Layer modulated smectic-C phase in liquid crystals with a terminal hydroxyl group.
We investigated local layer structures of the three smectic-C phases (SmC, SmC', and SmC″) in a liquid crystal with the terminal hydroxyl group using high resolution and microbeam x-ray diffraction. It is found that SmC is the conventional SmC1 phase and SmC″ is the bilayer SmC2 phase. The SmC' phase forms an in-plane modulation structure, so that this phase is the smectic-C antiphase. From the Fourier transform infrared spectroscopy, it is suggested that the intermolecular hydrogen bonding is important to induce the SmC' and SmC″ phases.
Department of Physics, Graduate School of Science, Kyoto University, Kyoto, Japan.
Yasuhiro
Y
Kimoto
Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, Aomori, Japan.
Ayumi
A
Nishizawa
Department of Physics, Graduate School of Science, Kyoto University, Kyoto, Japan.
Yoichi
Y
Takanishi
Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, Aomori, Japan.
Atsushi
A
Yoshizawa
Department of Physics, Graduate School of Science, Kyoto University, Kyoto, Japan.
Jun
J
Yamamoto