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

为了开发具有柱状液晶构型的新型铁电液晶，利用艾达集团开发的在液晶介质中超分子聚合实现的圆盘-棒状杂化柱状组装技术，开始合成合适的单体。单体的合成包括掺入弯曲核心分子基序作为单体核心部分的侧链。在核心部分，采用了氢键基元。今年，我设计和合成了几个不同的侧链和核心单元来实现铁电性能。对于核心单元，新设计和合成了具有适当碗翻转势垒的碗状分子。在这种情况下，铁电特性由核心单元给出。因此，侧链单元可以更简单。将侧链单元与核心单元耦合后，有望得到柱状液晶，实现铁电柱状液晶。

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.