Perfluorotributylamine as a probe molecule for distinguishing internal and external acidic sites in zeolites by high-resolution 1H MAS NMR spectroscopy
Using a 1H-based constant-time uniform-sign cross-peak (CTUC) COSY-type MAS NMR experiment, we have identified a triglyceride layer as the main component of small lipid droplets embedded on the surface of collagen fibrils in compact bone.