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Adiabatic passage Hartmann-Hahn cross polarization in NMR under magic angle sample spinning |
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| Authors: | S. Hediger B. H. Meier R. R. Ernst |
| Affiliation: | a Laboratorium für Physikalische Chemie, Eidgenössische Technische Hochschule, ETH-Zentrum, CH-8092, Zurich, Switzerland b NSR-Center for Molecular Structure, Design and Synthesis, Laboratory of Physical Chemistry, University of Nijmegen, Toernooiveld, 6525 ED, Nijmegen, The Netherlands |
| Abstract: | We have recently demonstrated that polarization transfer using an adiabatic passage through the Hartmann-Hahn condition (APHH-CP) by a variation of the radio-frequency amplitude can substantially improve the transfer efficiency over Hartmann-Hahn cross polarization. Here we show that APHH-CP can be combined with fast magic angle sample spinning (MAS). The heteronuclear dipolar order, established in the course of the transfer, can indeed be created and preserved. |
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