Ernst Matthias, Meier Marcel A, Tuherm Tiit, Samoson Ago, Meier Beat H
Physical Chemistry, ETH-Zürich, CH-8093 Zürich, Switzerland.
J Am Chem Soc. 2004 Apr 21;126(15):4764-5. doi: 10.1021/ja0494510.
We demonstrate that two-dimensional solid-state NMR chemical-shift correlation spectra can be recorded under low-power conditions. Except for the cross-polarization period, no rf-field amplitudes above 40 kHz are used. Such experiments require the use of fast (>50 kHz) magic-angle spinning (MAS). A comparison with the high-power version of the experiment shows no general line broadening but some changes in the polarization-transfer dynamics.
我们证明了二维固态核磁共振化学位移相关谱可以在低功率条件下记录。除了交叉极化期外，不使用高于40 kHz的射频场幅度。此类实验需要使用快速（>50 kHz）魔角旋转（MAS）。与该实验的高功率版本相比，没有普遍的谱线展宽，但极化转移动力学有一些变化。
