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新型手性添加剂对向列型液晶基质物理化学性质的作用

Role of New Chiral Additives on Physical-Chemical Properties of the Nematic Liquid Crystal Matrix.

作者信息

Merekalov Alexey S, Karpov Oleg N, Shandryuk Georgiy A, Otmakhova Olga A, Finko Alexander V, Bakirov Artem V, Bezborodov Vladimir S, Talroze Raisa V

机构信息

A.V. Topchiev Institute of Petrochemical Synthesis of the Russian Academy of Sciences, 29 Leninsky P., Moscow 119991, Russia.

Department of Chemistry, Moscow State University, Leninskie Gory 1/3, Moscow 119991, Russia.

出版信息

Materials (Basel). 2023 Sep 2;16(17):6038. doi: 10.3390/ma16176038.

DOI:10.3390/ma16176038
PMID:37687732
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10488559/
Abstract

We have synthesized and studied three new chiral substances as additives to a nematic liquid crystal. The difference in the optical activity and chemical structure of additive molecules results in the appearance of the chiral nematic phase and the change in both the compatibility of the mixture components and temperature range of the liquid crystal phase. The role of additives with fundamentally different structures and optical activities is shown. The increase in the that is observed in mixtures with 4-[(2)-(+)-2-Methylbutoxy]benzoic acid indicate the possibility of the increase in order caused by the formation of molecularly rigid and elongated dimers of the additive, which was confirmed using infrared spectra. The doping of the nematic liquid crystal with (2)-(+)-2-[4-[2-Chloro-4-(4-hexylphenyl)phenyl]phenoxy]propanoic acid causes the lowering of The binol derivative (+)-6-[1-[2-(5-Carboxypentoxy)naphthalen-1-yl]naphthalen-2-yl] oxyhexanoic acid has the highest chirality among the additives used. One can explain the effects observed in terms of the role of size, shape, and compatibility with the nematic matrix as shown by the molecules that are used as additives.

摘要

我们合成并研究了三种新型手性物质作为向列型液晶的添加剂。添加剂分子的旋光性和化学结构的差异导致了手性向列相的出现，以及混合物组分相容性和液晶相温度范围的变化。展示了具有根本不同结构和旋光性的添加剂的作用。在与4-[(2)-(+)-2-甲基丁氧基]苯甲酸的混合物中观察到的[具体参数]增加表明，添加剂形成分子刚性和伸长二聚体导致有序度增加是可能的，这一点通过红外光谱得到了证实。用(2)-(+)-2-[4-[2-氯-4-(4-己基苯基)苯基]苯氧基]丙酸掺杂向列型液晶会导致[具体参数]降低。在所用添加剂中，联萘酚衍生物(+)-6-[1-[2-(5-羧基萘-1-基)萘-2-基]氧基己酸具有最高的手性。正如用作添加剂的分子所示，可以根据尺寸、形状以及与向列型基质的相容性来解释所观察到的效应。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce19/10488559/b99061fcbc67/materials-16-06038-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce19/10488559/7afc9b12a131/materials-16-06038-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce19/10488559/fb30b1c776e9/materials-16-06038-sch001.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce19/10488559/fc49633be998/materials-16-06038-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce19/10488559/13b48b51888b/materials-16-06038-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce19/10488559/974186577356/materials-16-06038-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce19/10488559/c0acd9634dd9/materials-16-06038-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce19/10488559/aa968ab4cc92/materials-16-06038-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce19/10488559/94a5f299207a/materials-16-06038-g010a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce19/10488559/39c42b7eef63/materials-16-06038-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce19/10488559/b99061fcbc67/materials-16-06038-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce19/10488559/7afc9b12a131/materials-16-06038-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce19/10488559/fb30b1c776e9/materials-16-06038-sch001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce19/10488559/9cc7347c46b2/materials-16-06038-sch002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce19/10488559/5c7a3ec6ec90/materials-16-06038-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce19/10488559/70c1fc7aa768/materials-16-06038-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce19/10488559/1927e13e7046/materials-16-06038-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce19/10488559/fc49633be998/materials-16-06038-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce19/10488559/13b48b51888b/materials-16-06038-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce19/10488559/974186577356/materials-16-06038-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce19/10488559/c0acd9634dd9/materials-16-06038-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce19/10488559/aa968ab4cc92/materials-16-06038-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce19/10488559/94a5f299207a/materials-16-06038-g010a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce19/10488559/39c42b7eef63/materials-16-06038-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce19/10488559/b99061fcbc67/materials-16-06038-g012.jpg

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本文引用的文献

1
Increased Nematic-Isotropic Transition Temperature on Doping a Liquid Crystal with Molecularly Rigid Carboxylic Acids.掺杂分子刚性羧酸可提高向列-各向同性转变温度。
J Phys Chem B. 2020 Feb 6;124(5):890-899. doi: 10.1021/acs.jpcb.9b09567. Epub 2020 Jan 24.
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Liquid Crystals as Stationary Phases in Chromatography.作为色谱固定相的液晶
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Chirality transfer across length-scales in nematic liquid crystals: fundamentals and applications.
手性在向列液晶中的跨尺度传递：原理与应用。
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