Abstract
Crystallization and polymorphism of the crystal phases of two chiral liquid crystalline compounds exhibiting the antiferroelectric smectic CA* phase, one fluorosubstituted in the aromatic molecular core, are investigated by differential scanning calorimetry and X-ray diffraction. The fluorosubstituted compound starts crystallizing at smaller undercooling for a low cooling rate (2 °C/min), while for fast cooling (5–20 °C/min) and in isothermal conditions after fast cooling (20 °C/min) the crystallization of the non-fluorosubstituted compound occurs faster. Differences in the crystallization kinetics are discussed based on the thermodynamic properties as well as the molecular dynamics investigated for these compounds in the previous papers.
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