NON AQUEOUS SOLVENTS OR MIXTURES FOR DNP NMR SPECTROSCOPY, METHOD TO PREPARE SAID SOLVENTS OR MIXTURES AND USE OF SAID SOLVENTS OR MIXTURES

摘要

Non aqueous solvents or mixtures for DNP NMR spectroscopy, method to prepare said solvents or mixtures and use of said solvents or mixtures The present invention concerns a method to determine the efficiency of a solvent to impregnate a sample material for use in a dynamic nuclear polarization (DNP) nuclear magnetic resonance (NMR) experiments, characterized in that the method comprising: - selecting a non-aqueous solvent, - providing a polarizing agent that is soluble in the non-aqueous solvent, - dissolving the polarizing agent in the non-aqueous solvent, - impregnating or dissolving the sample material with the non- aqueous solvent containing the polarizing agent, - performing a solid state DNP NMR experiment on the impregnated sample material, - determining a DNP enhancement factor of the DNP NMR experiment.