Abstract
The Janus nanoparticles (JNPs) have been considered as dual-functionalized devices. One of the materials which can be used in the hybrid Janus nanoparticles is superparamagnetic iron oxide nanoparticles (SPIONs). In this work, a novel procedure based on anisotropic surface modification of SPIONs through Pickering Emulsion was utilized to obtain bi-functional SPIONs with thiol and triple bond functional groups. These surface-modified nanoparticles have a great potential to graft a variety of polymers with different molecular weights to its surface. Low molecular ATRP-synthesized poly (2-hydroxyethyl methacrylate) (PHEMA) as a hydrophilic polymer and polydopamine (PDA) as a hydrophobic one were synthesized and were covalently anchored to the surface of bi-functional SPIONs through double click reaction, i.e. [2 + 3] cycloaddition and thiol-ene reaction. As a result, polymeric Janus nanoparticles with amphiphilic and magnetic properties were obtained. The prepared polymers and SPIONs were fully characterized by various methods, as well as final polymeric Janus nanoparticles.
Published Version
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