LAUSR

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 λph > 630 nm, the anionic form of the two-decker phthalocyaninate [(Pc2–)Ln3+(Pc2–)]– passes into the neutral monoradical form [(Pc2–)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.