Study on Helical Structure of the B<sub>4</sub> Phase Formed from Achiral Banana-Shaped Molecule
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- Thisayukta Jirakorn
- Department of Organic and Polymeric Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8552, Japan
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- Takezoe Hideo
- Department of Organic and Polymeric Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8552, Japan
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- Watanabe Junji
- Department of Organic and Polymeric Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8552, Japan CREST-JST (Japan Science and Technology Corporation), 4-1-8 Hon-cho, Kawaguchi, Saitama 332-0012, Japan
書誌事項
- タイトル別名
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- Study on Helical Structure of the B4 Phase Formed from Achiral Banana-Shaped Molecule.
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説明
The helical structure of the B4 phase in the banana-shaped molecules, the 1,3-benzene bis[4-(4-n-alkoxyphenyliminomethyl) benzoate] (P-n-O-PIMB) series, has been studied by means of optical microscopy, X-ray diffraction and circular dichroism for homogeneously and homeotropically aligned cells. The homogeneously aligned cells showed a transparent blue color and a circular dichroism at about 400 nm, indicating the existence of a helical structure. Detailed texture observation also reveals the existence of two helical domains with opposite helical senses. The two helical domains are formed with equal probability, and with the helical axes parallel to the layers similar to the twist grain boundary (TGB) phase. This helical structure is also supported by X-ray diffraction. The balance between the two domain areas is broken by doping P-n-O-PIMB with its chiral analogue. The texture of the homeotropically aligned cells suggests two different helical axes, both of which are parallel to the layer but with one parallel and the other perpendicular to the bent-core plane.
収録刊行物
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- Japanese Journal of Applied Physics
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Japanese Journal of Applied Physics 40 (5A), 3277-3287, 2001
The Japan Society of Applied Physics
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詳細情報 詳細情報について
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- CRID
- 1390001206254400256
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- NII論文ID
- 10006202804
- 210000049485
- 30021822048
- 130004528366
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- NII書誌ID
- AA10457675
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- COI
- 1:CAS:528:DC%2BD3MXkt1CgsLc%3D
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- ISSN
- 13474065
- 00214922
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- NDL書誌ID
- 5804549
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- 本文言語コード
- en
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