魔角自旋频率为150 kHz的固态异质结多量子光谱
Solid-state heteronuclear multiple-quantum spectroscopy under a magic-angle spinning frequency of 150 kHz
摘要：
因此，我们证明，1H检测15 N-1H异质结多量子光谱可以在150 kHz的魔角旋转频率下进行。虽然15 N-1H多重量子相干性可以从旋转坐标系中绝热退磁方法产生的偶极序直接激发，但是通过1H和15 N的两个单独的化学位移演化周期获得异质多重量子相干性的化学位移演化在技术上更有利。我们还证明了通过剪切相应的异序单量子关联谱可以得到异序多量子关联谱。
英文摘要：
We hereby demonstrate that 1H detected 15N-1H heteronuclear multiple-quantum spectroscopy can be carried out at a magic angle spinning frequency of 150 kHz. While the 15N-1H multiple-quantum coherences can be directly excited from the dipolar order created by the method of adiabatic demagnetization in the rotating frame, it is technically more advantageous to acquire the chemical shift evolution of the heteronuclear multiple-quantum coherence by two separate chemical shift evolution periods for 1H and 15N. We also show that the heteronuclear multiple-quantum correlation spectrum can be obtained by shearing the corresponding heteronuclear single-quantum correlation spectrum.
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