Abstract
The dimesogenic compound consisting of cholesterol and cyanobiphenyl mesogens interlinked by ω-oxyalkanoyl spacer was synthesized. The mesomorphic properties were investigated by differential scanning calorimetry (DSC), polarizing optical microscopy (POM), and X-ray diffraction (XRD). The experimental results indicated that this compound exhibited mesophase over a much wider temperature range and a new mesophase blue phase (BP). Focal conic domains (FCDs) and droplets texture to the smectic A phase ( S A), oily streaks typical to the chiral nematic ( N*) phase were found in the liquid crystalline state, respectively. Besides, it exhibited a smectic layer spacing about 1.0 time to the length of the molecule, which indicated a monolayer type of S A ordering.
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