Synthesis and study of mesomorphic properties of azoester compounds
Synthesis and study of mesomorphic properties of azoester compounds
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DOI：
10.1080/15421406.2016.1177880
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发表时间：
2016-07
影响因子：
0.7
通讯作者：
Vinay S. Sharma;R. Patel
中科院分区：
文献类型：
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作者：
Vinay S. Sharma;R. Patel
摘要为了研究末端取代对介晶性的影响，合成了一系列新的基于偶氮酯的同系物。研究了介晶核的结构对介晶性的影响，考察了烃链长度和末端柔性对介晶性的影响。在本研究中，我们代表了一个系列，由十三个（C1-C18）同源。其中，C1-C3同系物为非介晶。而C4-C18则表现出近晶型和近晶型两种对映中间相。分析和光谱数据证实了同系物的分子结构。通过元素分析、傅里叶变换红外光谱（FTIR）和核磁共振氢谱（1H NMR）对所有化合物进行了表征。用光学偏光显微镜、差示扫描量热仪（DSC）和PXRD测试了它们的介晶性能。
ABSTRACT In order to investigate the influence of the terminal substitution on mesomorphism, the newly synthesized homologues series based on azoester have been synthesized. The influence of the structure of the mesogenic core has been present in this study, effect of hydrocarbon chain length and flexibility at terminal side effect on mesomorphism was represents in this case. In this investigation, we represent a series consisting of thirteen (C1–C18) homologue. In which, C1 to C3 homologue are nonmesomorphic. While C4–C18 shows smectic as well as nematic mesophase enantiotropically. Analytical and spectral data confirmed the molecular structures of homologues. All these compounds were characterized by elemental analysis and Fourier transform infrared [FTIR] and 1H NMR. Their mesomorphic properties were measured by optical polarized light microscopy and differential scanning calorimetry (DSC) and PXRD.