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

Figure 1.

Figure 1

(A) Schematic illustration for the preparation of PLGA NPs encapsulating only donor (green NPs), only acceptor (red NPs), and coencapsulating donor and acceptor dyes (FRET NPs). (B) A representative atomic force microscopy height image of FRET NPs coencapsulating 1% donor and 0.2% acceptor (w/w) dyes. Scan size: 750 nm × 750 nm. Scale bar: Z-axis. (C) Normalized excitation (dashed curves) and emission (solid curves) spectra of BODIPY-FL (green) and Nile Red (red) donor–acceptor pair.