The polymer encapsulated magnetic nanoparticles were obtained by suspension polymerization of styrene in the aqueous dispersion of magnetite. Functionalization of capsules was carried out by adsorption of BaZrO₃luminescent nanocrystals on the polystyrene shell. Followed oxidative polymerization of aniline on the capsule surface leading to the additional encapsulation of the microspheres by conducting substance-polyaniline. It was found that adsorption of BaZrO₃nanocrystals on polystyrene shell leads to modification of CL spectra due to chemical interaction between polystyrene and BaZrO₃nanocrystals.