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Related Experiment Videos

A Six-Pulse PASS MAS-NMR Technique Solved by a Phasor Method

Effey1, Butcher, Cappelletti

  • 1Condensed Matter and Surface Sciences Program, Ohio University, Athens, Ohio, 45701

Journal of Magnetic Resonance (San Diego, Calif. : 1997)
|June 20, 1998
PubMed
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Phase Adjusted Spinning Sidebands (PASS) MAS-NMR recovers full spectral intensities by phase adjusting spinning sidebands. This six-pulse technique enhances flexibility and resolves pulse overlap issues in solid-state NMR spectroscopy.

Area of Science:

  • Solid-state Nuclear Magnetic Resonance (NMR) Spectroscopy
  • Materials Science

Background:

  • Phase Adjusted Spinning Sidebands (PASS) MAS-NMR is a technique used to recover spectral intensities.
  • The original PASS sequence by Dixon utilized four pi pulses.

Purpose of the Study:

  • To present a modified PASS MAS-NMR technique using six pi pulses.
  • To address limitations of the original PASS sequence, such as pulse overlap and receiver dead-time.

Main Methods:

  • Development of a six-pi-pulse PASS MAS-NMR sequence.
  • Solving nonlinear, underdetermined PASS equations using a graphical phasor method.
  • Testing of all developed PASS sequences.

Main Results:

  • The modified PASS MAS-NMR technique successfully recovers full intensities of central resonances by phase adjusting spinning sidebands.

Related Experiment Videos

  • The six-pi-pulse sequence offers increased flexibility in pulse spacing, eliminating pulse overlap and receiver dead-time.
  • A table detailing six-pulse delay times for various pitches is provided.

    • Conclusions:

    • The enhanced six-pi-pulse PASS MAS-NMR technique is effective for recovering spectral intensities in solid-state NMR.
    • This method provides a more robust solution for spectral analysis by overcoming previous technical limitations.