Table 1.

Zeta potential and hydrodynamic size of the AuNPs in medium.

Mixed Charged Thiols (11-mercaptoundecanoic acid (MUA)/1-octanethiol (OT))	Zeta Potential (mV) (Mean ± SEM)	Hydrodynamic Size (nm) (Mean ± SEM)
0:1 (0% MUA–AuNPs)	−20.21 ± 0.48	42.12 ± 1.32
1:2 (33% MUA–AuNPs)	−19.92 ± 0.43	42.23 ± 2.12
1:1 (50% MUA–AuNPs)	−16.06 ± 0.38	43.14 ± 1.24
2:1 (67% MUA–AuNPs)	−14.54 ± 0.52	42.67 ± 1.52
1:0 (100% MUA–AuNPs)	−33.14 ± 0.42	42.45 ± 2.38
Citrate–AuNPs	−32.05 ± 1.77	41.5 ± 2.42

Error ranges represent standard error of the mean (SEM).