Annual Reports on NMR Spectroscopy, Volume 91 provides a thorough and in-depth accounting of progress in nuclear magnetic resonance (NMR) spectroscopy and its many applications for chemists and physicists to study the structure and dynamics of molecules. This updated release in the series focuses on topics surrounding NMR relaxation in dendrimers, MRI studies of spatial distribution of charge carriers, and MRI studies of plastic crystals, amongst other timely topics. As no other technique has gained as much significance as NMR spectroscopy in recent years, this series, for both specialists and non-specialists, is an ideal resource for the latest information in the field.