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White light emission was obtained from a light-emitting diodes (LEDs) prepared from an immiscible polymer blend consisting of poly(9,9′-dihexylfluorene-2,7-divinylene-m-phenylenevinylene-stat-p-phenylenevinylene) (PDHFPPV) and poly(2-methoxy-5-(2′-ethy-hexyloxy)-1,4-phenylenevinylene) (MEH-PPV). An inefficient energy transfer between PDHFPPV and MEH-PPV was observed because the blends are partially...
We synthesized a star copolymer of poly(vinylcarbazole) (PVK) branched from a fullerene (C 60 ) center, and investigated its optical absorption and photoluminescence properties. The chemically hybridized PVK-C 60 was then employed as a hole-transporting layer of the electroluminescent device with a poly(9,9 ' -dihexylfluorene-2,7-divinylene-m-phenylenevinylene-stat-p-phenyle...
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