کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5406653 | 1393183 | 2010 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Proton-detected heteronuclear single quantum correlation NMR spectroscopy in rigid solids with ultra-fast MAS
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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![عکس صفحه اول مقاله: 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](/preview/png/5406653.png)
چکیده انگلیسی
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- to 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- to 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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetic Resonance - Volume 202, Issue 1, January 2010, Pages 64-71
Journal: Journal of Magnetic Resonance - Volume 202, Issue 1, January 2010, Pages 64-71
نویسندگان
Gregory P. Holland, Brian R. Cherry, Janelle E. Jenkins, Jeffery L. Yarger,