Enantioselective segregation in achiral nematic liquid crystals
作者:Verena Görtz、John W. Goodby
DOI:10.1039/b503846d
日期:——
The elusive biaxial nematic liquid crystal phase was recently discovered in a family of substituted oxadiazoles. Our investigations of these materials show that the achiral biaxial nematic phase can segregate into chiral domains of opposite handedness, thereby demonstrating that the liquid-like nematic phase exhibits the properties of a conglomerate.
Synthesis, thermal, dielectric and electro-optic properties of new series of fluorinated hydrogen-bonded liquid crystals
作者:Mouna Derbali、Taoufik Soltani、Ahlem Guesmi、Naoufel Ben Hamadi、Erwann Jeanneau、Yves Chevalier
DOI:10.1016/j.molliq.2022.120510
日期:2022.12
liquid–Nematic–SmA–SmC–crystalline solid upon cooling from the isotropic phase. All the transition temperatures decrease with increasing alkoxy chain length of nOBAFF, which reveals a decrease of order parameter for longer chains. The dielectric and electro-optic behaviors of the nematic phase of nOBAFF/8OBA mixtures reveal a decrease of the threshold voltage and response time upon increasing the alkyl chain length