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Title: Average orientation of molecules dissolved in nematic liquid crystals of opposite diamagnetic anisotropies
Authors: Khetrapal, C.L.
Kunwar, A.C.
Issue Date: 1981
Publisher: Gordon and Breach Science Publishers.
Citation: Molecular Crystals and Liquid Crystals Letters, 1981, Vol.72, p13-16
Abstract: ZLI-1167 is a ternary mixture of nematic liquid crystals with negative diamagnetic anisotropy. It has, therefore, been used as a solvent where the spinning of the samples around the vertical axis in the conventional electromagnets without destroying the orientation of the dissolved molecules is possible in NMR experiments. This results in sharp lines with widths up to 1 Hz in the spectra.1,2 In an NMR system using a superconducting magnet (where the magnetic field direction is along the axis of spinning of the sample), it is possible to use even the nematic liquid crystals with positive diamagnetic anisotropy such as N-(p'-methoxybenzylidene)-p-n-butylaniline (MBBA) or N-(p'-ethoxybenzylidene)-p-n-butylaniline (EBBA) to obtain the spectra with sample spinning with equally sharp lines.3 The orientational behaviour of the dissolved molecules as a function of relative concentrations of the two solvents is investigated and the results are reported in the present communication.
Description: Restricted Access.
ISSN: 1058-725X
Alternative Location:
Copyright: 1981 OPA (Overseas Publishers Association) N.V.
Appears in Collections:Research Papers (SCM)

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