Organic electroluminescent devices having poly(dialkoxy-p-phenylene vinylenes) as a light emitting material

Oligo-2,6-naphthylenevinylenes – New Building Blocks for the Preparation of Photoluminescent Polymeric Materials

“…This shift is smaller than that observed for other pairs affinity can be tuned. To be able to tune the electron affinity of this type of materials is of great importance considering of cyano-substituted materials and unsubstituted analogues (cyano-substituted dialkoxy-PPV [8] and the unsubstituted that improved efficiencies in light emission of LEDs come from an appropriate balance of charge injections between analogues [38] show emission maxima at aproximately 695 and 580 nm, respectively). This reduction of the observed electrodes and luminescent materials.…”

Comparison of poly(2,5‐dibutoxy‐ p ‐phenylenevinylene)s synthesized by two different methods

“…In the former case, the emitting wavelength of the main peak is nearly the same as that of fluorescent light but with a second peak at 640 nm. Doi et al 7) also indicated the character of double peaks of electroluminescence for other alkoxy substituted PPV prepared by other methods. However, the electroluminescent properties of the PDBOPV synthesized by the PTC method are quite different.…”

“…Bredas et al 6) summarized the effects of substituents on the phenyl group and the vinyl group of PPV on the electroluminescent properties. Doi et al 7) studied electroluminescent devices, using Mg-Al alloy as cathode and poly(2,5-dialkoxy-p-phenylenevinylene) with alkoxy groups of C 5 to C 18 obtained by dehydrohalogenation pro-cess using t-C 4 H 9 OK or by the Wessling method as emitting components.…”

Novel phenoxy and thiophenoxy substituted poly(para-phenylenevinylene)s

“…Subsequent polymer analogous 1,2-elimination of HBr results in the generation of the p-conjugated PPV backbone. We have carried out our first couplings under the standard Gilch conditions 10) , as a homogeneous reaction in THF at temperatures of -25 8C to 20 8C. In this case, the polymerization products have precipitated out from the THF solution, resulting in a gelation of the reaction mixture.…”