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Table 4 Diameter (ϕ), radius (r), density (ρ), volume of single QD molecules (VQD), and the number of QD molecules (NQD)

From: Quantum dots as targeted doxorubicin drug delivery nanosystems in human lung cancer cells

in 1 g
QD–MUA 11.5 5.7 4.51 7.75·10–19 2.86·1017
QD–Cys 14.0 7.0 2.63 6.23·10–19 6.10·1017
QD–LA 18.8 9.4 3.60 3.48·10–18 7.99·1016
  1. ϕ QD nanoparticle diameter, r QD nanoparticle radius, ρ:QD density determined on the basis of the density of its components, VQD volume of a single QD molecule (\({\text{V}}_{QD} = \frac{4}{3}{\pi r}^{3}\)), NQD number of QD molecules in 1 g, QD Ag–In–Zn–S nanocrystals modified with: 11-mercaptoundecanoic acid (MUA), Cys L-cysteine, LA lipoic acid