A Design of novel Side-chain Liquid Crystalline Polymers Using Optically Active Functional Group

利用光学活性官能团设计新型侧链液晶聚合物

• 批准号: 05453143
• 负责人: KAWAKAMI Yusuke
• 金额: $ 4.29万
• 依托单位: JAIST (Japan Advanced Institute of Science and Technology)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05453143/
• 关键词: Optically active functional group; liquid crystalline polymer; stereoregularity; Conformation; Mesogenic group; Spacer; Siloxane; Cyclic siloxane; 晶性化合物; 分子設計; 光学活性; 分子不斉; 炭化水素系ポリマー; タクチシチー

This research project is aimed to desing and synthesize novel liquid crystalline polymers using optically active functional group. In particular, the concept to design the liquid crystalline polymer is based upon the higer order structure of the polymer main chain, such as stereoregularities of the polymers and conformational properties.Throughout the reserch project in the period of two years, several novel polymers, whose main chains are composed of 1,3-dienes, oxetanes, stirenes and epxides, were carried out. developed. These polymers exhibited interesting liquid crystalline characters.It should be pointed out that in some of the novel polymers main chain and side chain mesogenic groups which is the origin of liquid crystallinity is connected through siloxane bond, showing remarkably high mobility. Concerning the synthesis of siloxane containing side chain liquid crystalline polymers, a novel synthetic strategy to prepare functionalized siloxanes was developed. The method is based on the cleavage of cyclic siloxanes using functionalized organometallic reagent to furnish novel disiloxanes with functional groups. The results of this research project implied considerably significant information to design the liquid crystalline polymers containing optically active fucntional groups. Continuous studies will lead to further development in this field.

本研究项目旨在设计和合成具有光学活性官能团的新型液晶聚合物。特别是，液晶聚合物的设计概念是基于聚合物主链的高阶结构，如聚合物的立体规律性和构象性质。通过两年的研究项目，我们开发了几种主链由1，3-二烯、氧杂环己烷、苯乙烯和环氧化物组成的新型聚合物。发展起来的。需要指出的是，在一些新型聚合物中，主链和侧链的介晶基团通过硅氧烷键连接在一起，表现出非常高的迁移率，这是液晶性质的起源。针对含侧链液晶聚合物的硅氧烷的合成，提出了一种制备官能化硅氧烷的新方法。该方法基于环硅氧烷的裂解，使用官能化的有机金属试剂来提供具有官能团的新型二硅氧烷。本课题的研究结果对含光学活性官能团的液晶聚合物的设计具有重要意义。不断的研究将导致这一领域的进一步发展。

项目成果

Y.Kawakami: "Side-chain Liquid Crystalline Polydiene" Macromolecules. 26. 1177-1179 (1993)

Y.Kawakami：“侧链液晶聚二烯”大分子。

Yusuke Kawakami, Koji Takahashi, Shigeo Nishiguchi, and Kozo Toida: "Synthesis and Thermal Transition of Side-chain Liquid Crystalline Polyoxetanes Having Laterally Attached Mesogenic Group" Polymer International. 31. 35-40 (1993)

Yusuke Kawakami、Koji Takahashi、Shigeo Nishiguchi 和 Kozo Toida：“具有横向连接介晶基团的侧链液晶聚氧杂环丁烷的合成和热转变”聚合物国际。

川上雄資: "枝分れ高分子の分子設計" 海外高分子研究. 39. 194 (1993)

川上裕二：“支化聚合物的分子设计”海外聚合物研究 39. 194 (1993)。

Y.Kawakami: "Mokcular Dsign and Functiomlityof Branched Polymers" Elsevier Sctonce, 29 (1994)

Y.Kawakami：“支化聚合物的分子设计和功能”Elsevier Sctonce，29 (1994)

Y.Kawakami: "Molecular design and Syntesis of novel stik-chitn Iiqutd crystalline polymers" Macranol.Symp.84. 167-181 (1994)

Y.Kawakami：“新型粘稠液体结晶聚合物的分子设计和合成”Macranol.Symp.84。