Abstract
We investigated the self-assembled structure of alkoxy- and N-alkylcarbamoyl-substituted porphyrin at the solid–liquid interface by using STM. The alkoxy porphyrin showed phase transition from face-on to edge-on orderings. The phase transition requires the close packed structure of alkoxy porphyrin. By changing the side chain to N-alkylcarbamoyl groups, persistent edge-on orderings were constructed. The edge-on structure was had the Moiré patterns by the interference to HOPG underneath, which revealed the precise intermolecular distance between porphyrins.
