Highly dipolar mesogen-free liquid crystalline polymers are excellent candidates for achieving large spontaneous polarization under relatively low electric fields for advanced electrical and optical applications. In this report, the effect of grafting density of n-dodecylsulfonyl side chains on the mesogen-free liquid crystalline self-assembly of comb-like isotactic poly(oxypropylene) was studied. When the grafting density was 80–100%, a stable 2₁ helical chain conformation was induced by the strong dipole-dipole interactions among the sulfonyl groups in the side chains. Consequently, a smectic A self-assembly was induced. When the grafting density decreased to 60–80%, a poor and possibly imbalanced 2₁ helical chain conformation was formed due to the frequent absence of the n-dodecylsulfonyl side chains along the main chain. As a result, a hexagonal columnar self-assembly was realized. This study demonstrated that a delicate interplay between the molecular defects and dipole-dipole interactions can lead to different self-assembly structures.

高度偶极无液晶元的液晶聚合物是用于高级电气和光学应用的，在相对较低的电场下实现大自发极化的极佳候选者。在此报告中，研究了正十二烷基磺酰基侧链的接枝密度对梳状全同立构聚氧丙烯无液晶元液晶自组装的影响。当接枝密度为80–100％时，侧链中磺酰基之间的强偶极-偶极相互作用会诱导出稳定的2 ₁螺旋链构象。因此，诱发了近晶A自组装。当嫁接密度降低到60–80％时，效果很差，甚至可能不平衡2 ₁由于沿主链经常不存在正十二烷基磺酰基侧链，形成了螺旋链构象。结果，实现了六边形柱状自组装。这项研究表明，分子缺陷与偶极-偶极相互作用之间的微妙相互作用会导致不同的自组装结构。