Premium
Molecular dynamics in low‐molar and polymeric ferroelectric liquid crystals
Author(s) -
Kremer Friedrich,
Vallerien Sven Uwe,
Zentel Rudolf,
Kapitza Heinrich
Publication year - 1991
Publication title -
makromolekulare chemie. macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 0258-0322
DOI - 10.1002/masy.19910440114
Subject(s) - ferroelectricity , molecular dynamics , materials science , liquid crystal , relaxation (psychology) , goldstone , dielectric , chemical physics , low frequency , soft modes , molecular rotation , dynamics (music) , nuclear magnetic resonance , molecule , chemistry , computational chemistry , optoelectronics , organic chemistry , physics , psychology , social psychology , geodesy , astronomy , acoustics , geography
Broadband dielectric spectroscopy covering the frequency range from 10 −1 Hz to 10 9 Hz was employed to study the molecular dynamics in low‐molar and polymeric ferrroelectric liquid crystals. At frequencies below 10 6 Hz the ferroelectric modes, soft and Goldstone mode are observed. In the frequency regime from 10 6 Hz to 10 9 Hz a fast relaxation process is found, which is assigned to the hindered rotation of the mesogens around their long molecular axis. It turns out that the molecular dynamics is not principally different between low‐molar and polymeric systems.