Fig. 4. (Up) ¹H MAS NMR spectra for Cu_0.1-PCN-223 and 1.0C₆₀@Cu_0.1-PCN-223 at 300 K. (Down) ¹³C MAS NMR spectrum of 1.0C₆₀@Cu_0.1-PCN-223 at 300 K. The signals from dimethylformamide (DMF), diethylformamide (DEF), H₂TCPP linker and fullerene (C₆₀) are indicated on the spectra.