Design and synthesis of poly(p-phenylenevinylene) derivative with triphenylamine segments on polymer backbone

A new approach to the synthesis of conjugated polymer with triphenylamine (TPA) segments was presented. Electrochemical reversibility and thermal stability were found for this polymer. The introduction of TPA segments to the polymer backbone has modified its optical and electrochemical properties. The estimated highest occupied molecular orbital (HOMO) of 5.4 eV from electrochemical measurement suggested that it could be a low hole injection barrier when used as the active layer in the polymer LED. High brightness emission and improved efficiency were obtained in a double-layer device.