Gold molarity (mM) | Peak wavelength (nm) | Absorbance at SPR peak | Absorbance at the lowest peak | Absorbance ratio | Theoretical particle diameter (nm) | Experimental particle diameter (nm) | Sigma – Aldrich values |
0.1 | 524 | 0.1271 | 0.0710 | 1.7901 | 20 - 25 | - | 20 |
0.15 | 519 | 0.8278 | 0.5105 | 1.6216 | 14 - 16 | 10 | 10 - 15 |
0.2 | 522 | 1.1992 | 0.6982 | 1.7176 | 18 - 20 | - | 15 - 20 |
0.25 | 519 | 1.1373 | 0.6969 | 1.6319 | 14 - 16 | 11 | 10 |
0.3 | 520 | 1.974 | 1.2493 | 1.5801 | 12 - 14 | - | 15 |