Order-resolved sideband separation in magic-angle-spinning NMR. 31P NMR of oriented DNA fibers

Abstract We report new radiofrequency pulse schemes for deriving the orientation distribution function of chemical shift anisotropy tensors in the nuclear magnetic resonance of ordered solids. Sample spinning at the magic-angle is combined with radio frequency pulse schemesfor spinning sideband separation. We separate the sidebands associated with molecular order using only 5 radiofrequency π-pulses and avoiding a three-dimentional Fourier transformation.