Table 1 Physico-chemical properties of SCS, LCS, SAS, and LAS as well as their measurements
Items of physico-chemical properties | Measurement | AgNPs | |||
|---|---|---|---|---|---|
SCS | LCS | SAS | LAS | ||
Surface chemistry | Â | Citrate | Citrate | Cysteamine | Cysteamine |
Morphology | TEM | Roughly spherical | Roughly spherical | Roughly spherical | Roughly spherical |
Actual diameter (nm) | TEM | 17.9 ± 1.8 | 77.3 ± 7.6 | 19.4 ± 1.2 | 50.5 ± 4.1 |
Hydrodynamic diameter (nm) (in water) | DLS | 25.5 ± 6.2 | 81.6 ± 19.6 | 28.4 ± 6.9 | 54.2 ± 13.0 |
Polydispersity (PDI)a (in water) | DLS | 0.315 ± 0.021 | 0.185 ± 0.011 | 0.307 ± 0.01 | 0.291 ± 0.06 |
Hydrodynamic diameter (nm) (in medium) | DLS | 193.2 ± 50.1 | 106.8 ± 26.9 | 259.9 ± 63.1 | 78.7 ± 19.4 |
Polydispersity (PDI) (in medium) | DLS | 0.179 ± 0.135 | 0.229 ± 0.022 | 0.257 ± 0.005 | 0.278 ± 0.011 |
Zeta potential (mV) (in water) | PALS | − 35.8 | − 16.7 | 17.6 | 19.4 |
Zeta potential (mV) (in medium) | PALS | − 20.1 | − 8.22 | − 19.7 | − 16.5 |
Maximum absorbance (nm) (in water) | UV–Vis | 391 | 432 | 389 | 430 |
Maximum absorbance (nm) (in medium) | UV–Vis | 403 | 440 | 403 | 431 |