High resolution magic angle spinning HRMAS

Due to strong line-broadening, standard gel-phase NMR spectroscopy cannot be used for the analysis of protons. High resolution magic angle spinning (HRMAS) NMR spectroscopy has recently been developed to cover this gap.t l This method has the limitation that specialized HRMAS probes are required however, the method has been applied successfully to a variety of solid supports. Amazingly narrow lines are observed for the proton resonances and 2-D versions of HRMAS experiments can be very easily implemented. 

In addition to the standard solid state MAS-NMR methods, Bliimel and co-workers employed high-resolution magic angle spinning NMR of suspensions, which they abbreviated as HRMAS experiments, for the investigation of the structure of phosphine linkers and homogenous catalyst immobilized on the silica surface. The resulting HRMAS NMR... 

HRMAS High-resolution magic-angle spinning... 

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