Spectral editing experiment of solid state 13C NMR spectra under dynamic nuclear polarization enhancement

13C NMR is a widely used NMR technique. But for some samples, such as polymerand biological macromolecule, it is very difficult to assign their 13C spectra sinee the peaksof these spectra are often seriously overlapping. In solution, a number of techniques areavailable fbr simplifying the complex spectra, such as ’distortionless enhaneement by