Dissolution dynamic nuclear polarization (DNP) has recently gained attention as a method to enhance the sensitivity of liquid NMR spectroscopy and MRI. We demonstrate dissolution of the sample hyperpolarized by DNP using photoexcited triplet electrons in 0.38 T at room temperature. The achieved polarization of 0.8% is 6100 times as high as that at thermal equilibrium under the condition. The result is an important step for DNP using photoexcited triplet electrons to become widely used in chemical and biomedical research.

中文翻译：

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使用光激发三重态电子在室温下溶解动态核极化

溶解动态核极化（DNP）作为提高液体NMR光谱学和MRI灵敏度的一种方法最近已受到关注。我们展示了在室温下使用光激发的三重态电子在0.38 T中通过DNP超极化的样品的溶解。在此条件下，达到的0.8％极化强度是热平衡时的极化强度的6100倍。对于使用光激发三重态电子的DNP广泛用于化学和生物医学研究而言，这一结果是重要的一步。