1 Results The development of novel surface-active block, comb-like and branched copolymers with peroxide-containing chains as well as derived functional luminescent and magnetic nanoparticles are the objectives of presented study. Main experimental approaches based on tailored synthesis of the oligoperoxide surfactants of desired structures and derived coordinating complexes of transitional and rare earth elements are developed. Functional oligoperoxide based possibilities of the synthesis of luminescent, magnetic and other functional nanocomposites with controlled size distribution, functionality, reactivity and biocompatibility are presented. Developed methods provide combining the stage of formation of polymeric, metal and metal-oxide nanoparticles with the stage of their surface irreversible modification by functional fragments capable of radical and other reactions including binding physiologically active substances. Novel nanoparticles are studied by chemical, colloidal-chemical, and rheological methods, X-ray diffraction technique, luminescent spectroscopy, transmission and scanning electronic microscopy. The availability of ditertiary peroxide fragments on nanoparticle surface causes their ability to radical grafting functional polymer chains. Functional nanoparticles developed are studied in phagocytosis, as markers of pathological cells, antimicrobial remedies and nanocarriers for targeted drug delivery. 1 Results The development of novel surface-active block, comb-like and branched copolymers with peroxide-containing chains as well as derived functional luminescent and magnetic nanoparticles are the objectives of presented study. Main experimental approaches based on tailored synthesis of the oligoperoxide surfactants of desired structures and derived coordinating complexes of transitional and rare earth elements are developed. Functional oligoperoxide based possibilities of the synthesis of luminescent, magnetic and other functional nanocomposites with controlled size distribution, functionality, reactivity and biocompatibility are presented. formation of polymeric, metal and metal-oxide nanoparticles with the stage of their surface irreversible modification by functional fragments capable of radical and other reactions including binding physiologically active substances. Novel nanoparticles are studied by chemical, colloidal-chemical , and rheological methods, X-ray diffraction technique, luminescent spectroscopy, transmission and scanning electronic microscopy. The availability of ditertiary peroxide fragments on nanoparticle surface causes their ability to radical grafting functional polymer chains. Functional nanoparticles developed are studied in phagocytosis, as markers of pathological cells, antimicrobial remedies and nanocarriers for targeted drug delivery.