Proton-detected heteronuclear single quantum correlation NMR spectroscopy in rigid solids with ultra-fast MAS.
Proton-detected heteronuclear single quantum correlation NMR spectroscopy in rigid solids with ultra-fast MAS.
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DOI:
10.1016/j.jmr.2009.09.024
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发表时间:
2010-01
期刊:
影响因子:
--
通讯作者:
Yarger JL
中科院分区:
文献类型:
--
作者:
Holland GP;Cherry BR;Jenkins JE;Yarger JL
In this article, we show the potential for utilizing proton-detected heteronuclear single quantum correlation (HSQC) NMR in rigid solids under ultra-fast magic angle spinning (MAS) conditions. The indirect detection of carbon-13 from coupled neighboring hydrogen nuclei provides a sensitivity enhancement of 3 - 4 fold in crystalline amino acids over direct-detected versions. Furthermore, the sensitivity enhancement is shown to be significantly larger for disordered solids that display inhomogeneously broadened carbon-13 spectra. Latrodectus hesperus (Black Widow) dragline silk is given as an example where the sample is mass-limited and the sensitivity enhancement for the proton-detected experiment is 8 - 13 fold. The ultra-fast MAS proton-detected HSQC solid-state NMR technique has the added advantage that no proton homonuclear decoupling is applied during the experiment. Further, well-resolved, indirectly observed carbon-13 spectra can be obtained in some cases without heteronuclear proton decoupling.
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影响因子:
4.4
作者:
BENNETT, AE;RIENSTRA, CM;GRIFFIN, RG
通讯作者:
GRIFFIN, RG
影响因子:
4.2
作者:
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DOI:
10.1006/jmra.1995.0760
发表时间:
1995-12-01
期刊:
JOURNAL OF MAGNETIC RESONANCE SERIES A
影响因子:
--
作者:
Ding, SW;McDowell, CA
通讯作者:
McDowell, CA
影响因子:
15
作者:
Asakura, T;Yao, JM;Ulrich, AS
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Ulrich, AS
影响因子:
2.8
作者:
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通讯作者:
Emsley, L