分子铁电材料因为有着易于加工、环境友好、成本低、生物相容性高和机械灵活性等诸多特性，已经成为当今科学研究的热点。而手性现象在自然界中广泛存在，是自然界的基本属性之一。单一手性分子铁电体融合了手性材料和分子铁电材料的性能优势，有望成为一类极具发展前景的新型手性多功能材料。本项目拟通过引入单一手性近球型或柔性有机阳离子，实现对单一手性分子铁电体的精准设计合成。系统的表征不同镜像异构体的结构、手性相关性质和铁电相关性质，深入分析微观结构与宏观性质之间的关系。在不同形态下原位观测铁电畴在相变过程中的形成，试图发现从顺电相到铁电相的瞬间畴的出现与单一手性的对应，分析不同手性引起的畴结构区别，期待寻找到手性与铁电性之间的关联，为早日实现手性分子铁电体的应用起到积极的推动作用。

Molecular ferroelectric materials are highly desirable for their easy processing, environmental friendliness, low cost, good biocompatibility and mechanical flexibility. The chiral phenomenon is widespread in nature and is one of the basic attributes of nature. Homochiral molecular ferroelectric, which combines desirable characteristics from chiral materials and molecular ferroelectrics, is a new type of promising chiral multifunctional materials. This project aims to achieve precise synthesis of homochiral molecular ferroelectrics by introducing flexible or quasi-spherical homochiral organic cations. Then, we will systematically characterize the structure, chiral related properties and ferroelectric related properties of the enantiomers, and deeply analyze the relationship between microstructure and macroscopic properties. In their different forms, we will observe the formation of ferroelectric domain structure during the phase transition process, and try to find the correspondence between the appearance of the instantaneous domain from the paraelectric phase to the ferroelectric phase and the single chirality. Subsequently, we will analyze the difference in domain structure caused by different chiralities, looking forward to finding the connection between chirality and ferroelectricity, which would play a significant role in the early realization of the application of chiral molecular ferroelectrics.