fig10

Figure 10. DNP-enhanced ¹H → ¹⁷O RINEPT-$$ \mathrm{SR4_{1}^{2}} $$ (tt)-QCPMG spectra of unmodified MoO₃/TiO₂ with τ = (A) 1.9 and (B) 0.1 ms. Reproduced with permission from^[131]. Copyright 2020, American Chemical Society. DNP: Dynamic nuclear polarization; RINEPT: refocused insensitive nuclei enhanced by polarization transfer; QCPMG: quadrupolar Carr-Purcell Meiboom-Gill.