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UV-visible absorption spectra of human serum albumin (a), fibrinogen (b), transferrin (c) with different concentrations (0–2.0 μg/mL) of SiQD-De/F127 nanoparticles and each proteins concentration are 1 µM. Optical absorbance increases continuously with the incremental addition of the nanoparticles. Insets show Benesi–Hildebrand plots for proteins as a function of nanoparticle concentration.
