title: Ferrielectric smectic C phases stabilized using a chiral liquid crystal oligomer.
abstract: A chiral liquid crystal oligomer, (R)-1-methylheptyl 4'-{8-[4-(5-octylpyrimidin-2-yl)phenyloxy]octanoyloxy}biphenyl-4-carboxylate, was prepared. Its physical properties were investigated using optical microscopy, differential scanning calorimetry, and X-ray diffraction. The oligomer was found to exhibit two ferrielectric smectic C phases with a wide temperature range between ferroelectric and antiferroelectric smectic C phases. Furthermore, ferrielectric-like ordering was observed in a racemic mixture of the enantiomers. The oligomeric effect can produce highly chirality-dependent ordering in the racemic system.
authors.affiliation: Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, 3, Bunkyo-cho, Hirosaki 036-8561, Japan.
authors.forename: Anna
authors.initials: A
authors.lastname: Noji
authors.forename: Naoki
authors.initials: N
authors.lastname: Uehara
authors.forename: Yoichi
authors.initials: Y
authors.lastname: Takanishi
authors.forename: Jun
authors.initials: J
authors.lastname: Yamamoto
authors.forename: Atsushi
authors.initials: A
authors.lastname: Yoshizawa