Synthesis and characterization of carbon nanotubes covalently functionalized with amphiphilic polymer coated superparamagnetic nanocrystals

► Preparation of superparamagnetic nanoparticles-carbon nanotube composites. ► Polymer coating the nanoparticles passivates them and allows regioselective attachment to CNTs. ► The majority of CNT surface remains available for further modification. ► “Magnetic nanotube” composites are characterized using a variety of techniques.