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Aggregation and electro‐optical effects in a ferroelectric (side‐chain liquid crystalline polymer/low molecular weight liquid crystal) composite system
Author(s) -
Hwang Jenn Chiu,
Shu Ming Chin,
Lin Chung Ping
Publication year - 1999
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/(sici)1521-3935(19991001)200:10<2250::aid-macp2250>3.0.co;2-q
Subject(s) - liquid crystal , ferroelectricity , materials science , polymer , phase (matter) , electric field , texture (cosmology) , opacity , binary system , side chain , polymer chemistry , crystallography , optics , organic chemistry , composite material , chemistry , binary number , dielectric , optoelectronics , physics , image (mathematics) , arithmetic , mathematics , quantum mechanics , artificial intelligence , computer science
Aggregation and electro‐optical effects in the binary mixture containing ferroelectric side chain liquid crystalline polymer (FLCP) and low molecular weight liquid crystal (FLC) have been investigated. The FLCP is miscible with FLC having a spiral texture. The binary mixture exhibits a smectic A, a smectic C, and a chiral smectic C phase. The pitch length in the chiral smectic C phase of the binary mixture increases with increasing weight fraction of FLC. The d ‐spacing of the smectic layer decreases slightly with increasing weight fraction of FLC. A reversible transparent‐opaque (light scattering) change was observed in the chiral smectic C state upon application of positive and negative DC electric fields, respectively. Transparent and opaque states are stable when the applied electric field is removed.