Abstract
AbstractBroadband dielectric spectroscopy (frequency range 10−1–106 Hz) was used to analyze the frequency and temperature dependence of the molecular dynamics of a series of ferroelectric liquid crystals (FLCs) and polymers which exhibit a chiral smectic C (S) phase in a wide temperature range (about 190°C) including room temperature. Two ferroelectric modes, Goldstone and Soft mode, were observed in the low‐molar‐mass FLCs. Both of these modes were found in the S phase; however, only the soft mode was present in the smectic A (SA) phase. On the other hand, two collective relaxation processes (Soft and Goldstone mode) and four molecular relaxations (δ, α, β and γ‐relaxation) of the side chain liquid crystalline polymer were demonstrated.
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