Realization of ferroelectric columnar liquid crystal phases

铁电柱状液晶相的实现

• 批准号: 19350090
• 负责人: KISHIKAWA Keiki
• 金额: $ 12.31万
• 依托单位: Chiba University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2007
• 资助国家: 日本
• 起止时间: 2007 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19350090/
• 关键词: 液晶; 強誘電性; 記録素子; 解析・評価; マイクロ・ナノデバイス; 誘電体物性; 化学物理

Realization of ferroelectric columnar liquid crystal phases were attempted by modification of the molecular structures of liquid crystalline urea compounds. The polar structure of the column was clarified by the effect of alkyl chain length of the urea compounds. Lowering of the liquid crystal temperature range and improvement of the response time on applying a triangular wave voltage were observed in the liquid crystal phases. Further, it was found that the oxygen atoms in the arms of the urea molecules are necessary for the polar switching.

通过改变脲类液晶化合物的分子结构，尝试实现铁电柱状液晶相。通过脲类化合物的烷基链长度的影响，阐明了柱的极性结构。在液晶相中观察到液晶温度范围的降低和施加三角波电压时的响应时间的改善。此外，发现脲分子臂中的氧原子对于极性转换是必需的。

项目成果

Hydrogen-Bonded Dimers of 3,5-Bis-(hydroxylmethyl) benzoic Acids : Novel Supramolecular Tectons

3,5-双-(羟甲基)苯甲酸的氢键二聚体：新型超分子构造

• 发表时间: 2009
• 期刊: Crystal Growth & Design 9(8)
• 作者: Shigeo Kohmoto;Yu Kuroda;Yasunobu Someya ; Keiki Kishikawa;Hyuma Masu;Kentaro Yamaguchi;Isao Azumaya
• 通讯作者: Isao Azumaya

様々なリンカーの導入による強誘電性柱状液晶の実現

通过引入各种连接体实现铁电柱状液晶

• 发表时间: 2009
• 作者: 岸川圭希;森保慎吾;幸本重男
• 通讯作者: 幸本重男

Superstructures of liquid crystalline ureas and their ferroelectric switching behaviors

液晶脲的超结构及其铁电转换行为

• 发表时间: 2008
• 作者: Keiki Kishikawa;Masanori Natsukawa;Shoichiro Nakahara;Yoshinori Okada;Yoichi Takanishi;Ken Ishikawa;Hideo Takezoe;Shigeo Kohmoto
• 通讯作者: Shigeo Kohmoto

Transformation of β-Nitro Alcoholsto the Corresponding Nitro Imines withLithium Hexamethyldisilazide(LHMDS)via Sequential Retro Nitro-Aldol・Nitro-Mannich Reaction

六甲基二硅氮化锂(LHMDS)通过序贯逆硝基羟醛·硝基曼尼希反应将β-硝基醇转化为相应的硝基亚胺

• 发表时间: 2009
• 期刊: Synth. Commun 39
• 作者: S. Tanaka;K. Kochi;H. Ito;J. Mukawa;K. Kishikawa;M. Yamamoto;S. Kohmoto
• 通讯作者: S. Kohmoto

Volume Effect of Alkyl Chainson Organization of IonicSelf-Assemblies toward Hexagonal Columnar Mesophases

离子自组装体烷基链组织对六方柱状中间相的体积效应

• 发表时间: 2008
• 期刊: Bull. Chem. Soc.Jpn 81
• 作者: T. Noguchi;K. Kishikawa;and S.Kohmoto
• 通讯作者: and S.Kohmoto