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Broadband MAS NMR spectroscopy in the low-power limit
Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för material- och miljökemi (MMK).ORCID-id: 0000-0002-2542-8113
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Rekke forfattare: 52018 (engelsk)Inngår i: Chemical Physics Letters, ISSN 0009-2614, E-ISSN 1873-4448, Vol. 697, s. 29-37Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

We investigate the performance of broadband adiabatic inversion pulses in the high-power (short high-powered adiabatic pulse, SHAP) and low-power (single-sideband-selective adiabatic pulse, S(3)AP) RF regimes on a spin system subjected to large anisotropic interactions. We show by combined experimental results and spin dynamics simulations that when the magic-angle spinning rate exceeds 100 kHz S(3)APs begin outperforming SHAPs. This is especially true for low-gamma nuclei, such as Li-6 in paramagnetic Li-ion battery materials. Finally, we show how S3APs can be improved by combining multiple waveforms sweeping over multiple sidebands simultaneously, in order to produce inverted sideband profiles free from intensity biasing.

sted, utgiver, år, opplag, sider
2018. Vol. 697, s. 29-37
Emneord [en]
Adiabatic pulses, Ultrafast MAS, Paramagnetic NMR, Broadband NMR, Li-ion battery
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Identifikatorer
URN: urn:nbn:se:su:diva-154695DOI: 10.1016/j.cplett.2018.01.028ISI: 000427454000006OAI: oai:DiVA.org:su-154695DiVA, id: diva2:1198147
Tilgjengelig fra: 2018-04-16 Laget: 2018-04-16 Sist oppdatert: 2022-02-26bibliografisk kontrollert

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Pell, Andrew J.

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