Solid-State 13C NMR Imaging with Magic-Angle Spinning

Abstract By synchronizing a rotating magnetic-field gradient with the rotation of a sample undergoing magic-angle spinning (MAS), solid-state 13 C NMR imaging has been carried out. Two-dimensional spatial-spatial 13 C NMR images have been demonstrated in natural abundance on organic solids and a rigid polymer with and without chemical-shift selectivity. A 2D spatial-spectral solid-state 13 C NMR image is also presented with MAS-enhanced spectral resolution in the chemical-shift dimension. It was found that the dependence of the 13 C Signal intensity on 1 H frequency offsets in 1 H decoupling is one of the major technical problems that must be minimized in order to perform useful solid-state 13 C NMR imaging.