Nowadays, intensive research has focused on the design and synthesis of function-integrated smart materials resulting from the spontaneous self-assembly of appropriately chosen functional molecules. 朝着这个方向努力,我们合成了一系列新的非常规手性柱状液晶 (Col LC),其中环三磷腈核心被基于胆固醇的席夫碱二聚单元包围。胆固醇,通过以下方式共价结合到双环席夫碱核上一个不同长度和奇偶校验的柔性垫片,已被有预谋地结合起来,以在 Col 流体宏观结构中诱导手性。这些研究使用多种互补技术,清楚地揭示了间隔物的长度而不是奇偶性对由合成化合物的固有 Col 组装产生的 2D 晶格对称性的影响。通过详细的电子密度映射和小角/广角
Synthesis and Characterization of Cholesterol-Based Tetramers
作者:K. C. Majumdar、S. Ponra、S. Chakravorty
DOI:10.1080/15421406.2010.504628
日期:2010.10.14
Novel symmetrical liquid-crystal tetramers were designed and synthesized. The length of the central spacer and the outer spacers has been varied. The molecular structures of the target compounds were confirmed by Fourier transform infrared and proton nuclear magnetic resonance spectroscopy. The thermal phase behavior of the tetramers was investigated by polarizing optical microscopy and differential scanning calorimetry. All of the liquid-crystal tetramers showed either a chiral nematic mesophase or chiral nematic and smectic mesophases.