200 MHz DNP NMR spectroscopy with a 131 GHz gyrotron for the analysis of polymer surface

Abstract

Dynamic nuclear polarization (DNP) with a 131.5 GHz gyrotron (Gyrotron FU CW IV) has achieved enhancement factor of around 30 by using stable mono-radical 4-amino-TEMPO for 200 MHz high-resolution solid-state NMR spectroscopy for the analysis of polymer surface. Dependencies of the enhancement factor on irradiation time of the gyrotron output, the power of… (More)

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