Investigation of molecular motions by Lee-Goldburg cross-polarization NMR spectroscopy

The amplitude and geometry of segmental motions in bimolecular and polymeric solids is investigated by the use of Lee-Goldburg cross-polarization (LG-CP) NMR under fast magic-angle spinning. The LG-CP evolution yields simple and well resolved splitting in the frequency domain, whose line shape could be analyzed to extract semiquantitative information on the geometry of motion.