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Cinnamic acid and biphenyl core calamitic asymmetric molecules: preparation and characterization for mesomorphic properties
Ist Teil von
Phase transitions, 2024-03, Vol.97 (3), p.201-211
Ort / Verlag
Abingdon: Taylor & Francis
Erscheinungsjahr
2024
Quelle
Taylor & Francis
Beschreibungen/Notizen
Some cinnamic acid and biphenyl core-derived calamitic molecules were synthesized and characterized for mesomorphic properties. Newly synthesized compounds showed well-defined schlieren textures and mosaic textures for the nematic phase and a relatively well-organized smectic A phase with focal conic textures. The chemical structures were confirmed by FT-IR,
1
H-NMR,
13
C-NMR and elemental analysis. The thermotropic behavior, optical textures and thermal stability have been investigated by differential scanning calorimetry (DSC), polarized optical microscopy (POM), X-ray diffraction (SAXS) and thermal gravimetric analysis (TGA) respectively.