Abstract
AbstractOligomeric oligoaniline derivatives of diethyl Δ1,4‐dihydroterephthalate (V–VIb–d) of diethyl terephthalate (VIIb–d) and linear oligoanilines (Ib–d) were synthesized. Ultraviolet spectra and polarographic half‐wave potentials corresponding to the first degree of oxidation of linear oligoanilines of type (I) were studied, their iodine complexes prepared, and their electric and magnetic properties studied. Increase of chain length of the base causes increase of λmax of ultraviolet bands, decrease of ionization potential, and increase of electric conductivity of iodine complexes in solid state. The properties of the five‐membered oligomer (Ic) differ only slightly from analogous properties of the seven‐membered oligomer (Id); the same holds in the case of their iodine complexes. Such substances may be regarded as in some respects models of a linear polyaniline polymer or its complexes.
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