Thakur Rajendra Singh, Kurur Narayanan D, Madhu P K
Department of Chemical Sciences, Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai 400 005, India.
Magn Reson Chem. 2008 Feb;46(2):166-9. doi: 10.1002/mrc.2153.
Recently, a sequence for heteronuclear dipolar decoupling in solid-state NMR, namely SWf-TPPM, was introduced by us. Under magic-angle spinning (MAS), the decoupling efficiency of the sequence was unaffected over a range of values for various experimental parameters such as the pulse length, pulse phase, and 1H resonance offset. We here demonstrate its use in multiple-quantum (MQ) and high-resolution (HR) MAS experiments. This sequence further improves the MQMAS spectra compared to the earlier reported decoupling sequences with improved immunity to any missets of the pulse length, pulse phase and decoupler offset. In contrast, for HRMAS, the simple CW scheme is as efficient as any of the decoupling schemes that were studied.
最近，我们引入了一种用于固态核磁共振中异核偶极去耦的序列，即SWf-TPPM。在魔角旋转（MAS）条件下，该序列的去耦效率在一系列实验参数（如脉冲长度、脉冲相位和1H共振偏移）的取值范围内不受影响。我们在此展示了其在多量子（MQ）和高分辨率（HR）MAS实验中的应用。与早期报道的去耦序列相比，该序列进一步改善了MQMAS谱，对脉冲长度、脉冲相位和解耦器偏移的任何失准具有更高的抗性。相比之下，对于HRMAS，简单的连续波（CW）方案与所研究的任何去耦方案效率相当。
