Chemical shift anisotropy selective inversion
Author(s)Caporini, Marc A.; Turner, Christopher John; Bielecki, Anthony; Griffin, Robert Guy
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Magic angle spinning (MAS) is used in solid-state NMR to remove the broadening effects of the chemical shift anisotropy (CSA). In this work we investigate a technique that can reintroduce the CSA in order to selectively invert transverse magnetization. The technique involves an amplitude sweep of the radio frequency field through a multiple of the spinning frequency. The selectivity of this inversion mechanism is determined by the size of the CSA. We develop a theoretical framework to describe this process and demonstrate the CSA selective inversion with numerical simulations and experimental data. We combine this approach with cross-polarization (CP) for potential applications in multi-dimensional MAS NMR.
DepartmentMassachusetts Institute of Technology. Department of Chemistry
Journal of Magnetic Resonance
Caporini, Marc A., Christopher J. Turner, Anthony Bielecki, and Robert G. Griffin. “Chemical shift anisotropy selective inversion.” Journal of Magnetic Resonance 200, no. 2 (October 2009): 233-238.
Author's final manuscript