r TPPM: towards improving solid-state NMR two-pulse phase-modulation heteronuclear dipolar decoupling sequence by refocusing.
作者： Asif Equbal , Subhradip Paul , Venus Singh Mithu , Joachim M. Vinther , Niels Chr. Nielsen
DOI: 10.1016/J.JMR.2014.04.009
关键词: Pulse (physics) 、 Decoupling (electronics) 、 Heteronuclear molecule 、 Magic angle spinning 、 Dipole 、 Chemistry 、 Solid-state nuclear magnetic resonance 、 Sequence 、 Nuclear magnetic resonance 、 Phase modulation
摘要: Abstract We present here a simple refocused modification, r TPPM, of the Two-Pulse Phase-Modulation (TPPM) heteronuclear decoupling method, which improves and makes sequence much more robust with respect to essential experimental parameters. The modified is compared established TPPM variety other sequences at low moderate magic-angle spinning frequencies. Simulations are shown compare various observations from simulations corroborated findings two frequencies on U–13C-glycine U–13C-L-histidine.HCl. H 2 O.
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