Tata Institute of Fundamental Research Hyderabad, Survey No. 36/P, Gopanapally Village, Serilingampally Mandal, Ranga Reddy District, Hyderabad, 500 107, India.
Tata Institute of Fundamental Research Hyderabad, Survey No. 36/P, Gopanapally Village, Serilingampally Mandal, Ranga Reddy District, Hyderabad, 500 107, India; Department of Chemical Sciences, Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai, 400 005, India.
Solid State Nucl Magn Reson. 2018 Apr-May;90:7-12. doi: 10.1016/j.ssnmr.2018.01.001. Epub 2018 Jan 20.
We show here an effective way of implementing simultaneously homonuclear and heteronuclear dipolar decoupling in magic-angle spinning (MAS) solid-state NMR. Whilst the homonuclear spin decoupling is applied on the H channel, heteronuclear spin decoupling is applied on the C channel. The H spins are observed in a windowed fashion in this case. The resultant H spectrum has higher resolution due to the attenuation of broadening arising from both homonuclear H-H and heteronuclear H-C interactions, with the latter normally leading to additional line broadening in C labelled samples. The experiments are performed at MAS frequencies of ca. 60 kHz.
我们在这里展示了一种在魔角旋转（MAS）固态 NMR 中同时实现同核和异核偶极去耦的有效方法。在这种情况下，同核自旋去耦应用于 H 通道，而异核自旋去耦应用于 C 通道。在这种情况下，H 自旋以窗口化的方式进行观测。由于同核 H-H 和异核 H-C 相互作用引起的展宽衰减，所得 H 谱具有更高的分辨率，后者通常会导致 C 标记样品的额外线宽增加。实验在 MAS 频率约为 60 kHz 下进行。
