francis Group.|
|Department/Centre:||Division of Chemical Sciences > Sophisticated Instruments Facility|
|Date Deposited:||11 Dec 2009 07:19|
|Last Modified:||19 Sep 2010 05:27|
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