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.