Figure 1.

Summary of amine PPs properties depending on the average RF power $P_{\text{av}}$. The left graph shows the film stability in water defined as the relative thickness change after 216 hours of immersion in water. The C2C12 cell proliferation assessed by the relative optical density (OD) is shown for the selected $P_{\text{av}}$ as the OD numbers. The numbers OD > 1.0 represent the samples that were better than the polystyrene cultivation dish used as a control. The right two graphs provide a summary of the PP compositions determined by XPS (nitrogen-to-carbon ratio and number of amine groups). More details can be found in Manakhov et al.²⁵. The amine PPs used in the present cell studies are denoted by circles. The error bars represent the standard deviations of mean.