Ultra-wideline Solid-State NMR: Developments and Applications of the WCPMG Experiment

  • Luke A. O’Dell
Reference work entry


Large anisotropic interactions can lead to solid-state NMR powder patterns that exceed the excitation and detection bandwidths of standard NMR techniques and hardware. By combining the advantages of broadband, frequency-swept WURST pulses with CPMG signal enhancement achieved through the continuous refocusing of the transverse magnetization, the WCPMG experiment and its derivatives are the most efficient way to acquire these so-called ultra-wideline NMR spectra. This chapter describes the WCPMG pulse sequence and outlines several related developments including broadband cross polarization, dynamic nuclear polarization, and relaxation-based resolution enhancement methods. A number of example applications of the WCPMG experiment to study spin-half, half-integer quadrupolar, and integer spin quadrupolar nuclei in a variety of materials are then summarized.


Solid-state NMR Ultra-wideline WURST pulses Powder patterns Signal enhancement 


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© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Institute for Frontier MaterialsDeakin UniversityGeelongAustralia

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