New Metal Complexes Derived from Guanidine-Containing Dialdehyde Cellulose

Resumo

New metal-polymer complexes of iron-containing composites of dialdehyde cellulose with guanidine acrylate or methacrylate have been developed. The structure and properties of these materials have been established by physicochemical testing. The polymeric iron-containing complexes obtained by radical polymerization (in situ) are formed due to intra- and intermolecular coordination of the metal ions with carboxylate oxygen atoms, and amino group nitrogen atoms of the guanidine fragment as well as hydroxyl groups of dialdehyde cellulose. The complexes obtained by mixing the metal salt with polymers in aqueous solution are formed due to replacement of water molecules in the coordination sphere of the solvated metal ions by hydroxyl groups of dialdehyde cellulose and the reaction of metals with carboxylate ions and guanidine groups of the polymer located on the composite surface. Guanidine-containing cellulose composites were found to be effective matrices for stabilizing the size of the growing particles containing a new metallic phase and to form polymer complexes with a narrow size distribution of both micro- and nanoparticles. These results suggest that the synthesized compounds hold promise for reagent transport when using composites as catalysts for various chemical reactions or for targeted delivery of drugs.