Figure 2 | Scientific Reports

Figure 2

From: Assessing the protective effects of different surface coatings on NaYF4:Yb3+, Er3+ upconverting nanoparticles in buffer and DMEM

Figure 2

(A) Mole fractions of Y3+ released from UCNP with different surface ligands determined for two core sizes (blue: 20 nm, orange: 30 nm) after 72 h of aging in water at room temperature. (B) Mole fractions of F− released from UCNP of different particle size and surface functionalizations determined for two different initial UCNP concentrations (green: 5 mg/L, red: 50 mg/L). The samples were aged in water at room temperature for 72 h.

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