电子去偶 MAS DNP 与 N@C。
Electron-decoupled MAS DNP with N@C.
机构信息
Laboratory of Physical Chemistry, ETH Zürich, Zürich 8093, Switzerland.
Washington University in St. Louis, St. Louis 63130, MO, USA.
出版信息
Phys Chem Chem Phys. 2023 Feb 15;25(7):5343-5347. doi: 10.1039/d2cp04516h.
Abstract
Frequency-chirped microwaves decouple electron- and C-spins in magic-angle spinning N@C:C powder, improving DNP-enhanced C NMR signal intensity by 12% for 7 s polarization, and 5% for 30 s polarization. This electron decoupling demonstration is a step toward utilizing N@C as a controllable electron-spin source for magic-angle spinning magnetic resonance experiments.
摘要
啁啾微波使魔角旋转 N@C:C 粉末中的电子和 C 自旋解耦，在 7 s 极化时将 DNP 增强的 C NMR 信号强度提高了 12%，在 30 s 极化时提高了 5%。该电子去耦演示是将 N@C 用作魔角旋转磁共振实验可控电子自旋源的重要一步。
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