In thin-film electroluminescent devices, conjugated polymers are used as efficient emitters. Here the authors demonstrate that thin films of combined anionic (see Figure for the chemical structure) and cationic water-soluble poly(p-phenylene) polyelectrolytes can be readily processed into multilayer light-emitting devices. Fabrication with solely one type of conjugated backbone—as here—may greatly improve device efficiency.
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Baur et al. (1998) studied this question.