Structure of thiol terminated pentyloxy-cyanobiphenyl (5OSH) molecule.
The variation of and for thiol-terminated alkoxy-cyanobiphenyl materials as a function of temperature for different lengths of alkoxy chains. For comparison we have shown the values of and for 6OCB (open circles). Here, is the nematic to isotropic transition temperature.
Twist viscoelastic coefficient of the homologous series of thiol terminated alkoxy-cyanobiphenyl in the nematic phase as a function of reduced temperature. Solid lines are cue to the eyes.
The twist viscoelastic coefficient of 6OCB (empty squares) and 6OSH (filled triangles) as a function of reduced temperature. Solid lines are cue to the eyes.
The variation of as a function of absolute temperature for 6OSH under the applied electric field. Here, is the dielectric anisotropy and is the twist viscosity.
A comparison of the values of twist viscoelastic coefficient for various thermotropic nematic systems reported in literature.
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