Synthesis and Mesomorphism of Polymers with Banana-ShapedMesogens in the Main Chain

摘要

In this work, we report the synthesis andrncharacterization of azomethine-ester polymers thatrnconsist of banana-shaped mesogen in their backbone.rnTwo parts of the key structure of five-ring bent-corernmesogen were modified by connecting different anglernof central unit (Ar), and introducing lateralrnsubstituent into the outer ring (X). The syntheticrndetails includes (1) placing the dioxydodecamethylenernunit as a flexible spacer, (2) possessing 2,3- or 2,7-rnnaphthylene, or 1,2-phenylene connection on therncentral unit, and (3) introducing fluorine or chlorinernsubstituent (X = F or Cl) into the outer phenylene unit.