Low rf power high resolution 1H-13C-14N separated local field spectroscopy in lyotropic mesophases

► Pulse sequence for local field spectroscopy at low radio frequency power. ► Simultaneous measurement of 1H-13C, 1H-14N and 13C-14N dipolar couplings correlated to 1H and 13C chemical shifts. ► Relative signs of heteronuclear dipolar couplings. ► Implementation on standard solution state high resolution probes. ► Application to lossy ionic lyotropic mesophases with dipolar coupling in the range of several kHz.