Magnetism and Afterglow United: Synthesis of Novel Double Core-Shell Eu²⁺ -Doped Bifunctional Nanoparticles.

ABSTRACT: Afterglow-magnetic nanoparticles (NPs) offer enormous potential for bioimaging applications, as they can be manipulated by a magnetic field, as well as emitting light after irradiation with an excitation source, thus distinguishing themselves from fluorescent living cells. In this work, a novel double core-shell strategy is presented, uniting co-precipitation with combustion synthesis routes to combine an Fe₃ O₄ magnetic core (≈15 nm) with an afterglow SrAl₂ O₄ :Eu²⁺ ,Dy³⁺ outer coat (≈10 nm), and applying a SiO₂ protective middle layer (≈16 nm) to reduce the luminescence quenching caused by the Fe core ions. The resulting Fe₃ O₄ @SiO₂ @SrAl₂ O₄ :Eu²⁺

SUBMITTER: Terraschke H 

PROVIDER: S-EPMC7318628 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature