Nafion-stabilized magnetic nanoparticles (Fe3O4) for [Ru(bpy)(3)](2+) (bpy = bipyridine) electrogenerated chemiluminescence sensor

A highly sensitive and stable [Ru(bpy)(3)](2+) ECL sensor has been fabricated based on the multilayer films of Nafion-stabilized magnetic nanoparticles (Nafion/Fe3O4) formed on a platinum electrode surface by means of an external magnet.