作者:Hugo Gallardo、Marli Ferreira、André A. Vieira、Eduard Westphal、Fernando Molin、Juliana Eccher、Ivan H. Bechtold
DOI:10.1016/j.tet.2011.10.019
日期:2011.12
In this study, the synthesis, characterization, and mesomorphic properties of ten new bent-rod compounds containing two units of 1,2,4-oxadiazoles are reported. In order to understand the relationship between the structure and the mesomorphic behavior, molecules containing a variety of polar substituents (i.e., I, NO2, NH2, OH) on the central rigid core were prepared. The hexagonal columnar mesomorphism
在这项研究中,报道了含有两个单元的1,2,4-恶二唑的十种新的弯曲杆化合物的合成,表征和介晶性质。为了理解结构与介晶行为之间的关系,制备了在中央刚性核上包含多种极性取代基(即I,NO 2,NH 2,OH)的分子。通过DSC和POM表征六边形柱状的同质性,并通过XRD研究确定了中间相的性质。自组装的驱动力可以通过脂族部分和极性部分之间的微分离来解释,从而在单个圆盘内产生二聚体,三聚体和四聚体。