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. 2019 Feb 5;2(3):1131–1140. doi: 10.1021/acsabm.8b00754

Figure 4.

Figure 4

Normalized fluorescence emission spectra of FRET NPs incubated at pH 5.8 (A) and pH 7.4 (C) at 0.5 h (black), 4 h (red), day 1 (blue), day 3 (magenta), and day 7 (green). Excitation wavelength: 488 nm. FRET ratio plot for FRET NPs (orange) and green NPs (green) dispersed in PBS buffer with pH 5.8 (B) and pH 7.4 (D).