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首页> 外文期刊>Liquid Crystals: An International Journal in the Field of Anisotropic Fluids >Why chiral tartaric imide derivatives give large helical twisting powers in nematic liquid crystal phases: substituent-effect approach to investigate intermolecular interactions between dopant and liquid crystalline molecules
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Why chiral tartaric imide derivatives give large helical twisting powers in nematic liquid crystal phases: substituent-effect approach to investigate intermolecular interactions between dopant and liquid crystalline molecules

机译：为什么手性巨大的酰亚胺衍生物在向列液晶阶段提供大的螺旋扭转功率：取代效应方法研究掺杂剂和液晶分子之间的分子间相互作用

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摘要

Novel C-2-symmetric chiral dopant derivatives, namely, N-substituted (2R, 3R)-2,3-bis(4-(4-octyloxyphenyl)benzoyloxy)succinimides1a-h, were synthesised, and the effects of the N-substituent and imide-carbonyl groups on the helical twisting powers (HTPs) were investigated in two nematic liquid crystalline compounds, 4-n-pentyl-4'-cyanobiphenyl (5CB) and N-(4-ethoxybenzylidene)-4-n-butylaniline (EBBA). As a result, it was clarified that the bulkiness of the N-substituents has a significant correlation with the HTPs, and the imide-carbonyl group interacts strongly with the cyano group of 5CB to give high HTPs in the nematic phases. However, it is assumed that the imide-carbonyl groups of the dopants do not have strong electrostatic attractive interactions with EBBA molecules in the nematic phase to afford the moderate HTPs.
机译：新的C-2 - 对称手性掺杂剂衍生物，即N-取代（2R，3R）-2,3-双（4-（4-（4-（4-辛氧基苯基）苯甲酰氧基）琥珀酰亚胺酰亚胺1A-H，以及N-的效果 在两个列法液晶化合物，4-戊基-4'-氰基溴苯基（5CB）和N-（4-乙氧基苄基）-4-正丁基苯胺中研究了螺旋扭转功率（HTPS）上的取代基和酰亚胺 - 羰基。 （EBBA）。 结果，澄清了N-取代基的大部分与HTP具有显着的相关性，并且酰亚胺 - 羰基与5CB的氰基相互作用，以在向列中提供高HTP。 然而，假设掺杂剂的酰亚胺 - 羰基与向列中的eBBA分子中没有强烈的静电有吸引力相互作用，得到适度的HTP。

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