Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5407103 | Journal of Magnetic Resonance | 2009 | 8 Pages |
Abstract
The performance of various high-resolution 1D 1H CRAMPS pulse schemes at moderate and high static magnetic fields (400Â MHz and 800 1H Larmor frequencies) and spinning rates up to 35Â kHz, using state-of-the-art electronics is compared. The performance of the 1H windowed acquisition decoupling schemes, wDUMBO, wPMLG3 and wSAM3 is investigated using their effective z-rotation variants on glycine and other small biological molecules, tripeptide reduced glutathione and nucleoside uridine. 1H CRAMPS spectra, recorded with windowed 1H-1H decoupling methods and fast MAS (35Â kHz) and high-field are reported for the first time. 1H spectra exhibiting outstanding resolution and completely free from any artifact are also shown. The effect on spectra quality of the decoupling rf cycle and rotor periods ratio (ÏC/ÏR) and the power requirements needed for each windowed 1H CRAMPS methods are discussed.
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Authors
LuÃs Mafra, Cristina Coelho, Renée Siegel, João Rocha,