Abstract

Microcoil High-Resolution Magic-Angle Spinning NMR Spectroscopy,

J. W. G. Janssen, A. Brinkmann, E. R. H. van Eck, P. J. M. van Bentum, and A. P. M. Kentgens,
J. Am. Chem. Soc. 128, 8722-8723, (2006).

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We report the construction of a dual-​channel microcoil nuclear magnetic resonance probehead allowing magic-​angle spinning for mass-​limited samples. With coils down to 235 μm inner diameter, this allows high-​resolution solid-​state NMR spectra to be obtained for amounts of materials of a few nanoliters. This is demonstrated by the carbon-13 spectrum of a tripeptide and a single silk rod, prepared from the silk gland of the Bombyx mori silkworm. Furthermore, the microcoil allows for radio frequency field strengths well beyond current probe technology, aiding in getting the highest possible resolution by efficiently decoupling the observed nuclei from the abundantly present proton nuclei.

Dr. Andreas Brinkmann
Measurement Science and Standards
National Research Council
1200 Montreal Road, M-40
Ottawa, Ontario K1A 0R6
Canada
Tel. +1-613-990-0319
Fax. +1-613-990-1555
Andreas.Brinkmann@nrc-cnrc.gc.ca
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