Journal of the Chemical Society - Faraday Transactions p. 321 - 326 (1994)
Update date:2022-08-28
Topics:
Matsuda, Junzo
Aramaki, Kunitsugu
Nishihara, Hiroshi
Electrochemical oxidation of 9-hexylfluorene and 1-hexylindene in 0.1 mol dm-3 Bu4NBF4-nitromethane affords ?-conjugated polymers, PHF and PHI, respectively, which are fusible and soluble in common organic solvents.Electrode materials affect the formation of the polymers significantly; the molecular weight of PHF increases in the order, glassy carbon (GC) < indium-tin oxide (ITO) = SnO2, and that for PHI, SnO2 << GC < ITO. 1H NMR and IR spectra of the polymers indicate that PHF and PHI comprise mainly linkage of 1,4-fluorenylene and 2,4-indenylene units, respectively.PHF undergoes a reversible oxidation reaction in acetonitrile, whereas electrochemical oxidation of PHI is irreversible.The electrical conductivities of PHF and PHI doped with SO3 are 1E-5 and 1E-6 S cm-1, respectively, at room temperature.
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