Issue Date: May 8, 2017
Boosting NMR sensitivity
Poor sensitivity is one of the drawbacks of nuclear magnetic resonance spectroscopy. A method called dynamic nuclear polarization (DNP) can improve the situation, particularly for solid-state NMR, by transferring spin polarization from unpaired electrons on paramagnetic agents to the nuclei of the molecules being analyzed. This aligns the nuclei and thus boosts the NMR signal. But the electron spins are such strong magnets that they interfere with the magnetization they just induced on the nuclei, . . .
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