Dissolution of upconverting fluoride nanoparticles in aqueous suspensions†
Abstract
The chemical stability of upconverting, lanthanide-doped, fluoride nanoparticles in aqueous media, which shows great potential in bioimaging, was studied. The partial dissolution of selected nanoparticles (NaYF4, LaF3 and GdF3) co-doped with Yb3+ and Tm3+ was detected and compared with respect to their size, chemical composition and structure.