Magnetic and Fluorescent Hybrid Silica Nanoparticles Based on the Co- encapsulation of γ-Fe_2O_3 Nanocristals and Mo_6Br_(14)~(2-) Luminescent Nanosized Clusters by Water-in-oil Microemulsion

摘要

The design, synthesis and characterization of magnetic-luminescent nanoparticles is now more and more studied since the last decade. However, optimizing the design of such materials requires a deep understanding of their physico-chemical properties. In this paper are reported extended investigations on luminescent and magnetic [Mo_6Br_(14)-γ-Fe_2O_3]@SiO_2 nanoparticles prepared by a colloid-water-in-oil microemulsion technique. The Cs_2[Mo_6Br_(14)] cluster compound is used as red-NIR phosphor and is prepared by solid state chemistry. We bring here new insights into the structure of such Nps and its interplay with their optical or magnetic properties.