NMR Relaxation Efficiency of Aqueous Solutions of Composite Mg x Zn y Fe3−x−y O4 Nanoparticles

Fe3O4@SiO2@Au nanoparticles for MRI-guided chemo/NIR photothermal therapy of cancer cells

“…For higher concentrations, the effect of T 2 shortening was less pronounced, which can be attributed to clustering of NPs, as their concentration in the solution increases. 49 This effect of NPs clustering was observed visually in samples with the highest concentration (Fe 3 O 4 concentrations: 0.7311 and 0.3655 mmol L À1 ), therefore the specic relaxivity r 2 was determined only for unclustered NPs. Linear regression results for R 2 relaxation rates were:…”