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We synthesized an oligomer of O-PPV [poly(2,5-diphenylene-1,3,4-oxadiazolyle-4,4'-vinylene)] with 4 repeat units. As oxadiazole in the PPV main chain is an acceptor, intermolecular interaction of O-PPV will increase and even produce a charge-transfer complex (excimer) in solid-state. So we may obtain the information of electronic structures on conjugated polymers by detecting the PL characteristics...
Photoluminescent and electroluminescent properties of poly(2-methoxy-5-nonyloxy-p-phenylene vinylene) (MN-PPV), one of the soluble poly(p-phenylene vinylene) (PPV) derivatives is synthesized through a dehydrochlorination reaction. The EL peak at 576nm with a low threshold voltage in the monolayer structure is independent of the bias. When the Alq 3 layer is very thin (=<10nm) in the bilayer...
We investigated the photoluminescence (PL) quenching of the copolymer, poly(2,5-dimethyl-phenylenevinylene-co-2-methoxy-5-hexyloxy-phenylenevinylen e (DMPPV-co-MHOPPV), focusing on the difference between pure films and copolymer-poly(ethylene oxide) (PEO) blends with and without applied bias in the LEDs. PL quenching of DMPPV-co-MHOPPV is decreased by dispersion in an inert host, PEO. Results show...
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