Table 1.
Theoretically calculated and by means of X-ray photoelectron spectroscopy (XPS) experimentally determined atomic concentrations of oxygen (O), carbon (C), and nitrogen (N) of the Alg/peptide nanoparticle coatings (each 1 mg/mL in MilliQ, for Alg/PLL volume ratio 4:1 and for Alg/NITEGE volume ratio 1:1). The content of hydrogen was not considered in the calculations. The carbon/nitrogen ratio (C/N ratio) is reported in addition.
| Alg/PLL | Alg/NITEGE | |||
|---|---|---|---|---|
| Theoretically | Experimentally | Theoretically | Experimentally | |
| Oxygen (O) | 33% | 27% | 28% | 25% |
| Carbon (C) | 47% | 63% | 53% | 61% |
| Nitrogen (N) | 5% | 9% | 12% | 12% |
| C/N-ratio | 9.4 | 7 | 4.4 | 5.1 |