Figure 3.

Representative 1D ¹³C solid-state NMR spectra illustrating the transfer efficiencies of adiabatic DCP, ^OCDCP, and EXPORT in comparison to ¹³C CP-MAS spectra (pulse sequences are shown in Figure 2). The percentages are the same as in Table 2. Spectra were acquired at 700 MHz for ¹H and with ν_r=14 kHz. The ¹³C CP-MAS spectra were optimized for either Co or C_α.