含联苯酯三臂星形玻璃液晶的合成与表征

A. Salisu
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引用次数: 1

摘要

合成了一种含有4-羟基-4′-[(对烷氧联苯氧基)羰基]戊酸的新型三臂液晶材料,并以柔性间隔物连接三[-4-(对烷氧联苯氧基)羰基]戊酸间苯三酚酯,并用光谱分析方法对其进行了表征。采用差示扫描量热法(DSC)、偏光显微镜(POM)和x射线衍射分析研究了相变温度和相行为。所有合成的化合物均表现为向列相,中间相的稳定性取决于化合物末端烷氧基的长度。关键词:玻璃相,液晶,向列相,星形,玻璃化
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Synthesis and characterization of three-arm star-shaped glassy liquid crystal containing biphenyl esters
A new three arm liquid crystalline material containing 4-Hydroxy-4`-[(p-alkoxybiphenyloxy) carbonyl] valeric acid and linked by flexible spacers tris[-4-(p-alkoxybiphenyloxy)carbonyl] valeric acid phloroglucinol ester has been synthesized and characterized by spectroscopic methods of analysis. The transition temperatures and phase behaviors were studied by Differential Scanning Calorimetry (DSC), Polarizing Optical Microscopy (POM) and X-Ray diffraction analyses. All the synthesized compounds exhibited enantiotropic nematic phase and the stability of the mesophase depends on the length of the terminal alkoxy group for the compounds studied. Keywords: Glassy phase, Liquid crystal, Nematic phase, Star shaped, Vitrification
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