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. 2023 Feb 14;18:743–763. doi: 10.2147/IJN.S394377

Figure 2.

Figure 2

(A) TEM images of NRA QDs. (B) SEM image and corresponding elemental mapping images of NRA@DH Gel. (C) FT-IR spectra of pure RP and NRA@DH Gel. (D) UV−vis absorption and fluorescence spectra of NRA@DH Gel. (Ex = 610 nm; Em = 840 nm). Inset shows fluorescent image. (E) Fluorescence stability of NRA@DH Gel after one month. (F) Photographs of NRA QDs, DEX gel, and NRA@DH Gel. (G and H) Rheological properties of NRA@DH Gel at varying pH levels. (I) pH-controlled encapsulated NRA QDS release curves for NRA@DH Gel at pH 7.4, 6.5, and 5.5 over 72 h.