The reversal of the diamagnetic anisotropy in amphiphilic nematic liquid crystals using the aromatic counterions phenyl sulphonate and benzoate

K. Radley Department of Chemistry, Simon Fraser University, Burnaby, British Columbia, Canada, V5A 1S6; 12 New Street, Skelmanthorpe, Huddersfield, W. Yorkshire, HD8 9BL, England

A. S. Tracey Department of Chemistry, Simon Fraser University, Burnaby, British Columbia, Canada, V5A 1S6

M. M. Tracey Department of Chemistry, Simon Fraser University, Burnaby, British Columbia, Canada, V5A 1S6

Abstract

Proton N.M.R. is used to investigate the inclusion of the phenylsulphonate and the benzoate ion as counterions in samples of amphiphilic nematic liquid crystals. When these aromatic counterions are substituted in sufficient amounts the sign of the diamagnetic anisotropy is reversed. The orientation parameters are also shown to be dependent upon the micelle shape, as well as the sign of the diamagnetic anisotropy.

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The reversal of the diamagnetic anisotropy in amphiphilic nematic liquid crystals using the aromatic counterions phenyl sulphonate and benzoate

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The reversal of the diamagnetic anisotropy in amphiphilic nematic liquid crystals using the aromatic counterions phenyl sulphonate and benzoate

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