Fig. 4. Electronic properties of Dy3C2@Ih(7)-C80. (a) UV-vis-NIR absorption spectra of Dy3C2@Ih(7)-C80 and Sc3C2@Ih(7)-C80 dissolved in toluene. Inset: the photograph of Dy3C2@Ih(7)-C80 solution in toluene. (b) Cyclic voltammogram (top) and differential pulse voltammogram (bottom) of Dy3C2@Ih(7)-C80 measured in o-DCB solution with TBAPF6 as the supporting electrolyte (scan rate: 100 mV s−1); ferrocene Fe(Cp)2 was added as the internal standard. Each redox step of Dy3C2@C80 is marked with a solid dot; the asterisk denotes the oxidation peak of ferrocene. Variation of the formal charge of the Dy3 fragment in different potential ranges is indicated.
