Improvements in carbon-13 broadband homonuclear cross-polarization for 2D and 3D NMR.

A. Mohebbi and A. J. Shaka

Chemistry Department, University of California, Irvine, CA 92697, USA.

We describe a new multiple-pulse sequence (FLOPSY-8) for broadband homonuclear cross-polarization and compare it both theoretically and experimentally with the previous state of the art. FLOPSY-8 offers significant improvements in cross-polarization efficiency compared with the best alternative, and is especially useful for the large spectral bandwidths encountered in highfield carbon-13 NMR.