Luminescent behavior of soluble poly(para-phenylene vinylene) copolymers
β Scribed by B.J. Sun; Y.-J. Miao; G.C. Bazan; E.M. Conwell
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 415 KB
- Volume
- 260
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
Soluble diblocks with well-defined lengths of poly(phenylene vinylene), PPV, and an inert polymer, polynorbornene, PNBE, have been made by a new type of synthesis. For dilute solutions and relatively short lengths of PPV the quantum efficiency of luminescence is over 70% and the radiative lifetimes are 3 ns. We find that with increasing concentration of PPV in solution the luminescence efficiency decreases, which we propose is due to formation of polaron pairs.
π SIMILAR VOLUMES
We report investigations of electroluminescence and photoluminescence in a blue-luminescent soluble ladder-type para-phenylene copolymer, which contains additional segments of 2-phenyl-5-(4-biphenyl)-l,3,4-oxadiazole (PBD) groups in the polymer main chain. The PBD segments and the ladder-type copoly
## Abstract Three alternating conjugated copolymers of cyanosubstituted poly(__p__βphenylene vinylene) (CNβPPV) with phenylene ethynylene and thienylene vinylene moieties, **P1, P2,** and **P3,** were synthesized via crossβcoupling polycondensation with Pd(PPh~3~)~2~Cl~2~ as a catalyst. Their struc