| Solvent Suppression in Intermolecular Magnetic Resonance Spectra Multiple-Quantum Coherence Nuclear with Only z-axis Gradients |
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| 作者姓名： | 丰海 张盛春 蔡淑惠 陈忠 冯稷 |
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| 作者单位： | [1]Institute of Physics, Chinese Academy of Sciences, Beijing 100080 [2]Department of Physics, State Key Laboratory of Physical Chemistry of Solid Surface, Xiamen University, Xiamen 361005 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grants Nos 20573084 and 10575085, and NCET of the Ministry of Education of China. |
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| 摘 要： | The solvent peak in the intermolecular multiple-quantum coherence spectra can be suppressed by either applying pulse field gradients or spinning sample along the magic angle direction （φ = 54.7）. However, these two methods also suppress the signals of the solute. We design two pulse sequences with only z-axis gradients to suppress the solvent peak without reducing the intensity of solute signals. Compared to the former pulse sequence, the latter pulse sequence is insensitive to the imperfection of pulse flip angles. When the flip angles of the second pulse sequence are purposely deviated 1/10 from the optimal values, the solvent peak is still weak. Theoretical expressions, experimental observations and computer simulations demonstrate that the two methods can be used to effectively suppress solvent peak in intermolecular multiple-quantum coherence spectra.
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| 关 键 词： | 溶剂抑制作用 磁共振 量子学 原子能 |
| 收稿时间： | 2006-7-6 |
| 修稿时间： | 2006-07-06 |
Solvent Suppression in Intermolecular Multiple-Quantum Coherence Nuclear Magnetic Resonance Spectra with Only z-axis Gradients |
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| FENG Hai,ZHANG Sheng-Chun,CAI Shu-Hui,CHEN Zhong,FENG Ji.Solvent Suppression in Intermolecular Magnetic Resonance Spectra Multiple-Quantum Coherence Nuclear with Only z-axis Gradients[J].Chinese Physics Letters,2007,24(4):913-916. |
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| Authors: | FENG Hai ZHANG Sheng-Chun CAI Shu-Hui CHEN Zhong FENG Ji |
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| Affiliation: | 1.Institute of Physics, Chinese Academy of Sciences, Beijing 100080; 2.Department of Physics, State Key Laboratory of Physical Chemistry of Solid Surface, Xiamen University, Xiamen 361005 |
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| Abstract: | |
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| Keywords: | 32 30 Dx 33 25 +k 76 60 -k |
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