Abstract
A series of light-emitting polymers, poly(2-alkoxy- p-phenylene)s (RO-PPPs), was synthesized by nickel-catalyzed coupling of 2,5-dichloro-alkoxybenzene, which has intense deep-blue photoluminescence (peak at 412 nm) from the solid film and has good solubility in common organic solvents. The light-emitting diode was constructed with the single emitting layer structure ITO/RO-PPP/Ca/Ag having a turn-on electric field of 1.3 × 10 6 V/cm and brightness over 30 cd/m 2 at a current density of 7 mA/cm 2.
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