Synthesis and Mesomorphic Properties of Acyclic Amines with 5-Alkoxytropon-2-yl Groups

Abstract

Abstract: Liquid‑crystalline compounds with 5‑alkoxytropon‑2‑yl groups were synthesized from acyclic amines such as tris(2‑aminoethyl)amine, 1,5‑diaminopentane, bis(2‑aminoethyl)ether, diethylenetriamine, and N‑(3‑aminopropyl)‑1,3‑propanediamine. All of the acyclic amines functionalized with 5‑alkoxytropon‑2‑yl groups exhibited the SmA phase. The POM and XRD analyses revealed that these compounds possess a high degree of self‑orienting ability and adopt a homeotropic alignment in the SmA phase.