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Hydrodynamic size (Dh), polydispersity index (PDI) and zeta potential of gold nanoparticles (AuNPs) and successively functionalized AuNPs, curcumin–gold polyvinylpyrrolidone nanoparticles (CurAu-PVP NPs) and folic acid–curcumin gold–polyvinylpyrrolidone nanoparticles (FA–CurAu-PVP NPs) at physiological pH
| Sr. no. | Formulation | Dh (nm) | PDI | Zeta potential (mV) |
|---|---|---|---|---|
| 1 | AuNP | 36.85 | 0.296 | −7.47 |
| 2 | AuPvP | 62.50 | 0.338 | −9.91 |
| 3 | CurAu-PVP NP | 72.56 | 0.582 | −10 |
| 4 | FA–CurAu-PVP NC | 358.7 | 0.6 | −12.5 |
