Development of of electro-functional materials and devices based on supramolecular polymers

基于超分子聚合物的电功能材料与器件的开发

• 批准号: 20F20035
• 负责人: 相田 卓三
• 金额: $ 1.47万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2020
• 资助国家: 日本
• 起止时间: 2020-04-24 至 2022-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-20F20035/
• 关键词: Ferroelectric; Columnar liquid crystal; Electric field response; Ferroelectricity

In order to develop a new type of ferroelectric liquid crystals (FLCs) having columnar LC geometries, by using the technology of disk-rod hybrid columnar assembly realized by supramolecular polymerization in LC media, which is developed in Aida group, I started to synthesize an appropriate monomer. The synthesis of the monomer involves the incorporation of a bent-core molecular motif as a side chain of the core part of the monomer. In the core part, a hydrogen-bonding motif was employed.This year, I have designed and synthesized a couple of different side-chains and core units for realizing the ferroelectric property. For the core units, bowl-shaped molecules having an appropriate bowl-inversion barrier were newly designed and synthesized. In this case, the ferroelectric property is given by the core unit. Therefore, the side chain units could be more simple. After coupling the sidechain and the core units, columnar LC is expected to be obtained and the ferroelectric columnar LC would be realized.

为了开发一种新型的具有柱状液晶几何结构的铁电液晶（FLC），利用爱达集团开发的在液晶介质中通过超分子聚合实现的盘棒混合柱状组装技术，开始合成合适的单体。 单体的合成涉及掺入作为单体的核心部分的侧链的非核心分子基序。 在核心部分，采用了氢键基序。今年，我设计并合成了几个不同的侧链和核心单元，以实现铁电性能。 对于核心单元，新设计并合成了具有适当的碗反转屏障的碗状分子。 在这种情况下，铁电性能由核心单元给出。 因此，侧链单元可以更简单。 将侧链与芯单元耦合后，有望得到柱状液晶，实现铁电柱状液晶。