Frustrated smectic layer structures in bent-shaped dimer liquid crystals studied by x-ray microbeam diffraction

Journal Article · Wed Nov 15 00:00:00 EST 2006 · Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics

DOI:https://doi.org/10.1103/PHYSREVE.74.051703· OSTI ID:21072344

Takanishi, Yoichi; Toshimitsu, Megumi; Nakata, Michi; Takada, Naoki; Izumi, Tatsuya; Ishikawa, Ken; Takezoe, Hideo; Watanabe, Junji ^[1]; Takahashi, Yumiko ^[2]; Iida, Atsuo ^[3]

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1. Department of Organic and Polymeric Materials, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8552 (Japan)
2. Department of Physics, Nihon University, Surugadai, Kanda, Chiyoda-ku, Tokyo 101-8308 (Japan)
3. Photon Factory, Institute of Materials Structure Science, 1-1 Oho, Tsukuba-shi, Ibaraki 305-0801 (Japan)

The layer structures in bent-shaped liquid crystal dimers mOAM5AMOm (m=6-16) have been investigated by x-ray microbeam diffraction. These liquid crystal molecules have two rodlike mesogens connected with an odd-numbered alkylene spacer and form a bent shape. In these compounds it is found that the structure changes from the single (m=6) to frustrated-layer structures (m=8, 10, and 12) and switchable frustrated-layer structures (m=14 and 16) with increasing terminal chain length. An anticlinic antiferroelectric structure is suggested in the compound with m=16, based on the different electric-field-induced reorientation behavior from those in the other dimers.

• OSTI ID: 21072344
• Journal Information: Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, Vol. 74, Issue 5; Other Information: DOI: 10.1103/PhysRevE.74.051703; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-651X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANTIFERROELECTRIC MATERIALS
DIMERS
ELECTRIC FIELDS
LAYERS
LIQUID CRYSTALS
MOLECULES
ORGANIC COMPOUNDS
X-RAY DIFFRACTION