Self-organization of phthalocyanines has been programmed on a porphyrin template. Two phthalocyanines with four peripheral crown ether units are stacked cofacially on a porphyrin bearing four alkylammonium chains, in accordance with the number of ammonium groups on the side chain, through fourfold rotaxane formation. Significant electronic interaction is observed between the closely stacked
... [Show full abstract] phthalocyanines. More information can be found in the Full Paper by K. Tanaka, et al. on page 12371 ff.