New two in one magnetic fluorescent nanocomposites

摘要

Thus we have prepared new magnetic-fluorescent nanocomposites using TCPP and magnetite nanocrystals. We have found that the success of this process depends on the nature of the particles (crystalline or amorphous) used. The interaction of magnetite nanocrystals with TCPP gave stable core-shell composites which display fluorescent properties. However, in the case of amorphous particles the reaction with TCPP resulted in the etching of the nanoparticles and the formation of non-luminescent nanocomposites. New nanocrystalline magnetite-porphyrin composites may be potentially used in biomedical research as assays and magnetic and fluorescent biolabels.