Synthesis and electroluminescence performance of three novel poly(phenylene vinylene) (PPV) derivates containing electron withdrawing fluorine atom and twisted terphenyl were reported. The structures of the polymers were characterized and determined by ¹H NMR, ¹³C NMR and elemental analysis. Due to fluorine atom and terphenyl structure, these polymers are thermally stable with decomposition temperature of about 400 ℃. The peaks of the solid-state photoluminescence (PL) of Pa and Pc are 499 and 585 nm, respectively. They were blue-shifted compared to those of PPV and MEH-PPV, respectively, which was attributed to their twisted terphenyl structure. The double-layer devices (ITO/PEDOT/Polymer/Ba/Al) were fabricated. They held low onset voltage (about 4 V). The peaks of electroluminescence (EL) were 494 and 604 nm, and then their maximum brightness values were 598 cd•m^－2 (24 V, 100 mA•cm^－2) and 203 cd•m^－2 (15 V, 80 mA•cm^－2), respectively. These resulting polymers are promising materials for OLED.

Key words: poly(p-phenylene vinylene), conjugated polymer, fluorine, synthesis, organic light-emitting device