Synthesis and physical properties of novel polar twin liquid crystals

Abstract

Novel dimesogenic and trimesogenic compounds were prepared and their physical properties were investigated. The compounds exhibited N and SmA phases. Dielectric anisotropy induced by the dimesogenic compound in the N mixture was found to depend on the parity of the central spacer. We discuss structural effects of the novel liquid crystalline oligomers on the phase transition behavior and electro-optical properties.