Fig. 3: Time-resolved EPR measurements of DAT in D-MIL-53.

a Time-resolved EPR spectra at 0.1–0.5 µs for empty (D-MIL-53⊃DAT) and guest-filled (D-MIL-53⊃[DAT + guest]) samples for each guest shown in Fig. 1 at room temperature (black). The simulated EPR spectra are shown as red lines. b Decays of the EPR peaks at higher and lower magnetic fields after pulsed photoexcitation at 532 nm for empty (D-MIL-53⊃DAT) and guest-filled (D-MIL-53⊃[DAT + guest]) samples at room temperature. Decay curves were fitted by a single exponential function, and the fitting results are shown as red curves.