Spin-(1)/(2) and beyond: A perspective in solid state NMR spectroscopy

Novel applications of solid state nuclear magnetic resonance (NMR) to the s tudy of small molecules, synthetic polymers, biological systems, and inorga nic materials continue at an accelerated rate, instrumental to this uninter rupted expansion has been an improved understanding of the chemical physics underlying NMR. Such deeper understanding has led to novel forms of contro lling the various components that make up the spin interactions, which have in turn redefined the analytical capabilities of solid state NMR measureme nts. This review presents a perspective on the basic phenomena and manipula tions that have made this progress possible and describes the new opportuni ties and challenges that are being opened in the realms of spin-1/2 and qua drupole nuclei spectroscopies.