Side chain type ionic liquid crystalline polymers having high Preliminary communication molecular weight

Liquid Crystallinity and Other Properties in Complexes of Cationic Azo-Containing Surfactomesogens with Poly(styrenesulfonate)

“…Only the aniline-type 10Q complexes with a lateral Et substituent appear to be intrinsically amorphous, which can be attributed to steric hindrance to efficient molecular packing caused by the Et branch. The spacer length of the 6Q complexes may be at the limit of that required to satisfy at once the packing tendencies of the mesogenic cores, the association of the interacting ionic groups, and the conformational tendencies of the polymer backbone, as seemed to be the case also in some other ion-containing SCLCPs. ,, When LC order is present, it is of the SmA type (but with distinctive characteristics depending on the mesogen type), which is the most frequently observed mesophase in ionic complexes and in ion-containing SCLCPs in general. ,,− ,,,, …”

Ionic Liquid Crystals

“…Bazuin and co-workers investigated tail-end amphiphiles of the type poly(ω-pyridinium alkyl methacrylates) with various 4-substituted pyridinium bromide groups and spacer lengths ( 194 ). , Also the corresponding polymers with alkylsulfonate counterions have been considered . Haramoto and co-workers described high-molecular weight ionic liquid−crystalline polymers with a 4-(1,3-dioxan-2-yl)pyridinium group in the side-chain ( 195 ) . An ionic side-chain polymer liquid crystal with sodium counterions could be prepared by partial alkaline hydrolysis of liquid−crystalline polyacrylates bearing either a phenyl benzoate or a cyanobiphenyl group in the side-chain. , In the case of the polyacrylate bearing a 4-cyanophenyl benzoate group, the partial hydrolysis by sodium hydroxide gave the sodium salt of benzoic acid ( 196 ), whereas in the case of the polyacrylate with the cyanobiphenyl group the hydrolysis reaction resulted in the sodium salt of acrylic acid ( 197 ).…”

Fast thermally-responsive azatriphenylene ionic discotic liquid crystalline polymers with shape-memory properties

“…[7][8][9][10][11][12][13][14] Most of the investigated ILCPs are based on rodshaped mesogens and primarily form smectic and nematic phases. [15][16][17][18][19] For example, Ujiie et al 20 investigated the synthesis of ILC copolymers via quaternary amination reactions involving nonionic counterparts and hydrobromic acid. The resulting ILC copolymers exhibited a smectic A phase, whereas the nonionic portion exclusively formed a nematic phase with a schlieren texture.…”