Enhancement of 13C NMR signals in solid C60 and C70 using laser-polarized xenon

NMR signals emanating from surface nuclei of solids may be enhanced by the transfer of spin polarization from laser-polarized noble gases via SPINOE (spin polarization induced nuclear Overhauser effect). The present contribution describes experiments in which the spin polarization is transferred under magic angle spinning (MAS) from laser-polarized 129Xe to 13C, a nuclear spin with a low gyromagnetic ratio in the fullerenes C60 and C70, polycrystalline materials with a low surface area. In C70, differential enhancement of the NMR is observed for the different atomic sites in the molecule.