High-resolution proton CRAMPS NMR using narrowband analog filters and postponed data acquisition
文献类型：期刊论文
| 作者 | Wang, Liying1,2; Zhou, Donghua H.1 |
| 刊名 | JOURNAL OF MAGNETIC RESONANCE
 |
| 出版日期 | 2013-09-01 |
| 卷号 | 234页码:141-146 |
| 关键词 | High resolution proton spectra CRAMPS proton NMR Magic-angle spinning NMR Audio filter Postponed data sampling Noise reduction |
| 英文摘要 | Proton linewidths decrease with increasing magic-angle spinning (MAS) rates. However, Without spin dilution by deuteration, even with the fastest MAS rates available today, the narrowest proton linewidths are obtained by using the combined rotation and multiple pulse spectroscopy (CRAMPS) method. Direct observation under windowed CRAMPS typically introduces several tens of times more noise, partly because wideband analog filters (e.g. 5 MHz) must be used or sometimes even bypassed. Here we report that it is possible to keep using narrowband analog filters (about 50 kHz cutoff frequency) in CRAMPS by taking advantage of the time delay caused by the filters, which is inversely proportional to the cutoff frequency. This delay coincides with typical CRAMPS cycle times, enabling acquisition of the data point in the next detection window. The noise of such CRAMPS spectra is only about 5 times larger than MAS-only spectra. This new method allows CRAMPS to be performed on systems that lack wideline hardware (wideband filters and fast ADCs), for example, older spectrometers originally intended for solution NMR. (C) 2013 Elsevier Inc. All rights reserved. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences ; Technology |
| 类目[WOS] | Biochemical Research Methods ; Physics, Atomic, Molecular & Chemical ; Spectroscopy |
| 研究领域[WOS] | Biochemistry & Molecular Biology ; Physics ; Spectroscopy |
| 关键词[WOS] | SOLID-STATE NMR ; NUCLEAR-MAGNETIC-RESONANCE ; MULTIPLE-PULSE ; CORRELATION SPECTROSCOPY ; SENSITIVITY ENHANCEMENT ; MOLECULAR-STRUCTURE ; ROTATING SOLIDS ; SPIN-DIFFUSION ; H-1 ; PROTEINS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000323085800018 |
| 公开日期 | 2015-07-14 |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/1013]  |
| 专题 | 武汉物理与数学研究所_磁共振应用研究部 |
| 作者单位 | 1.Oklahoma State Univ, Dept Phys, Stillwater, OK 74078 USA 2.Chinese Acad Sci, State Key Lab Magnet Resonance & Atom Mol Phys, Key Lab Magnet Resonance Biol Syst, Wuhan Ctr Magnet Resonance,Wuhan Inst Phys & Math, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Liying,Zhou, Donghua H.. High-resolution proton CRAMPS NMR using narrowband analog filters and postponed data acquisition[J]. JOURNAL OF MAGNETIC RESONANCE,2013,234:141-146. |
| APA | Wang, Liying,&Zhou, Donghua H..(2013).High-resolution proton CRAMPS NMR using narrowband analog filters and postponed data acquisition.JOURNAL OF MAGNETIC RESONANCE,234,141-146. |
| MLA | Wang, Liying,et al."High-resolution proton CRAMPS NMR using narrowband analog filters and postponed data acquisition".JOURNAL OF MAGNETIC RESONANCE 234(2013):141-146. |
入库方式： OAI收割
来源：武汉物理与数学研究所
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