A Simple Method Analyzing NMR Line Shape of Mobile Probes in Disordered Solids
Molecules which form rotor phases in the crystalline state can be used as dynamic probes to study glassy systems. The characteristic rotational motion persist also in the glassy state. In contrast to crystals motional non-uniformities appear which are a result of a distribution of microenvironments. The structural disorder in such systems is transformed to a distribution of motional correlation times G(lnτ).