Charge-transport rates were calculated from Eq. ( ) at a temperature of 300 K, with values for λ taken from Ref. [ 39] (281 and 302 meV for hole and electron, respectively). For the hexagonal structure, k h and k e are calculated to be comprised between 2 × 10 9 -5 × 10 13 s -1 and 4 × 10 8 -2 × 10 13 s -1 , respectively, considering the lower and higher values obtained for the CTI. For the concave-convex structure, k h and k e values range between 2 × 10 7 -6 × 10 11 s -1 and 2 × 10 7 -2 × 10 12 s -1 , respectively, to be again considered as the lower and upper values. To put these values in the context of organic charge transport, it is useful to compare the rates on [8]CPP monolayers with those calculated for some well-known organic molecular semiconductors (e.g. pentacene and rubrene): k h and h e were calculated for a perfect array of cofacial pentacenes to be 3 × 10 14 s -1 and 1 × 10 Note also how mobility for the hexagonal structure is expected to be isotropic in all in-plane directions, which differentiates CPPs from other planar (i.e. lath-shaped) organic semiconductors such as oligoacenes. To demonstrate this effect, we also calculated the angular dependence of the mobility for both hexagonal and concaveconvex cases with equations 3 and 4. Figure shows the in-plane mobilities for holes and electrons, with maximum values of 5.6 and 1.7 cm 2 V -1 s -1 for hexagonal (or 0.06 and 0.32 cm 2 V -1 s -1 for concave-convex) configuration, respectively. A quantitative comparison with rubrene and pentacene, for which hole mobilities of 23 and 20 cm 2 V -1 s -1 are predicted employing the same methodology, suggest that hexagonal monolayers of [8]CPPs could be exploited as 2D semiconductors.