High-Resolution 39K NMR Spectroscopy of Bio-organic Solids

详细信息    查看全文

• 作者：Gang Wu ; Zhehong Gan ; Irene C. M. Kwan ; James C. Fettinger ; Jeffery T. Davis
• 刊名：Journal of the American Chemical Society
• 出版年：2011
• 出版时间：December 14, 2011
• 年：2011
• 卷：133
• 期：49
• 页码：19570-19573
• 全文大小：759K
• 年卷期：v.133,no.49(December 14, 2011)
• ISSN：1520-5126

文摘

We report the first implementation of the multiple-quantum magic-angle-spinning method to obtain high-resolution ³⁹K NMR spectra for bio-organic solids. The observed spectral resolution in the isotropic dimension is nearly at the sub-ppm level, which approaches the intrinsic resolution limit determined primarily by quadrupole relaxation. We show that high-resolution solid-state ³⁹K NMR spectroscopy can be used as a new means of probing K⁺ ions in biomolecular systems.