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

Figure 2.

Figure 2

(A) Fluorescence intensity of green NPs prepared with various concentrations of BODIPY-FL (from 0.1% to 2.0%). (B) Fluorescence intensity of red NPs prepared with various concentrations of Nile Red (from 0.1% to 1.3%). (C) Emission spectra of FRET NPs loaded with 1.0% D–0.2% A (black), 1.0% D–0.3% A (red), and 1.3% D–0.3% A (blue) normalized at the acceptor emission wavelength (λexcitation 488 nm). (D) Size distribution of FRET NPs with the depicted D–A loading ratios. (E) Emission spectra of green NPs loaded with 1.0% BODIPY-FL (green), red NPs loaded with 0.2% Nile Red (red), and FRET NPs coencapsulating 1.0% BODIPY-FL and 0.2% Nile Red (orange). (F) Emission spectra of intact FRET NPs dispersed in water (orange) and disassembled FRET NPs dispersed in acetonitrile (green).