Synthesis of a segmented conjugated polymer chain giving a blue-shifted electroluminescence and improved efficiency

Abstract

Segmented polymers 4 with randomly arranged sequences of saturated and unsaturated units are produced by the thermal treatment of the methoxy leaving group precursor polymer 2 to poly(p-phenylenevinylene) (PPV); these polymers are used as a light-emitting layer in an electroluminescent polymer diode, and the light output is blue-shifted (relative to PPV) and showed a twofold increase in efficiency.