Synthesis and electrical properties of poly(μ-1,4-diisocyanobenzene) octacyanophthalocyaninatoiron(II)

Poly[(μ-1,4-diisocyanobenzene)octacyanophthalocyaninatoiron(II)],[FePcOC(dib)]n, was synthesized and its doping with lithium was studied. The chemical, spectral and electric properties of bridged polymer were characterized by IR, UV–vis and 1H-NMR. The chain length of [FePcOC(dib)]n determined by gel permeation chromatography and TOF-mass was 12–15. The coordination state of the central metal of [FePcOC(dib)]n was iron(II) according to the results of ESCA analysis. In spite of its relatively large inter-ring distance, [FePcOC(dib)]n showed powder conductivity in the range of 10−7 S/cm. With lithium-doping, its electrical conductivity was improved by two orders of magnitude.