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Homogeneous films of poly(1,4‐phenylene) (PPP) can be deposited on various materials by electro‐reduction of 4,4′‐dibromobiphenyl in presence of a nickel complex catalyst. UV and IR spectra indicate that the polymer has a regular structure (exclusively 1,4‐phenylene units) and an unusual average molecular weight. The nascent PPP films are obtained in their neutral from and can be either reduced or oxidized.
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Fauvarque et al. (1987) studied this question.
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