groups, has been designed. When this heptamer was treated with octyl β-d-glucopyranoside, a circular dichroism (CD) band was induced at around 330 nm, which corresponds to the formation of a chiral ethynylpyridine helix. The CD band was enhanced by the addition of a diamine and a diammonium dumbbell as a result of the formation of a [3]rotaxane structure linked to the terminal pyridines of the helical
间
乙炔基
吡啶 (2,6-pyridyleneethynylene) 低聚物的螺旋结构已通过机械交联稳定。已经设计了一种七聚低聚物,其中两个末端
吡啶环带有两个
甲醛基团。当该七聚体用辛基 β-d-
吡喃
葡萄糖苷处理时,在 330 nm 附近诱导出圆二色性 (CD) 带,这对应于手性
乙炔基
吡啶螺旋的形成。由于形成与螺旋结构末端
吡啶连接的 [3] 轮烷结构,CD 带通过添加二胺和二
铵哑铃而增强。由于两次交联事件,含有四个二甲芳基
芳烃单元的十聚低聚物在类似实验中表现出更强的 CD 增强。