Fig. 1

Preparation and characterization of IONPs-PAA-PEG-MAN and Rif@IONPs- PAA-PEG- MAN. A Schemes for the preparation of IONPs-PAA-PEG-MAN and Rif@IONPs-PAA-PEG-MAN. B FTIR analysis of mannose and rifampicin. C FTIR analysis of IONPs-PAA, IONPs-PAA-PEG, IONPs-PAA-PEG-MAN and Rif@IONPs-PAA- PEG-MAN. D UV–Vis analysis of rifampicin, IONPs-PAA, IONPs-PAA-PEG, IONPs- PAA-PEG-MAN and Rif@IONPs-PAA-PEG-MAN. Size distribution of (E) IONPs- PAA-PEG-MAN and F Rif@IONPs-PAA-PEG-MAN analyzed by DLS. TEM image of (G) IONPs-PAA-PEG-MAN and H Rif@IONPs-PAA-PEG-MAN, scale bar: 100 nm. High-resolution TEM image of (I) IONPs-PAA-PEG-MAN and (J) Rif@IONPs-PAA-PEG- MAN, scale bar: 5 nm. K X-ray photoelectron spectroscopy (XPS) analysis of IONPs-PAA- PEG-MAN and Rif@IONPs-PAA-PEG-MAN