Figure 1: Schematic illustrations of the synthesis process of UCNPs@silane and UCNPs@PtOEP/PTX@silane. | Scientific Reports

Figure 1: Schematic illustrations of the synthesis process of UCNPs@silane and UCNPs@PtOEP/PTX@silane.

From: Silane modified upconversion nanoparticles with multifunctions: imaging, therapy and hypoxia detection

Figure 1

The PTX and PtOEP molecules were encapsulated within the ultrathin coating layer (1–2 nm). After these composite NPs were internalized by tumor cells, the multifunctional NPs could emit visible light under NIR irradiation for upconversion imaging. In addition, PTX and PtOEP can play the function of therapy and oxygen sensing. The colorful dots mean different kinds of hydrophobic molecules, such as PTX and PtOEP.

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