Effect of Functionalized Carbon Nanotubes and their Citric Acid Polymerization on Mesenchymal Stem Cells In Vitro

Figure 1

Schematic representation of the three steps for the nanotube synthesis (a), acid functionalization (b), and PCA polymerization (c), as described in the methodology. The bottom panels represent a pristine MWNT and a pristine CNx, with green spheres representing the nitrogen dopants. Nanotubes are functionalized, which causes some alteration in their external layer and finally polymerized, covered by a PCA layer.