Molecular tilt angle and order parameter oflow molar mass ferroelectric liquid crystal using JR spectroscopy
نویسندگان
چکیده
Fourier transform infrared spectroscopy (ETIR) of a ferroelectric liquid-ciystalline material: 4-(3)-(S>methy1-2..(S) chloropentanoyloxy-4'-octyloxy-biphenyl has been investigated in the wavenumber range 450-4000 cm for various temperatures and as a function of direct bias voltage in its SmC* phase. Samples prepared in both homeotropic and homogeneous alignments have been studied. The order parameter was calculated for several isolated JR vibrations which are characteristic of different parts and orientations ofmolecules. The dependence ofthe molecular tilt angle on direct bias voltage and temperature has similar characteristics to those Obtained from electro-optic measurements.
منابع مشابه
Self-assembly of biaxial ordering and molecular tilt angle of chiral smectic liquid crystals in homeotropically aligned cells investigated using infrared spectroscopy.
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