Table 2.
Effect of F127 concentration on the characteristics of the GNP 1.
| F127 Concentration (% w/w) |
DLS (Reaction Mixture) | DLS (Purified Particles) | Morphology by TEM | ||||
|---|---|---|---|---|---|---|---|
| Deff (nm) | PDI | ζ-Potential (mV) | Deff (nm) | PDI | ζ-Potential (mV) | ||
| 1.0 | 121 ± 1 | 0.28 ± 0.01 | −12.13 ± 0.30 | 80 ± 1 | 0.29± 0.01 | −25.57 ± 0.40 | Multi-sized spheres, rods, hexagons |
| 2.0 | 91 ± 1 | 0.43 ± 0.01 | −6.45 ± 0.30 | 54 ± 1 | 0.42 ± 0.03 | −30.20 ± 0.66 | Multi-sized spheres, rods, hexagons, triangles |
| 3.15 | 101 ± 2 | 0.28 ± 0.01 | −5.52 ± 0.02 | 62 ± 1 | 0.29 ± 0.003 | −28.20 ± 0.20 | Spheres, triangles, rods |
| 5.0 | 133 ± 2 | 0.22 ± 0.01 | −4.04 ± 0.20 | 63 ± 1 | 0.19 ± 0.02 | −32.23 ± 1.85 | Spheres, triangles |
| 6.3 | 153 ± 12 | 0.23 ± 0.01 | −3.84 ± 0.06 | 58 ± 1 | 0.17 ± 0.01 | −36.50 ± 0.38 | Spheres, triangles |
| 7.5 | 227 ± 6 | 0.17 ± 0.02 | −3.76 ± 0.20 | 75 ± 1 | 0.15 ± 0.01 | −41.80 ± 0.56 | Spheres |
| 10.0 | 305 ± 3 | 0.11 ± 0.02 | −2.83 ± 0.30 | 86 ± 1 | 0.09 ± 0.01 | −45.30 ± 0.15 | Uniform spheres |
1 Particles were synthesized by mixing equal volumes of F127 and HAuCl4 solutions (final concentrations 1–10% w/w, pH 6.5, and 0.25 mM respectively) followed by incubation of the mixture for 2 h at 55 °C. Particles were purified as described in Table 1. The purified nanoparticles were restored to original volume with distilled water (particles concentration remained the same before and after purification).