Dual-Modality Imaging Probes with High Magnetic Relaxivity and Near-Infrared Fluorescence Based Highly Aminated Mesoporous Silica Nanoparticles

Figure 2

(a) and (b) TEM images of the highly aminated MSNs prepared by CTAB-directed sol-gel processes by using TEOS and APTES as coprecursors. (c) The particle size distribution of Gd/NIR-MSNs by counting about 100 particles on TEM images. (d) Nitrogen sorption isotherms and pore size distribution curve of the MSNs-NH₂. (e) The UV-vis absorption spectrum of the Gd/NIR-MSNs. (f) EDX spectrum of the Gd/NIR-MSNs.

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