Experimental study demonstrates triplet dynamic nuclear polarization in crystalline ice using a water-soluble agent, highlighting a path toward hyperpolarizing water at moderate temperatures.
Triplet dynamic nuclear polarization (triplet-DNP) allows hyperpolarization at a moderate temperature. While the triplet-DNP of water is strongly desired, water-soluble triplet polarizing agents have not yet been reported. Herein, the first example of triplet-DNP of crystalline ice is demonstrated by molecularly dispersing a novel water-soluble polarizing agent into ice.
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Kouno et al. (2020) studied this question.
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