Physicochemical properties of the AuNP–PICs (means ± SD).
| Size of corea [nm] | Zeta potentialb [mV] | Surface area of core [nm2] | Number of uPIC(40:400)/particleb | |
|---|---|---|---|---|
| Sphere20-PIC | 20 ± 0.9 | −53 ± 6.7 | 1300 | 5.2 ± 0.2 |
| Sphere40-PIC | 41 ± 2.2 | −48 ± 4.8 | 5000 | 12 ± 0.1 |
| Rod30-PIC | 28 ± 3.2 × 7.9 ± 0.9 | −47 ± 5.3 | 770 | 20 ± 1.1 |
| Rod40-PIC | 41 ± 4.8 × 12 ± 1.6 | −49 ± 2.1 | 1800 | 10 ± 1.0 |
a
Nanoparticle sizes were determined from at least 100 particles in TEM images.
b
Zeta potentials of the AuNP–PICs and the number of immobilized uPIC(40:400) molecules were determined from at least 3 independent experiments.