¹⁵N-¹⁵ correlation with ¹H detection at 100 kHz MAS

¹⁵N-¹⁵N correlation is demonstrated.  Although nitrogen nuclei  play  crucial  parts  in many materials, there is only a few reports on ¹⁵N-¹⁵N correlation because of very weak¹⁵N-¹⁵N homonuclear  dipolar  interactions.  ¹H-¹H  spin  diffusion,  which is accelerated by RFDR, can be used instead of ¹⁵N-¹⁵N interactions to correlate ¹⁵N  nuclei. The correlation spectra are observed indirectly by ¹H with 3D manner.

Reference

Y. Nishiyama, M. Malon, Y. Ishii, A. Ramamoorthy, J. Magn. Reson. 244 (2014) 1-5.
*This research was supported by funds from NIH (GM084018 and GM095640 to Prof. A.Ramamoorthy).