Structure and molecular motion of poly(ethylene oxide) in the solid state as studied by variable-temperature high-resolution solid-state 13C NMR

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High-resolution 13C NMR spectra of poly(ethylene oxide) in the solid state were measured between −105.5°C and room temperature by the variable temperature 13C cross polarization-magic angle spinning (CP-MAS) and pulse saturation transfer-magic angle spinning (PST-MAS) techniques. Based on these results, the temperature changes of the isotropic 13C chemical shift and the principal values of the 13C chemical shift tensor were used to elucidate dynamic and conformational aspects of poly(ethylene oxide) in the solid state.