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Table 1 Physicochemical properties of HAuNS and PEG-HAuNS

From: Pharmacokinetics, clearance, and biosafety of polyethylene glycol-coated hollow gold nanospheres

  HAuNS PEG-HAuNS
Concentration (mg/mL) 2.5 × 10−3 2.5 × 10−3
Concentration (particles/mL) 6.25 × 109 6.25 × 109
Mean diametera (nm) 43.6 ± 0.4 62.7 ± 0.7
Polydispersitya 0.006 ± 0.001 0.068 ± 0.005
Zeta potential (mA) −23 ± 0.8 −15 ± 0.6
Plasma resonance peak (nm) 802 801
Optical densityb 0.112 0.110
  1. aData are presented as mean ± standard deviation (n = 3), measured by dynamic light scattering. bOptical density measured at 800 nm.