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Table 2 Averaged zeta potential values (mV) and hydrodynamic diameters (nm) of FeAC, CD, and CD-FeAC NPs in PBS buffer and serum-free RPMI media (2.0 mg/mL) at neutral pH, as determined by dynamic light scattering (DLS)

From: In-vitro cytotoxicity assessment of carbon-nanodot-conjugated Fe-aminoclay (CD-FeAC) and its bio-imaging applications

 

PBS

Serum-free RPMI media

FeAC in PBS

CD in PBS

CD-FeAC in PBS

FeAC in serum- free RPMI media

CD in serum-free RPMI media

CD-FeAC in serum- free RPMI media

Zeta potential (mV)

−4.57 ± 0.96

−9.40 ± 1.30

8.17 ± 0.62

−29.07 ± 2.03

−4.09 ± 0.46

2.29 ± 1.09

−9.18 ± 0.75

−7.22 ± 0.45

Hydrodynamic size (diameter, nm)

–

–

202 ± 59

10.5 ± 1.7

362.3 ± 365.7

337 ± 77

20.61 ± 2.59

519.4 ± 110.6

Polydispersity index (PDI)

–

–

0.39 ± 0.03

0.63 ± 0.02

0.53 ± 0.02

0.33 ± 0.11

0.59 ± 0.03

0.43 ± 0.04