Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5406404 | Journal of Magnetic Resonance | 2011 | 5 Pages |
Abstract
Substantial resolution and sensitivity enhancements of solid-state 1H detected 14N HMQC NMR spectra at very fast MAS rates up to 80 kHz, in a 1 mm MAS rotor, are presented. Very fast MAS enhances the 1H transverse relaxation time and efficiently decouples the 1H-14N interactions, both effects leading to resolution enhancement. The micro-coil contributes to the sensitivity increase via strong 14N rf fields and high sensitivity per unit volume. 1H-14N HMQC 2D spectra of glycine and glycyl-l-alanine at 70 kHz MAS at 11.7 T are observed in a few minutes with a sample volume of 0.8 μL.
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Authors
Yusuke Nishiyama, Yuki Endo, Takahiro Nemoto, Hiroaki Utsumi, Kazuo Yamauchi, Katsuya Hioka, Tetsuo Asakura,