Additionally, the stacked conformation has been corroborated for the corrole adsorption onto metallic surfaces such as Au , Ag , and Pt(111) . Remarkably, the noncovalent adsorption of corroles and corrolato onto Ag displayed adsorption energies in the range of 2.8 -4.7 eV . Furthermore, the π-electron conjugation between radical corroles and the surface increases the stabilization due to aromatic effects . Significant correlations were found between Eads, |ΔEINT|, and the number of carbon atoms in each copper corrole (Fig. ). The adsorption energy per carbon atom (Eads/C) displayed an average value of ~90 meV/atom, indicating that more substantial stabilization will be achieved for larger R substituents. For instance, the lower stabilization is obtained for the C1-G hybrid, while the more considerable stabilization for the C7-G hybrid. Moreover, ΔEPREP represents the energy penalty due to the deformation of graphene and copper corroles during the adsorption process. Thus, higher deformation is observed in the hybrids with aromatic substituents. This observation can be related to the steric effects in the aromatic R substituents, compared to the non-aromatic fluoroalkyl substituents, where the latter present a lower rotational barrier (similar to alkyl groups) than π-conjugated groups. For instance, the vinyl group rotation in C7-G suffers steric impediment between phenyl hydrogen atoms and corrole outer hydrogen atoms, while the C=C double bond cannot rotate freely. Thus, the preparation energy involved in the deformation increases for the aromatic substituents during the stacking process. As an illustration of the structural changes, the torsion angles reflect the increase of planarity of the corrole cores, which can be observed by the decrease of α, β, γ, δ, and ψ angles (Table ). Thus, the increase of planarity is due to electronic interactions with the graphene surface, similarly to the study of copper corroles adsorbed onto Au surface and for non-metallated corroles adsorbed onto Ag surface . On the other hand, the charge transfer (QCT) flows from graphene to the copper corroles, where the higher transference occurs for corroles with non-aromatic fluoroalkyl substituents (C2-G, C3-G, and C4-G) due to a strong electron-withdrawing effect. The highest electron transfer reaches 0.8 |e| (copper corroles gain negative charge), indicating that the graphene behaves as an electron reservoir. Conversely, the C1-G, C5-G, C6-G, and C7-G hybrids showed almost neglectable charge transfer (QCT~0|e|). In this sense, the electronwithdrawing effect of non-aromatic fluoroalkyl substituents supports the charge movement from graphene; nonetheless, the charge transfer is not the dominant influence on the stabilization mechanism of C-G hybrids since no correlation between QCT and Eads is observed (Table ).