A method for synthesis of 1⁃methyl⁃4⁃phenoxybenzene was studied. Using p⁃methyl bromobenzene and phenol were catalyzed by CuCl, K3PO4 was used as a base, 1,4⁃dioxane was used as reaction solvent and the reaction was carried out at 110 ℃ for 12.0 h to construct a new C-O bond and achieve coupling reaction. The reaction showed strong selectivity and the yield was 72% under the best reaction conditions. The structure of the target product 1⁃methyl⁃4⁃phenoxy benzene was further characterized by nuclear magnetic resonance (NMR).

The MEH-PPV electroluminescent materials were synthesized by the dehalogenation condensation method using potassium t-butoxide as the catalyst and tetrahydrofuran as the solvent. The effects of reaction temperature, reaction time, catalyst, solvent and other conditions were studied in details. The synthesis of MEH-PPV requires no heating and the yield is good when THF as the solvent in room temperature. And no gelation appeared during the reaction. The relative molecular mass of MEH-PPV could be controlled well by adding p-methoxyphenol in the reaction system.