A Solid-State 15N CPMAS NMR Study of Dye Tautomerism in Glassy Polystyrene: Site Dependence of Double Minimum Potentials and Their Motional Averaging
We describe matrix effects on the high-resolution solid-state NMR line shapes of bistable molecules that are subject to rapid exchange between two isomers.Matrix effects are modeled in terms of a static superposition of different molecular environments or