C60-modified mixed (phthalocyaninato)(porphyrinato) yttrium(III) double-decker complex: Synthesis, characterization, and photophysical properties

• A novel hybrid dyad [HYIII(Pc)(Por)]-C60 was designed and synthesized.
• The steady-state and transient absorption spectra were analyzed.
• A photoinduced charge-separated state [HY(Pc)(Por)]+-(C60)− was obtained.

A novel mixed (phthalocyaninato)(porphyrinato) yttrium(III) double-decker complex with a C60 chromophore covalently linked at the porphyrin ligand by phenyl ether linkage has been designed and synthesized. The photophysical properties of this novel dyad containing the C60 and mixed (phthalocyaninato)(porphyrinato) yttrium(III) double-decker components were investigated by steady-state and transient spectroscopic methods. Comparative studies over the electronic absorption spectra document that there is no considerable electronic interaction between the C60 and mixed (phthalocyaninato)(porphyrinato) yttrium(III) double-decker components in the ground state. Time-resolved absorption spectra of this dyad reveal a photoinduced electron transfer from the {HY[Pc(α-OC4H9)8](Por)} moiety to the C60 moiety upon irradiation at 400 nm, which excites both of the components, resulting in a charge-separated state with a lifetime longer than 1 ns.

A novel mixed (phthalocyaninato)(porphyrinato) yttrium double-decker complex covalently linked with C60 chromophore at the para position of one meso-phenyl group of the porphyrin ligand by phenyl ether linkage has been designed and synthesized. A photoinduced electron transfer from the {HY[Pc(α-OC4H9)8](Por)} unit to the C60 moiety occurs upon irradiation at 400 nm, which excites both C60 and {HY[Pc(α-OC4H9)8](Por)} components, resulting in a charge-separated state with a lifetime longer than 1 ns.Figure optionsDownload as PowerPoint slide