LIGHT-EMITTING PROPERTIES OF MONOSUBSTITUTED PPV DERIVATIVES

Mono-substituted PPV derivatives were synthesized through the water-so luble or the organic soluble precursor methods and their optical prope rties were characterized. The EL devices were fabricated with mono-sub stituted PPV derivatives as emitting polymers, and ITO and aluminum as a positive and a negative electrode, respectively. Operating voltages of these devices ranged from 10 to 20 V, and emitting peaks were at a bout 540 - 590 nm depending on the polymers. Photoluminescence of mono -substituted PPV derivatives were also studied.