The First Example of Electron Phototransfer with the Participation of Two-Decker Lanthanide Phthalocyaninate

Аннотация

The photochemical activity of the anionic form of two-decker ytterbium and lutetium pthalocyaninates (LnPc₂, Ln = Yb, Lu) is observed in the process of electron transfer to 2-methyl-1,4-naphthoquinone (MNQ). Under illumination of solutions of LnPc₂ (1 × 10^–5 mol/L) and MNQ (5 × 10^–5 mol/L) in dimethyl formamide by light with wavelength λ_ph > 630 nm, the anionic form of the two-decker phthalocyaninate [(Pc^2–)Ln³⁺(Pc^2–)]^– passes into the neutral monoradical form [(Pc^2–)Ln³⁺(Pc^–)]^0•. The photochemical redox process is accompanied by accumulation of the reduced form of MNQ. The observed effect is the first example of electron phototransfer with the participation of two-decker lanthanide phthalocyaninates.