2012 Fiscal Year Final Research Report
Precise Structure Control of Stimuli Responsive Liquid Crystals with a Helical Mesogenic Core
| Project/Area Number |
23750170
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Functional materials chemistry
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| Research Institution | The Institute of Physical and Chemical Research |
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Principal Investigator |
KAJITANI Takashi 独立行政法人理化学研究所, エネルギー変換研究チーム, 副チームリーダー (20469927)
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| Project Period (FY) |
2011 – 2012
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| Keywords | 自己組織化 / 液晶 / らせん / 表面・界面 / 刺激応答 / 電荷輸送 |
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| Research Abstract |
We found that an oligo(o-phenylene) (OP), characterized by a cylindrical helical geometry, can act as a novel mesogen. The nematic liquid crystalline (LC) OP as a dopant also shows a high miscibility with discotic molecules. To our surprise, in the doped material, the 2D hexagonal lattice of the LCs fully aligns homeotropically relative to a glass substrate. Furthermore, some discotic LCs forming similar structures to OP generate a hexagonal columnar LC phase at room temperature, where the 2D hexagonal lattice entirely aligns homeotropically relative to various substrates. We noticed that the discotic molecules show an anisotropic transient microwave conductivity.
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[Journal Article] Amphiphilic Design of a Discotic Liquid-Crystalline Molecule for Dipole Manipulation: Hierarchical Columnar Assemblies with a 2D Superlattice Structure2013
Author(s)
Ming-Che Yeh, Yu-Lou Su, Mei-Chun Tzeng, Chi Wi Ong, Takashi Kajitani, Hideo Enozawa, Masaki Takata, Yoshiko Koizumi, Akinori Saeki, Shu Seki, Takanori Fukushima
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Journal Title
Angew. Chem. Int. Ed.
Volume: 52
Pages: 1031-1034
Peer Reviewed
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[Journal Article] Wide-Range 2D Lattice Correlation Unveiled for Columnarly Assembled Triphenylene Hexacarboxylic Esters2012
Author(s)
Terutsune Osawa, Takashi Kajitani, Daisuke Hashizume, Hiroyuki Ohsumi, Sono Sasaki, Masaki Takata, Yoshiko Koizumi, Akinori Saeki, Shu Seki, Takanori Fukushima, Takuzo Aida
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Journal Title
Angew. Chem. Int. Ed.
Volume: 51
Pages: 7990-7993
Peer Reviewed
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