Nguyen Manh Linh, Cho Byoung-Ki
Department of Chemistry, Dankook University, 119, Dandae-ro, Chungnam, 448-701, Korea.
Chemistry. 2020 Jun 2;26(31):6964-6975. doi: 10.1002/chem.201904884. Epub 2020 Jan 31.
Recently, ferroelectrically switchable columnar LCs have drawn a great deal of attention for their generation of rich polarization domains. Because of their unique dielectric and self-assembly properties, they are considered to be a promising material for the design of sensors and ultra-high memory devices. Herein, ferroelectrically switchable LCs by using ester, amide, and 1,2,3-triazole groups are reviewed. Most of them do not exhibit genuine ferroelectricity owing to the low energy barrier between the two polar states. The intermolecular interactions between polar groups strongly affect the switchability and stability of polarization. Therefore, it is challenging to balance these two competing factors to improve the ferroelectric function in columnar LCs. Overall, additional effort, including LC design and device fabrication, should be made to optimize the material performance for practical applications in the future.
最近，铁电可切换柱状液晶因其能产生丰富的极化畴而备受关注。由于其独特的介电和自组装特性，它们被认为是用于设计传感器和超高存储器件的一种很有前景的材料。在此，对使用酯基、酰胺基和1,2,3 - 三唑基团的铁电可切换液晶进行综述。由于两个极性态之间的能垒较低，它们中的大多数并不表现出真正的铁电性。极性基团之间的分子间相互作用强烈影响极化的可切换性和稳定性。因此，平衡这两个相互竞争的因素以改善柱状液晶中的铁电功能具有挑战性。总体而言，未来应付出更多努力，包括液晶设计和器件制造，以优化材料性能用于实际应用。
