固态核磁共振中的超循环同核偶极去耦序列
Supercycled homonuclear dipolar decoupling sequences in solid-state NMR.
作者信息
Paul Subhradip, Thakur Rajendra Singh, Goswami Mithun, Sauerwein Andrea C, Mamone Salvatore, Concistrè Maria, Förster Hans, Levitt Malcolm H, Madhu P K
机构信息
Department of Chemical Sciences, Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai 400 005, India.
出版信息
J Magn Reson. 2009 Mar;197(1):14-9. doi: 10.1016/j.jmr.2008.11.011. Epub 2008 Nov 27.
We compare the performance of the windowed phase-modulated Lee-Goldburg (wPMLG) and the windowed decoupling using mind boggling optimisation (wDUMBO) sequences at various magic-angle spinning rates and nutation frequencies of the pulses. Additionally, we introduce a supercycled version of wDUMBO and compare its efficiency with that of the non-supercycled implementation of wDUMBO. The efficiency of the supercycled version of wPMLG, denoted wPMLG-S2, is compared with a new supercycled version of wPMLG that we notate as wPMLG-S3. The interaction between the supercycled homonuclear dipolar decoupling sequences and the sample rotation is analysed using symmetry-based selection rules.
我们比较了窗口相位调制的Lee-Goldburg（wPMLG）序列和使用令人难以置信的优化方法的窗口解耦（wDUMBO）序列在不同魔角旋转速率和脉冲的章动频率下的性能。此外，我们引入了wDUMBO的超循环版本，并将其效率与wDUMBO的非超循环实现的效率进行比较。将标记为wPMLG-S2的wPMLG超循环版本的效率与我们标记为wPMLG-S3的wPMLG新超循环版本进行比较。使用基于对称性的选择规则分析超循环同核偶极去耦序列与样品旋转之间的相互作用。
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