Fourier transform multiple quantum nuclear magnetic resonance

Authors:
  • GDGary Drobny
    Gary Drobny
  • APAlexander Pines
    Alexander Pines
  • SSSteven Sinton
    Steven Sinton
  • DWDaniel P. Weitekamp
    Daniel P. Weitekamp
  • DWDavid Wemmer
    David Wemmer
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Abstract
The excitation and detection of multiple quantum transitions in systems of coupled spins offers, among other advantages, an increase in resolution over single quantum n.m.r. since the number of lines decreases as the order of the transition increases. This paper reviews the motivation for detecting multiple quantum transitions by a Fourier transform experiment and describes an experimental approach to high resolution multiple quantum spectra in dipolar systems along with results on some protonated liquid crystal systems. A simple operator formalism for the essential features of the time development is presented and some applications in progress are discussed.