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- W2059969708 abstract "An integrated chemical and physicochemical investigation of the cofacially joined metallomacrocyclic polymers [M(Pc)O]n (M = Si, Ge, Si) and the halogen-doped, electrically conductive derivatives {[M(Pc)O]Xy}n (X = I; M = Si, Ge; X = Br; M = Si) is reported. The structures of these polymers have been studied by X-ray diffraction, resonance Raman, transmission infrared, transmission optical, 13C CP-MAS NMR, and EPR spectroscopy. The picture which emerges is that of inhomogeneously doped, mixed-valent arrays of predominantly ligand-oxidized (π radical cation) metallomacrocycles. Magnetic susceptibility and optical reflectivity measurements reveal a progressive increase in tight-binding bandwidths with decreasing interplanar (ring-ring) spacing. Studies of dc electrical conductivity as a function of dopant level and temperature suggest that transport in these heterogeneously doped materials can be satisfactorily described with percolation theory and fluctuation-induced carrier tunneling. The conductivity is a sensitive function of the ring-ring stacking separations; evidence is presented for “metal-like” (dσ/dt < O) conductivity in the {[Si(Pc)O]I1.12}n stacking direction with σ ≈ 100 Ω−1 cm−1." @default.
- W2059969708 created "2016-06-24" @default.
- W2059969708 creator A5000731301 @default.
- W2059969708 creator A5003866526 @default.
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- W2059969708 creator A5041808721 @default.
- W2059969708 creator A5054123825 @default.
- W2059969708 creator A5054163862 @default.
- W2059969708 date "2007-03-08" @default.
- W2059969708 modified "2023-10-14" @default.
- W2059969708 title "New electrically conductive polymers. Dopant and architectural effects on the collective properties of cofacially joined metallophthalocyanines" @default.
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- W2059969708 doi "https://doi.org/10.1002/polc.5070700103" @default.
- W2059969708 hasPublicationYear "2007" @default.