动态核极化 H 在 Gd 杂的 In (OH) 中
Michael A Hope1, Yuxuan Zhang1, Amrit Venkatesh1
1Institut des Sciences et Ingenierie Chimiques, École Polytechnique Fedérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
Journal of magnetic resonance (San Diego, Calif. : 1997)
|June 18, 2023
概括
这项研究表明,使用动态核极化 (DNP) 与加多 (Gd3+) 在立方氧化中增强核磁共振 (NMR) 灵敏度. 这种新的方法使得氧气-17 (17O) NMR光谱的敏感检测成为可能.
科学领域:
- 固态NMR光谱学 固态NMR光谱学
- 材料科学是一种材料科学.
- 量子化学是一种量子化学.
背景情况:
- 动态核极化 (DNP) 增强了核磁共振 (NMR) 的灵敏度.
- 像加多 (Gd3+) 这样的高旋转金属离子是有效的DNP剂.
- 使用Gd3+的DNP效率受到金属位点对称性和旋转扩散的影响.
研究的目的:
- 研究立方氧化 (In(OH) 3) 作为内源性Gd3+ DNP的高对称性材料.
- 实现增强的质子 (H) 极化,以提高NMR灵敏度.
- 使用增强的极化来测量自然丰富的O NMR光谱.
主要方法:
- 固态动态核极化 (DNP) 实验. 固态动态核极化 (DNP) 实验.
- 加多 (Gd3+) 在立方In (OH) 3中进行注.
- 质子 (1H) 和氧-17 (17O) 的NMR光谱.
- 印-115 (115In) 的核磁共振检测局部对称性.
主要成果:
- 达到高达9的H极化增强因子.
- 通过使用DNP成功测量了自然丰富的O NMR光谱.
- 基于Gd3+集群和质子乱诱导的对称性减少的解释增强.
- 在NMR中通过四极115观察到的影响.
结论:
- 在无机固体中使用Gd3+剂证明了第一个H DNP.
- 突出立方In(OH)3作为DNP应用的有希望的材料.
- 建立了一种在无机材料中敏感的NMR检测方法.
关键词:
(1) HH (1) HH (1) HH (1) H (1) H (1) H (1) H (1) H (1) H (1) H (1) H (1) H (1) H (1) H (1) H (1) H (1)(115) 在 (115) 在(17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) O OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) O OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) OO (17) O在Czjzek的分销中心.动态核极化是指动态的核极化.在EPR中使用EPR.Gd(3+) 的时间.这是NMR的NMR.在这里,我们将讨论 PRESTO.相关概念视频
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