Poly(1-vinylimidazole) grafted on magnetic nanoparticles - attainment of novel nanostructures

Abstract

New magnetic core shell nanoparticles were synthesized consisting of a magnetite core and a poly (1-vinylimidazole) shell. Magnetite nanoparticles were first coated by bis(methacryloyloxyethoxy)phosphate as a reactive alkene-containing anchor followed by radical polymerization of 1-vinylimidazole. The poly(1vinylimidazole) coated magnetic nanoparticles (MNP-PVIm) represent versatile magnetic nanoplatforms capable of complexing different types of metals. Their chemical structure was investigated by Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS). The novel nanostructures MNP-PVIm were used as a promising platform for complexing rare earth metals, as gadolinium, terbium, erbium and europium. The morphology and the content of rare earth metals were determined by Transmission Electron Microscopy Energy-Dispersive X-ray spectroscopy (TEM-EDX). The magnetization curves of MNP-PVIm demonstrate the superparamagnetic nature of these nanostructures.

Aminopropylimidazole as an Advantageous Coating in the Synthesis of Functionalized Magnetite Nanoparticles

“…Amongst other more versatile stabilizers, alkylamines and imidazole were found to be well-known ligands for metal ions. For example, polyvinylimidazole was successfully used to prepare coated magnetite nanoparticles [14]. Magnetite (Fe 3 O 4 ) is the most often used magnetic material in the MNP field.…”