Upconversion nanoparticles (UCNPs) exhibit intriguing luminescent properties, rendering them valuable assets in diverse fields such as bioimaging, sensing, and therapeutics. Nevertheless, the potential toxicological impacts of UCNPs necessitate thorough investigation to ensure their safe application. This review aims to provide a detailed analysis

In this study, we describe a novel strategy for the synthesis and characterization of single-walled nanotubes (SWCNTs) covalently attached with iron oxide nanoparticles (Fe3O4|Fe2O3|FeO). The preparation process involves a two-step approach, first immobilizing SWCNTs onto a compatible substrate and then depositing Fe3O4 nanoparticles via a hydrothe