Encapsulation of phthalocyanine-C_{60} fullerene conjugates into metallosupramolecular subphthalocyanine capsules: a turn of the screw

Authors: IRENE SANCHEZ-MOLINA, MINE INCE, GIOVANNI BOTTARI, CHRISTIAN GEORGES CLAESSENS, MAIA VICTORIA MARTINEZ DIAZ, TOMAS TORRES

Abstract: In this communication, encapsulation studies between metallosupramolecular capsule 1, formed by 2 subphthalocyanines (SubPcs) coordinated to 3 metallic centers, and phthalocyanine (Pc)-C_{60} fullerene conjugates 2--5 have been carried out. It was shown that the encapsulation of the C_{60} moiety by the SubPc cage occurred exclusively for dyads 2--4, whereas it was not observed in the case of triad 5. The rigidity of the linker between the Pc and the fullerene unit proved to have an important impact in the complex formation. Complex formation was tested in 2 different solvents, where the importance of solvophobic effects was highlighted. The resulting multicomponent supramolecular systems represent a unique combination of photoactive moieties where covalent and supramolecular chemistry coexist.

Keywords: Phthalocyanines, subphthalocyanines, C_{60} fullerene, metallosupramolecular chemistry, host--guest complexes

Full Text: PDF