Spectral Characteristics and Electronic Conductivity of Composites Obtained by Reaction of Iodine Vapor with Isostructural Zinc- and Nickel-Containing Metal–Organic Frameworks

It was shown that reaction of the isostructural metal–organic frameworks formed by cationic macrocyclic complexes of nickel or zinc and 4,4′-diphenyldicarboxylate or 4,4′-oxybisbenzoate with iodine vapor leads to the formation of composites in which the iodine content is substantially higher than in the case of the materials obtained by sorption from solutions. It was established that in the case of interaction of the nickel-containing MOFs with iodine the metal ion is oxidized with the formation of nickel(III), leading to increase of their sorption capacity compared with the zinc-containing analogs. It was shown that the composites based on zinc compounds have higher electronic conductivity than the analogous compounds of nickel.