Abstract
An overview of the status of research into lyotropic liquid crystals that align in magnetic fields is presented. These mesophases are novel ones and do not correspond to the hexagonal or lamellar phases which are well characterised. They may be classified broadly into two types, those that spontaneously align with directors parallel to the magnetic field (Type I) and those which align with directors all in a perpendicular plane (Type II). Low angle X-ray diffraction for one type II mesophase reveal§ only two distances 38A° and a distribution about 90Å but no repeated spacings. Low angle laser light diffractions yield repeated spacings in the region of 9–19 pm separation in lamellar arrays. Suggestions as to the origin of these very large spacings are made. The superstructure of these liquid crystals is probably made up of disc or rod like micelles (depending on the type of mesophase) of finite but large size, which combine to pack in a manner which results in a uniaxial fluid.
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Fujiwara, F., Reeves, L.W., Suzuki, M., Vanin, J.A. (1979). Studies of Lyotropic Liquid Crystals that Align in Magnetic Fields. In: Mittal, K.L. (eds) Solution Chemistry of Surfactants. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-7880-2_3
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DOI: https://doi.org/10.1007/978-1-4615-7880-2_3
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