The Emergence of a Polar Nematic Phase: A Chemist's Insight into the Ferroelectric Nematic Phase.
The Emergence of a Polar Nematic Phase: A Chemist's Insight into the Ferroelectric Nematic Phase.
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极性向列相的出现：化学家对铁电向列相的见解。
DOI：
10.1002/cplu.202300726
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发表时间：
2024
期刊：
影响因子：
3.4
通讯作者：
Cruickshank E
中科院分区：
文献类型：
--
作者：
Cruickshank E
一种新的极性液晶相--铁电液晶的发现，在液晶领域引起了极大的轰动。到目前为止，已经报道了大约150种材料表现出铁电体的铁电相，一般来说，遵循三种关键的原型结构，这些化合物被称为RM 734，DIO和UUQU-4 N。 在这篇综述中，将从化学家的角度描述分子结构与铁电铁电体的稳定性之间的关系。这将着眼于突出各种各样的功能，已被纳入这些原型结构，以及这些变化如何影响目前的中间相的转变温度。NF相似乎是稳定的，特别是通过减少存在的末端烷基链的长度和沿沿着分子主链的长度横向添加氟。这篇综述将介绍铁电介电相的背景，然后显示一系列材料的分子结构，表现出相，描述它们的结构-性能关系，因此给出了一个最新的文献对这个迷人的新中间相。
The discovery of a new polar nematic phase; the ferroelectric nematic, has generated a great deal of excitement in the field of liquid crystals. To date there have been around 150 materials reported exhibiting the ferroelectric nematic phase, in general, following three key archetypal structures with these compounds known as RM734, DIO and UUQU‐4N. In this review, the relationship between the molecular structure and the stability of the ferroelectric nematic, NF, phase will be described from a chemist's perspective. This will look to highlight the wide variety of functionalities which have been incorporated into these archetypal structures and how these changes influence the transition temperatures of the mesophases present. The NFphase appears to be stabilised particularly by reducing the length of terminal alkyl chains present and adding fluorines laterally along the length of the molecular backbone. This review will look to introduce the background of the ferroelectric nematic phase before then showing the molecular structures of a range of materials which exhibit the phase, describing their structure–property relationships and therefore giving an up–to–date account of the literature for this fascinating new mesophase.