“ADRF-CPMAS NMR Experiment Surpasses Optimized Hartmann-Hahn Cross Polarization for Low-γ, Insensitive Nuclei Enhancement in Solid-State NMR”

https://pubmed.ncbi.nlm.nih.gov/38095202

The study finds that cross polarization from dipolar-order under magic angle spinning (ADRF-CPMAS NMR experiment) can, in some instances, exceed the efficiency of an optimized Hartmann-Hahn cross polarization (HH-CPMAS) transfer for enhancing the signals from low-γ, insensitive (I) nuclei in solid-state nuclear magnetic resonance.