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Physical Properties of DNA-Au NP Conjugatesa
| system | surface coverage (pmol/cm2) |
surface potential (mV) |
|---|---|---|
| DNA-Au NP | 12 ± 1 | −32 ± 1 |
| PEG 1 | 12 ± 1 | −31 ± 1 |
| PEG 2 | 10 ± 1 | −31 ± 3 |
| PEG 3 | 6 ± 1 | −22 ± 2 |
| PEG 4 | <1 | −17 ± 2 |
Surface coverage was determined by fluorescence measurements and surface potential was determined by ζ-potential measurements.
