New Principle of Molecular Design of LC Polymers by Covalent and Ionic Bonding of Side Groups

Ionic Liquid Crystals

“…The ionic liquid crystal poly(ω-pyridylpyridinium dodecyl methacrylate) bromide can form, without detrimental effects for the mesophase behavior, a hydrogen-bonded complex with 4-octylphenol . Barmatov and co-workers investigated liquid−crystalline ionomers containing alkali metal ions, alkali-earth metal ions, transition metal ions, and rare-earth ions to establish the effect of the nature of the metal ion on the mesophase behavior. − Parameters that have an influence on the phase behavior are charge and radius of the metal ions, distance between the charged ionogenic group and the polymer backbone, and the molecular mass of the polymer. The metal ions act as points of electrostatic binding of the polymer chains and are capable of forming larger ionic associates (so-called multiplets).…”

Liquid Crystalline Hydrogels. 2. Effects of Water on the Structural Ordering

“…The order and spacing of the smectic layer increased with the increase in the AA composition. It seems to be unique that an introduction of AA increased the isotropic temperature and the ordering of the SmA phase because other copolymer samples exhibiting the liquid crystals, such as poly(11CBA- co -2-ethylhexyl acrylate), decrease T i with an increase in the content of the amorphous moiety. − …”