Enhanced nonlinear magnetic resonance signals via square wave dipolar fields
R. T. Branca,1 G. Galiana,1,2 and W. S. Warren1
1Center for Molecular and Biomolecular Imaging, Duke University, Durham, North Carolina 27708, USA
2Chemistry Department, Princeton University, Princeton, New Jersey 08544, USA
J. Chem. Phys. 129, 054502 (2008)
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. ©2008 American Institute of Physics
1Center for Molecular and Biomolecular Imaging, Duke University, Durham, North Carolina 27708, USA
2Chemistry Department, Princeton University, Princeton, New Jersey 08544, USA
J. Chem. Phys. 129, 054502 (2008)
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. ©2008 American Institute of Physics
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