A room-temperature liquid crystalline polymer based on discotic 1,3,4-oxadizole

Abstract

A side-chain polymer POXD and the corresponding monomer MOXD based on discotic 1,3,4-oxadiazole have been synthesized and characterized. Both POXD and MOXD exhibit liquid crystalline behaviors at room temperature with excellent thermal stability, while the mesomorphic temperature range of POXD is much wider than that of MOXD. In addition, they are photoluminescent in solution, in the solid state and in liquid crystalline phases. Notably, the fluorescent intensity of POXD is almost 12 times that of MOXD in both the solid state and liquid crystalline phases.