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

Full Abstract

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.

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Author information

Author/s: Takanishi, Yoichi (Y); Toshimitsu, Megumi (M); Nakata, Michi (M); Takada, Naoki (N); Izumi, Tatsuya (T); Ishikawa, Ken (K); Takezoe, Hideo (H); Watanabe, Junji (J); Takahashi, Yumiko (Y); Iida, Atsuo (A);

Affiliation: Department of Organic and Polymeric Materials, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8552, Japan.

Journal and publication information

Publication Type: Journal Article

Journal: Physical review. E, Statistical, nonlinear, and soft matter physics (Phys Rev E Stat Nonlin Soft Matter Phys), published in United States. (Language: eng)

Reference: 2006-Nov; vol 74 (issue 5 Pt 1) : pp 051703

Dates: Created 2007/02/06; Completed 2007/03/20;

PMID: 17279922, status: PubMed-not-MEDLINE (last retrieval date: 11/6/2008)

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