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首页> 外文期刊>Journal of magnetic resonance >Heteronuclear decoupling by multiple rotating frame technique
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Heteronuclear decoupling by multiple rotating frame technique

机译：多重旋转框架技术实现异核解耦

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The paper describes the multiple rotating frame technique for designing modulated rf fields, that perform broadband heteronuclear decoupling in solution NMR spectroscopy. The decoupling method presented here is understood by performing a sequence of coordinate transformations, each of which demodulates a component of the rf field to a static component, that progressively averages the chemical shift and the dipolar interaction. We show that by increasing the number of modulations in the decoupling field, the ratio of dispersion in the chemical shift to the strength of the static component of the rf field is successively reduced in the progressive frames. The known decoupling methods like continuous wave decoupling, TPPM, etc., can be viewed as special cases of this method and their performance improves by adding additional modulations in the decoupling field. The technique is also expected to find use in design of broadband excitation, inversion and mixing sequences and broadband experiments in solid state NMR.
机译：本文介绍了用于设计调制rf场的多重旋转框架技术，该技术在溶液NMR光谱中执行宽带异核去耦。通过执行一系列坐标转换，可以理解此处介绍的解耦方法，每个坐标转换将rf场的一个分量解调为静态分量，从而逐步求平均化学位移和偶极相互作用。我们表明，通过增加去耦场中的调制次数，在渐进帧中，化学位移的分散度与rf场的静态分量强度的比值将依次减小。可以将诸如连续波解耦，TPPM等的已知解耦方法视为该方法的特殊情况，并且通过在解耦字段中添加其他调制来提高其性能。预计该技术还将用于宽带激发，反演和混合序列的设计以及固态NMR中的宽带实验中。

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