Moving tube NMR

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Fig. 1 Picture shows a long tube (as used in the moving tube NMR experiments) juxtaposed with a typical 5 mm OD NMR tube and a 10 mm OD NMR tube.
Fig. 1 Picture shows a long tube (as used in the moving tube NMR experiments) juxtaposed with a typical 5 mm OD NMR tube and a 10 mm OD NMR tube.

Moving Tube NMR [1, 2] is a technique that uses a long NMR tube (approximately 5 feet) that is moved incrementally between scans. The purpose of this action is to remove the relaxing sample portion from the coil and replace it with a pre-equilibrated sample portion, thus skipping the relaxation delay. This technique facilitates experiments requiring a long relaxation delay which may otherwise be too time consuming.

A more detailed description and demonstration of the moving tube technique is given in the publication [1]. For a guided tour of a Moving Tube NMR system, including the automated tube-moving apparatus, see the youtube video [2].

References

  1. Donovan, KJ and Allen, M and Martin, RW and Shaka, AJ. Sensitive, quantitative carbon-13 NMR spectra by mechanical sample translation. Journal of Magnetic Resonance , 2008. BibTeX [donovan08]
  2. Watch YouTube video!

    [youtube]

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