Spectral properties of supramolecular systems based on cobalt(II)/manganese(III) phthalocyanine and fullero[60]pyrrolidines with PET

The supramolecular systems of the type “donor – π-electron bridge – acceptor” were obtained by self-assembly via coordination interaction in the (octakis-3,5-di-tert-butylphenoxy)phthalocyaninato)cobalt(II)/(octakis-3,5-di-tert-butylphenoxy)phthalocyaninato)manganese(III) acetate - fullero[60]pyrrolidines systems, in which the metal ion with an unsaturated d-shell plays the role of a π-electron bridge. The chemical structure of supramolecules (the metallophthalocyanine – pyridyl/imidazole substituted fullero[60]pyrrolidine dyads) was established by UV, visible, IR, 1H NMR spectroscopy/mass spectrometry and confirmed by a computing; key spectral parameters were obtained. Quantum-chemical calculations (B3LYP*+D3BJ/6-31G) for the studied dyads in the ground and excited states were performed for detecting photoinduced electron transfer (PET) in them. The dependence of spectral properties on chemical structure was revealed. The results are relevant for further development of various photovoltaic cells.