Table 2.
Dimensional and chemical-physical data of AuNP coated with charged polymers.
| AuNP@HS-PEGCOO(−) | AuNP@HS-PEGCOO(−)/PAH(+) | AuNP@HS-PEGCOO(−)/PAH(+)/PSS(−) | |
|---|---|---|---|
| rhyd(nm)a | 58(2) | 178(8) | 197(6) |
| ζ (mv) | −22(2) | +36(2) | −27(3) |
| %w/wb | 12.27(4) Au: 86.61(4) |
18.17(3) Au: 76.73(3) |
20.27(4) Au: 74.46(4) |
| Au concc | 1.07 × 10−3 M (0.211 mg/mL) | 7.88 × 10− 4M (0.155 mg/mL) |
9.38 × 10−4M (0.185 mg/mL) |
| λmax(nm)d | 524 | 534 | 526 |
a Hydrodynamic radius determined in water. b % of organic material and % of gold in the dry products, determined by TGA; water is adsorbed on the solid samples, the % Au is calculated by subtracting the % of organic matter and % of water to 100; c Au concentration (by ICP-OES) in the 10-fold preconcentrated aqueous solutions, before ink formation; d maximum of absorption measured in the ink solvent mixture.