Measurement of the local 1H spin-diffusion coefficient in polymers.

  title={Measurement of the local 1H spin-diffusion coefficient in polymers.},
  author={Qi Chen and Klaus Schmidt-Rohr},
  journal={Solid state nuclear magnetic resonance},
  volume={29 1-3},
Proton spin diffusion is widely used to determine domain sizes in heterogeneous organic solids. For an accurate analysis, spin diffusion coefficients are required. However, in most cases they are not directly measured, but instead derived from model systems. The effects of magic-angle spinning (MAS), mobility, or spin-lock fields on spin-diffusion coefficients have also been difficult to quantify. In this work, direct measurement of local (1)H spin-diffusion coefficients in any rigid polymer is… CONTINUE READING