Observation of Layer Fluctuations and Dynamics in Side-Chain polymer Nematic Liquid Crystals

侧链聚合物向列液晶层涨落和动力学的观察

• 批准号: 22340120
• 负责人: TOKITA Masatoshi
• 金额: $ 12.15万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010-04-01 至 2013-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22340120/
• 关键词: 二量体液晶; 動的光散乱; ネマチック液晶; せん断流動; スメクチック揺らぎ; 高分子液晶; 光子相関スペクトル; 動的光散乱法; スメクチック液晶; 層ゆらぎ; せん断流動配向; 側鎖型高分子液晶

The dynamic behaviour of twin dimer nematic liquid crystals were investigated for alpha,omega-bis(4-cyanobiphenyl-4'-yloxy)alkanes (BCBO-m, m = 7-10: the number of spacer methylene units) by dynamic light scattering and the frequencies of the splay, twist and bend modes were determined successfully. The frequencies of BCBO-m are dependent on m: they oscillate depending on the parity of m with exhibiting larger values for even-membered BCBO-m and decrease with increasing m. Such an odd-even oscillation in the splay and bend mode frequencies are governed by that in the elastic constants.

用动态光散射法研究了α，ω-双（4-氰基联苯-4 '-基氧基）烷烃（BCBO-m，m = 7-10：间隔基亚甲基单元的数目）孪晶二聚体液晶的动态行为，成功地测定了展曲、扭曲和弯曲模的频率。BCBO-m的频率依赖于m：它们根据m的宇称振荡，对于偶数元BCBO-m表现出较大的值，并且随着m的增加而降低。这种张开和弯曲模式频率的奇偶振荡由弹性常数决定。

项目成果

Unusual chain configuration of main-chain liquid crystal polyesters having Y-shaped mesogens in nematic phase

• DOI: 10.1016/j.polymer.2011.10.047
• 发表时间: 2011-11
• 期刊: Polymer
• 影响因子: 4.6
• 作者: M. Tokita;Kazuya Kato;R. Ishige;Shuhei Okuda;S. Kawauchi;K. Okoshi;Sungmin Kang;J. Watanabe

Formation of regularly spaced wetting ridges at 1μm intervals on the surface of a liquid-crystalline polymer

在液晶聚合物表面以 1μm 间隔形成规则间隔的润湿脊

• DOI: 10.1021/la303335x
• 发表时间: 2012
• 期刊: Langmuir : The ACS Journal of Surfaces and Colloids
• 作者: Okuda S.;Yoshihara S.;Kang S.;Tokita M.;& Watanabe J.
• 通讯作者: & Watanabe J.

主鎖型液晶性高分子BB-5(1-Me)で観測される特異な二つの液晶化モード

在主链液晶聚合物BB-5(1-Me)中观察到两种独特的液晶模式

• 发表时间: 2010
• 作者: 石毛亮平,姜聲敏,戸木田雅利,ほか3名

Novel Behavior in Shear Flow Orientation of Side-Chain Polymethacrylate Nematic Liquid Crystals

侧链聚甲基丙烯酸酯向列液晶剪切流取向的新行为

• DOI: 10.1021/ma3006763
• 发表时间: 2012
• 期刊: Macromolecules
• 影响因子: 5.5
• 作者: Tokita M.;Ikoma A.;Ishii T.;Kang S.;Watanabe J.;& Matsuoka T.
• 通讯作者: & Matsuoka T.

Well-Ordered Lamellar Microphase- Separated Morphology of an ABA Triblock Copolymer Containing a Main-Chain Liquid Crystalline Polyester as the Middle . Macromolecules

含有主链液晶聚酯作为中间的 ABA 三嵌段共聚物的有序层状微相分离形态。

• DOI: 10.1021/ma200409f
• 发表时间: 2011
• 期刊: Macromolecules
• 影响因子: 5.5
• 作者: Ishige R.;Ishii T.;Tokita M.;Koga M.;Kang S.;& Watanabe J.
• 通讯作者: & Watanabe J.