Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1802462 | Journal of Magnetism and Magnetic Materials | 2009 | 5 Pages |
Abstract
Colloidal nanoparticles of Fe3O4 (4 nm) were synthesized by high-temperature hydrolysis of chelated iron (II) and (III) diethylene glycol alkoxide complexes in a solution of the parent alcohol (H2DEG) without using capping ligands or surfactants: [Fe(DEG)Cl2]2−+2[Fe(DEG)Cl3]2−+2H2O+2OH−→Fe3O4+3H2DEG+8Cl− The obtained particles were reacted with different small-molecule polydentate ligands, and the resulting adducts were tested for aqueous colloid formation. Both the carboxyl and α-hydroxyl groups of the hydroxyacids are involved in coordination to the nanoparticles’ surface. This coordination provides the major contribution to the stability of the ligand-coated nanoparticles against hydrolysis.
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Authors
Galina Goloverda, Barry Jackson, Clayton Kidd, Vladimir Kolesnichenko,