Thermal and ferroelectric properties of two series of coloured chiral liquid crystalline side group copolymers | Zendy

Niesel Frank Thomas | Zendy; Rübner Joachim | Zendy; Springer Jürgen | Zendy

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Thermal and ferroelectric properties of two series of coloured chiral liquid crystalline side group copolymers

Author(s) -

Niesel Frank Thomas,

Rübner Joachim,

Springer Jürgen

Publication year - 1995

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/macp.1995.021961218

Subject(s) - mesogen , copolymer , pendant group , azobenzene , side chain , ferroelectricity , monolayer , bilayer , polymer , materials science , polymer chemistry , liquid crystal , phase (matter) , crystallography , chemistry , liquid crystalline , organic chemistry , nanotechnology , membrane , dielectric , biochemistry , optoelectronics

Two series of liquid crystalline side group copolymethacrylates were synthesized and their thermal and ferroelectric properties determined. All copolymers contain the same azobenzene mesogen spaced from the backbone by a heptamethylene sequence but different chiral co‐compounds were used. The samples show either a monolayer or a bilayer smectic C* phase but only four polymers with a low content of the azo‐dye could be switched ferroelectrically. The formation of the smectic C* phase of some samples was found to be hindered. In order to study this phenomenon as a function of the molecular weight one copolymer was fractionated.

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