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. 2020 May 27;25(11):2499. doi: 10.3390/molecules25112499

Table 1.

Dimensional and chemical-physical data of PEG-coated AuNP.

Citratea HS-PEG2000 HS-PEG5000 HS-PEG10000 HS-PEG20000
rhyd (nm)b 16(1) 23(1) 54 74 93
ζ (mv) −32(2) −13(1) −5(1) −8(1) −1(1)
%w/wc 10.69(5) 21.95(6) 21.72(3) 29.41(7)
n/NPd 1805 1758 890 651

a Parent AuNP, with no PEG coating b hydrodynamic radius determined in water. c % of PEG weight in dry samples; water is adsorbed on the solid samples used for TGA measurements, the % Au is calculated by subtracting the % of PEG and % of water to 100 (see SI for TGA profiles and details); d number of polymer chains per NP.