We show here that the Electronic Mixing-Mediated Annihilation (EMMA) method, previously reported for the suppression of background signals in solid-state NMR spectra, can be successfully applied to remove the solvent signals observed in the case of NMR spectra obtained with dynamic nuclear polarization (DNP). The methodology presented here is applied to two standard sample-preparation methods for DNP, namely glass forming and incipient wetness impregnation. It is demonstrated that the EMMA method is complementary to the different methods for solvent suppression based on relaxation filters, and that it can be used to preserve the quantitative information that might be present in the pristine spectra.

中文翻译：

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使用电子混合介导的湮灭 (EMMA) 在固态 DNP NMR 中抑制溶剂

我们在这里展示了之前报道的用于抑制固态核磁共振谱中背景信号的电子混合介导湮灭 (EMMA) 方法，可以成功地应用于去除在动态核磁共振谱获得的核磁共振谱中观察到的溶剂信号。极化（DNP）。这里介绍的方法适用于 DNP 的两种标准样品制备方法，即玻璃成型和初湿浸渍。证明 EMMA 方法是对基于弛豫滤波器的不同溶剂抑制方法的补充，并且它可用于保留原始光谱中可能存在的定量信息。