High-efficiency low-power (13)C-(15)N cross polarization in MAS NMR
Biomolecular solid-state magic angle spinning (MAS) NMR spectroscopy frequently relies on selective ^(13)C-^(15)N magnetization transfers, for various kinds of correlation experiments. Introduced in 1998, spectrally induced filtering in combination with cross polarization (SPECIFIC-CP) is a selective heteronuclear magnetization transfer experiment widely used for biological applications. At MAS frequencies below 20 kHz, commonly used for ^(13)C-detected MAS NMR experiments, SPECIFIC-CP transfer...
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