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末端链长度对掺杂在胆甾型液晶中的非手性弯曲核分子螺旋扭曲力的影响。

Effect of terminal chain length on the helical twisting power in achiral bent-core molecules doped in a cholesteric liquid crystal.

作者信息

Kim Byeong-Cheon, Walker Martin, Jo Seong-Yong, Wilson Mark R, Takezoe Hideo, Choi Suk-Won

机构信息

Department of Advanced Materials Engineering for Information and Electronics (BK21Plus), Kyung Hee University Yongin-shi Gyeonggi-do 17104 Korea

Department of Chemistry, Durham University Lower Mountjoy, South Road DH13LE UK.

出版信息

RSC Adv. 2018 Jan 3;8(3):1292-1295. doi: 10.1039/c7ra11589j. eCollection 2018 Jan 2.

DOI:10.1039/c7ra11589j
PMID:35540888
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9076949/
Abstract

We prepared a homologous series of achiral bent-core (BC) liquid crystals with different terminal alkoxy chain lengths, (BC-), and evaluated the helical twisting power (HTP) of the BC- doped in a cholesteric liquid crystal. The BC- molecules with longer terminal chains showed larger HTPs. To interpret this striking phenomenon, a stochastic dynamics simulation was performed to determine the distribution of the chirality order parameters () for BC molecules with = 8-16. The distribution of for each simulated conformation varied with , and the variation tendency was different for molecules with < 12 and > 12 despite the linear relationship between HTP and in the experiment.

摘要

我们制备了一系列具有不同末端烷氧基链长的非手性弯曲核（BC）液晶（BC-），并评估了掺杂在胆甾相液晶中的BC-的螺旋扭曲力（HTP）。具有较长末端链的BC-分子表现出更大的HTP。为了解释这一显著现象，进行了随机动力学模拟，以确定n = 8-16的BC分子的手性序参数（S）的分布。每个模拟构象的S分布随n而变化，尽管在实验中HTP与n呈线性关系，但n < 12和n > 12的分子的变化趋势不同。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4389/9076949/a6275f214501/c7ra11589j-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4389/9076949/c1f6cb825114/c7ra11589j-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4389/9076949/c6a3d1f91c8b/c7ra11589j-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4389/9076949/6dcb5724bb10/c7ra11589j-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4389/9076949/e31b496d03de/c7ra11589j-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4389/9076949/a6275f214501/c7ra11589j-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4389/9076949/c1f6cb825114/c7ra11589j-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4389/9076949/c6a3d1f91c8b/c7ra11589j-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4389/9076949/6dcb5724bb10/c7ra11589j-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4389/9076949/e31b496d03de/c7ra11589j-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4389/9076949/a6275f214501/c7ra11589j-f5.jpg

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本文引用的文献

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