Billion-Fold Enhancement in Sensitivity of Nuclear Magnetic Resonance Spectroscopy for Magnesium Ions in Solution

Gottberg, Alexander and Stachura, Monika and Kowalska, Magdalena and Bissell, Mark L. and Arcisauskaite, Vaida and Szunyogh, Dániel Mihály (2014) Billion-Fold Enhancement in Sensitivity of Nuclear Magnetic Resonance Spectroscopy for Magnesium Ions in Solution. CHEMPHYSCHEM, 15 (18). pp. 3929-3932. ISSN 1439-4235

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Abstract

NMR spectroscopy is highly sensitive as compared to conventional NMR spectroscopy, and may be applied for several elements across the periodic table. β - NMR has previously been applied successfully in the fields of nuclear and solid state physics. In this work β - NMR is applied for the first time to record an NMR spectrum for a species in solution. 31 Mg β - NMR spectra are measured for as few as 10 7 magnesium ions in ionic liquid (EMIM - Ac) within minutes as a prototypical test case. Resonances are observed at 3882.9 kHz and 3887.2 kHz in an external field of 0.3 T. The key achievement of the current work is to demonstrate that β - NMR is applicable for analysis o f species in solution, and thus represents a novel spectroscopic technique in general chemistry and potentially in biochemistry.

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