Colloidal inorganic oxides used as a precursor to structured materials

COLL 434

Jason P. Durand1, Josanlet C. Villegas1, Oscar Giraldo2, and Steven L. Suib1. (1) Department of Chemistry, University of Connecticut, 55 North Eagleville Rd., U-3060, Storrs, CT 06269, (2) Departamento de Física y Química, Universidad Nacional de Colombia, Manizales, Colombia
A study of inorganic oxide colloidal solutions to form regular, controlled patterns onto a substrate via self-assembly occurs readily in the presence of organic surfactants. The direction of our current research is to investigate a variety of transition metal precursors, with an emphasis on manganese oxide, in an attempt to mimic previous work1 . The reduction of organic-permanganate salt, using an alcohol-water solvent mixture, is used to form a stable colloidal solution of manganese oxide nanoparticles. The organic-inorganic particles exhibit a growth process2,3,4 to form well ordered patterns, with structure, of manganese oxide onto hydrophilic substrates. The formation of colloidal solutions that retain these characteristics is currently being studied via the oxidation of lower valency state manganese precursors. Other forms of manganese colloids containing iron, copper, and nickel may be useful in this pattern process for the area of magnetism.