作者:Narayanaswamy Jayaraman、Madan Kumar Singh、D. S. Shankar Rao、S. K. Prasad
DOI:10.1039/b618753f
日期:——
A homologous series of bivalent glycolipids constituted of 1,3-bis-O-(β-D-glucopyranosyl)-2-O-alkyl glycerol, bearing two sugar head groups and one alkyl chain on a glycerol backbone, was synthesized. The mesomorphic behaviour was investigated with the aid of polarizing optical microscopy, differential scanning calorimetry and X-ray diffraction methods. The homologous members exhibit a smectic A phase, consistently with a partial bilayer structure. From experimental d-spacing and computationally derived length of the molecules, it is suggested that a partial interdigitation of the molecules is present in the bilayer structure.
合成了一系列由1,3-双-O-(β-D-吡喃葡萄糖基)-2-O-烷基甘油组成的同源二价糖脂,在甘油主链上带有两个糖头基团和一个烷基链。借助于偏光光学显微镜、差示扫描量热法和X射线衍射方法研究了介晶行为。同源成员表现出近晶A相,与部分双层结构一致。根据实验的 d 间距和计算得出的分子长度,表明双层结构中存在分子的部分叉指。