A method for dynamical characterization and high resolution 1H-NMR in dipolar coupled systems: application to liquid crystals

A.K. CHATTAH Y P.R. LEVSTEIN

JOURNAL OF CHEMICAL PHYSICS

American Institute of Physics

Año: 2006 vol. 124 p. 1245131 - 1245131

0021-9606

font face="Times-Roman" color="#0000ff" size="2"> We study the variation of 13C spectra as function of off-resonances in protons during decoupling, for continous wave (CW) and SPINAL-64 schemes in the liquid crystals 8CB and 5CB. The self-decoupling mechanism induced by the strong homonuclear dipolar interactions provides a method to study the dynamics of the proton system through the 13C spectra. In the nCB liquid crystals each non quaternary carbon is coupled through dipolar interactions to more than one proton constituting a SI_{N} group (with N>=2). We extend the analytical treatment of the variation of the 13C &n