Two-Pulse Phase Modulation Based Decoupling Schemes for Removing Heteronuclear Spin Interactions in the NMR Spectroscopy of Isotropic Systems: An Analysis Using Experiments and Numerical Simulations | Zendy

Cyril Augustine | Zendy

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Two-Pulse Phase Modulation Based Decoupling Schemes for Removing Heteronuclear Spin Interactions in the NMR Spectroscopy of Isotropic Systems: An Analysis Using Experiments and Numerical Simulations

Author(s) -

Cyril Augustine

Publication year - 2014

Publication title -

international journal of spectroscopy

Language(s) - English

Resource type - Journals

eISSN - 1687-9457

pISSN - 1687-9449

DOI - 10.1155/2014/641473

Subject(s) - heteronuclear molecule , decoupling (probability) , isotropy , anisotropy , nuclear magnetic resonance , algorithm , physics , materials science , nuclear magnetic resonance spectroscopy , computer science , optics , control engineering , engineering

Heteronuclear spin interactions in solids and anisotropic liquids can be removed by phase modulated decoupling sequences with frequency sweep, such as SWf-TPPM and its variants. The performance of these sequences in isotropic spin systems with regard to the experimental parameters, phase angle, and decoupler offset is presented here. A comparison is made with other commonly used heteronuclear decoupling schemes in liquids, namely, WALTZ-16, GARP, and MLEV. Also, the trajectories of nuclear magnetization vector of abundant nuclei in a simple spin system during TPPM and SWf-TPPM decoupling sequences are traced out using computer simulations

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