Dynamic nuclear polarization NMR spectroscopy of microcrystalline solids.

  title={Dynamic nuclear polarization NMR spectroscopy of microcrystalline solids.},
  author={Aaron J Rossini and Alexandre Zagdoun and Franziska Simone Hegner and Martin Schwarzw{\"a}lder and David Gajan and Christophe Cop{\'e}ret and Anne Lesage and Lyndon Emsley},
  journal={Journal of the American Chemical Society},
  volume={134 40},
Dynamic nuclear polarization (DNP) solid-state NMR has been applied to powdered microcrystalline solids to obtain sensitivity enhancements on the order of 100. Glucose, sulfathiazole, and paracetamol were impregnated with bis-nitroxide biradical (bis-cyclohexyl-TEMPO-bisketal, bCTbK) solutions of organic solvents. The organic solvents were carefully chosen to be nonsolvents for the compounds, so that DNP-enhanced solid-state NMR spectra of the unaltered solids could be acquired. A theoretical… CONTINUE READING
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