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Abstract
Linear supra-molecular liquid crystals, 4-(octyloxy) benzoic acid (8OBA) and 4-(octyloxy)-3-fluoro benzoic acid (8OBAF), have been synthesized. The structure of these compounds was investigated by NMR and FTIR. The thermal and phase behavior of these compounds were studied by polarized optical microscopy (POM), differential scanning calorimetry (DSC) and dielectric spectroscopy. The influence of fluorine atom in benzene ring core compounds and on electro-optical and optical properties has been studied as well. The binary mixtures of these compounds are well-established and the phase diagram (temperature-concentration) is plotted in heating as well as in cooling mode. The substituted mesogen exhibits rich phase variance compared to the 80BA. From the experimental observations, smectic-G phase appeared in the complexes.
Published Version
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