Synthesis and properties of electrical conducting poly(thienylene) derivatives with liquid crystallinity

Abstract

To develop optically and electrically anisotropic materials, we synthesized poly(thienylene) derivatives with liquid crystalline substituents at the 3-position of thiophene ring. Polythiophene derivatives were synthesized with Ni(0) catalyst, while polythienylenevinylene derivatives were synthesized with Heck reaction following Stille reaction. All polymers showed liquid crystalline phases in cooling process. The oriented film of the polymer exhibited an anisotropic fluorescence.