Carbon-13 NMR Relaxation Study of the Internal Dynamics in Cyclodextrins in Isotropic Solution

摘要

~(13)C nuclear spin relaxation processes in seven cyclodextrins (from six-membered a to twelve-membered η) were investigated in ~2H2O solution at multiple magnetic fields. Detailed analysis of ~(13)C longitudinal relaxation in laboratory and rotating frames and ~(13)C{~1H} nuclear Overhauser enhancement in these molecules yielded their rotational diffusion tensors and a semiquantitative picture of their internal dynamics.