Syntheses and optical properties of poly(o-phenylene vinylene)s

Poly(p-phenylene vinylene) (PPV) derivatives have been extensively studied as photoluminescence and electroluminescence materials. Recently, meta-phenylene has been incorporated into PPVs for conjugation-length control and luminescence enhancement. Here, we report three poly(o-phenylene vinylenes) (oPVs). Among them, Polymer II exhibits high molecular weight, good processibility and high photoluminescence quantum efficiency in both solution and solid state, making it an attractive candidate for light-emitting diode applications.