Fig. 1
A Representative TEM images and elemental mappings of O, S, Si and Fe elements for Fe3O4@MONs. B Linear elemental scanning of Fe3O4@MONs. C Field-dependent magnetization curves of Fe3O4, Fe3O4@MONs-PEG, and LND@Fe3O4@MONs-PEG at room temperature. D Zeta potential of Fe3O4, Fe3O4@MONs, Fe3O4@MONs-PEG and LND@Fe3O4@MONs-PEG. E Hydrodynamic diameter distributions and corresponding PDI of LND@ Fe3O4@MONs-PEG dispersed in PBS (pH = 7.4) during 14 days. F Hydrodynamic diameter distributions and corresponding PDI of Fe3O4, Fe3O4@MONs, Fe3O4@MONs-PEG and LND@Fe3O4@MONs-PEG dispersed in PBS (pH = 7.4). Data are shown mean ± SD, n = 5