Electrosynthesis of all-electroactive copolymers based on phenylene and carbozolylene units

Cathodic reduction of mixtures of 4,4′-dibromobiphenyl and 3,6-dibromo- N-ethylcarbazole, in the presence of zero-valent nickel complexes, leads to [phenylene-carbazolylene] random copolymers. According to the coupling mechanism and to physical features, the copolymer chains are expected to have a l...

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Bibliographic Details
Published in:Synthetic metals 1989-11, Vol.33 (1), p.57-64
Main Authors: Aboulkassim, Aïcha, Siove, Alain, Ades, Dominique, Chevrot, Claude
Format: Article
Language:English
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Summary:Cathodic reduction of mixtures of 4,4′-dibromobiphenyl and 3,6-dibromo- N-ethylcarbazole, in the presence of zero-valent nickel complexes, leads to [phenylene-carbazolylene] random copolymers. According to the coupling mechanism and to physical features, the copolymer chains are expected to have a linear well-defined structure. Copolymers with a continuous molar ratio of comonomer units can be synthesized and the resulting properties lie between those of polyparaphenylene and the poly[ N-ethyl-3,6-carbazolediyl] ones. In particular, partial solubility in organic media was obtained for copolymers rich in carbozolylene units, whereas higher conductivity was observed with materials rich in phenylene units ( σ = 1 μ −1 cm −1).
ISSN:0379-6779
1879-3290
DOI:10.1016/0379-6779(89)90857-6