In situ chemical formation of iron phthalocyanine (FePc) monolayer on the surface of magnetite nanoparticles

Abstract

The surface of magnetic nanoparticles (Fe₃O₄) has been modified chemically with iron phthalocyanine monolayer. The under-coordinated Fe sites on the surface of SCFD-derived Fe₃O₄ nanoparticles (NPs) and phthalic nitrile acted as template ions and components, respectively, for the formation of FePc. The presence of chemical linkages between in situ formed FePc monolayer and the surface of Fe₃O₄ NPs has been characterized by TEM, FTIR, UV-Vis, MS and TG-DSC etc. As compared to the neat Fe₃O₄ nanoparticles, the FePc monolayer-protected Fe₃O₄ nanoparticles (FePc@Fe₃O₄ NPs) that resulted could be dissolved in common organic solvents and showed much higher antioxidativity to oxygen.