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

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

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

机译：终端链长对胆甾型液晶掺杂掺杂螺旋弯曲芯分子螺旋扭力的影响

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We prepared a homologous series of achiral bent-core (BC) liquid crystals with different terminal alkoxy chain lengths, n (BC-n), and evaluated the helical twisting power (HTP) of the BC-n doped in a cholesteric liquid crystal. The BC-n 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 (chi) for BC molecules with n = 8-16. The distribution of chi for each simulated conformation varied with n, and the variation tendency was different for molecules with n < 12 and n > 12 despite the linear relationship between HTP and n in the experiment.

机译：我们制备了具有不同末端烷氧基链长，N（BC-N）的同源弯曲芯（BC）液晶系列，并评价掺杂在胆甾型液晶中的BC-N的螺旋扭转功率（HTP）。具有较长末端链的BC-N分子显示出较大的HTP。为了解释这种引人注目的现象，进行了随机动力学模拟以确定具有n = 8-16的BC分子的手性令参数（CHI）的分布。对于每个模拟构象的CHI的分布在n的情况下变化，并且在实验中HTP和N之间的线性关系，具有n <12和N> 12的分子不同的变化趋势。

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来源
《RSC Advances》 |2018年第3期|共4页
作者
Kim Byeong-Cheon; Walker Martin; Jo Seong-Yong; Wilson Mark R.; Takezoe Hideo; Choi Suk-Won;
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作者单位

Kyung Hee Univ Dept Adv Mat Engn Informat &

Elect BK21Plus Yongin 17104 Gyeonggi Do South Korea;

Univ Durham Dept Chem South Rd Durham DH1 3LE England;

Kyung Hee Univ Dept Adv Mat Engn Informat &

Elect BK21Plus Yongin 17104 Gyeonggi Do South Korea;

Univ Durham Dept Chem South Rd Durham DH1 3LE England;

Toyota Phys &

Chem Res Inst 41-1 Yokomichi Nagakute Aichi 4801192 Japan;

Kyung Hee Univ Dept Adv Mat Engn Informat &

Elect BK21Plus Yongin 17104 Gyeonggi Do South Korea;

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正文语种 eng
中图分类化学;
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1. Effect of terminal chain length on the helical twisting power in achiral bent-core molecules doped in a cholesteric liquid crystal [J] . Kim Byeong-Cheon, Walker Martin, Jo Seong-Yong, RSC Advances . 2018,第3期

机译：终端链长对胆甾型液晶掺杂掺杂螺旋弯曲芯分子螺旋扭力的影响
2. The study of the helical pitch of cholesteric liquid crystals by introducing achiral rod-like molecules [J] . Chun-Yu Lin, Jiunn-Yih Lee Journal of the Chinese Institute of Engineers . 2014,第3期

机译：通过引入非手性棒状分子研究胆甾型液晶的螺距
3. Tuning helical twisting power and photoisomerisation kinetics of axially chiral cyclic azobenzene dopants in cholesteric liquid crystals [J] . Liquid Crystals: An International Journal in the Field of Anisotropic Fluids . 2019,第15期

机译：胆甾型液晶轴向手性环偶氮苯掺杂剂的调整螺旋扭转力和光学激发动力学
4. New twist on the helical nanofilament phase of bent-core liquid crystals [C] . C. Zhang, O.D. Lavrentovich, A. Jakli Conference on liquid crystals . 2014

机译：弯曲核液晶的螺旋纳米丝相的新扭曲
5. Design and synthesis of ferroelectric liquid crystals: 1) Studies on the de Vries Phase, and 2) Bent-core Achiral Ferroelectrics [D] . Gong, Tao 2011

机译：铁电液晶的设计与合成：1）de Vries相研究，2）弯芯非手性铁电体
6. Unconventional High-Performance Laser Protection System Based on Dichroic Dye-Doped Cholesteric Liquid Crystals [O] . Wanshu Zhang, Lanying Zhang, Xiao Liang, -1

机译：基于二向色染料掺杂胆甾型液晶的非常规高性能激光保护系统
7. Effect of terminal chain length on the helical twisting power in achiral bent-core molecules doped in a cholesteric liquid crystal. [O] . Kim Byeong-Cheon, Walker Martin, Jo Seong-Yong, 2018

机译：末端链长对胆甾型液晶中掺杂的非手性弯曲核分子螺旋扭曲能力的影响。

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

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