Branca R T, Galiana G, Warren W S
Center for Molecular and Biomolecular Imaging, Duke University, Durham, North Carolina 27708, USA.
J Chem Phys. 2008 Aug 7;129(5):054502. doi: 10.1063/1.2962976.
This report introduces a new approach that enhances nonlinear solution magnetic resonance signals from intermolecular dipolar interactions. The resulting signals can theoretically be as large as the full equilibrium magnetization. Simple, readily implemented pulse sequences using square-wave magnetization modulation simultaneously refocus all even order intermolecular multiple quantum coherences, leading to a substantial net signal enhancement, complex nonlinear dynamics, and improved structural sensitivity under realistic conditions.
本报告介绍了一种新方法，该方法可增强来自分子间偶极相互作用的非线性溶液磁共振信号。理论上，所产生的信号可与完全平衡磁化强度一样大。使用方波磁化调制的简单且易于实现的脉冲序列可同时重聚焦所有偶数阶分子间多量子相干，从而在实际条件下实现显著的净信号增强、复杂的非线性动力学以及提高的结构灵敏度。
