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. Author manuscript; available in PMC: 2018 Sep 1.
Published in final edited form as: Biomimetics (Basel). 2017 Sep 6;2(3):17. doi: 10.3390/biomimetics2030017

Figure 7.

Figure 7

Fluorescence, hydrodynamic diameter, and zeta potential of rhodamine post-functionalized MMNP@PEG. (a) Zeta potentials and (b) hydrodynamic diameters of rhodamine post-functionalized MMNP@PEG samples prepared in water or at pH 8.5 vs. unmodified MMNPs and MMNP@PEG. Groups not sharing symbols have significantly different values (p < 0.05). (c) Fluorescence emission spectra (λex = 500 nm) of 25 μg mL−1 samples of MMNP@PEG before and after modification with RA123 in water or at pH 8.5 followed by serial dialysis in ultrapure (UP) water for 72 h and 1× PBS for 72 h. Emission spectrum of RA123 was taken at 10 ng mL−1. (d) Fluorescence emission spectra (λex = 555 nm) of 25 μg mL−1 samples of MMNP@PEG before and after modification with RAB in water or at pH 8.5 followed by serial dialysis in UP water for 72 h and 1× PBS for 72 h. Emission spectrum of RAB was taken at 10 ng mL−1.