Abstract
Azobenzene liquid crystals, possessing two chiral moieties at both of the peripheral ends of the molecular structure, show characteristic chirality-originated liquid-crystalline and physical properties: emergence of stable smectic Q phases, a photoinduced phase transition between 3D liquid crystal phases, and induction of birefringence in the “liquid” phase. A dichiral compound, of which rigidity of the core is reduced by the introduction of ester groups, showed no smectic Q phases, but exhibited the antiferroelectric smectic C phase. The “liquid” phase of the less-rigid azo-compound was found to show electrically induced birefringence.
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