For the adsorption of isolated CPPs, and the corresponding self-aggregation on the surface, a graphite surface of dimensions a = 98.800 Å, b = 98.394 Å, c = 100.000 Å (40×23×1 replicas of the graphite rectangular cell mentioned above) was used. For the full-coverage studies, the graphite dimensions were chosen to minimize the mismatch between the adlayer and the graphite. Two stable adlayer structures were found and, as a consequence, two graphite surfaces were prepared with dimensions: i) a = 113.620 Å, b = 98.394 Å, c = 100.000 Å (46×23×1) for the hexagonal structure;