2008
DOI: 10.1002/app.28477
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Synthesis and characterization of electrically conducting copolymers based on benzene and biphenyl

Abstract: Poly(p‐phenylene) (H‐PPP), which is one of the firstly investigated conducting polymer, has the disadvantage of difficult processability because it is infusible and insoluble. The use of biphenyl instead of benzene leads to ortho‐, meta‐, para‐polyphenylenes (H‐PP) which are more soluble and easier to be processed, however their electrical conductivity is lower. Copolymers of polyphenylenes (C1 and C2) and corresponding homopolymers (H‐PPP and H‐PP) were produced by the oxidative cationic polymerization of ben… Show more

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Cited by 10 publications
(22 citation statements)
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“…Polyphenylenes (PPs) have attracted much interest among various CPs because of their high stability in air even at high temperatures due to the aromatic nuclei 8–10. PPs have been extensively investigated, particularly as active materials for use in light‐ emitting diodes (LEDs) and polymer lasers.…”
Section: Introductionmentioning
confidence: 99%
“…Polyphenylenes (PPs) have attracted much interest among various CPs because of their high stability in air even at high temperatures due to the aromatic nuclei 8–10. PPs have been extensively investigated, particularly as active materials for use in light‐ emitting diodes (LEDs) and polymer lasers.…”
Section: Introductionmentioning
confidence: 99%
“…Indeed, poly (paraphenylene) having only para-linkages, exhibits a very low weight loss (undoped: 25%, doped: 40% up to 1000 o C). 42 Consequently, the disadvantage of meta-linkages of biphenyl units does not appear in the macromolecules of the copolymers and the latter follows a similar thermal degradation like PTh 1.71 . Figure 6 presents the SEM micrographs of copolymers and homopolymers.…”
mentioning
confidence: 98%
“…10,42 The band at $ 805 cm À1 is characteristic of the parasubstitution and the bands at 765 cm À1 and 695 cm , the stronger bands at 765 cm À1 and 695 cm À1 can be attributed to meta-substitution. The small band at 740 cm À1 indicating ortho-substitution is absent from the spectra.…”
mentioning
confidence: 99%
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“…Different to the linear para-polyphenylenes, the poly(mphenylene)s would be expected to have a helical conformation [2]. Although steric distortion can weaken the conjugation, the conformation of the polymer can not only influence its optical and electrical properties greatly [3], but also allow the polymers to undergo either intrachain self-organization or interchain self-assembly for materials applications [4,5].…”
Section: Introductionmentioning
confidence: 99%