Abstract
AbstractThe existence of well‐resolved dipolar and/or quadrupolar splittings in the NMR spectra of solutes in ordered phases greatly facilitates analysis of nulcear spin relaxation pathways in terms of individual spectral density parameters evaluated at well‐defined frequencies. Both auto‐ and cross‐correlation terms are experimentally accessible via an appropriate combination of modern pulse techniques, and this detailed information is of use in assessing the validity of various models for molecular motion in ordered systems. Spectral density data for small, rigid solutes in nematic mesophases can be rationalized in terms of rotational diffusion, including effects of static order, together with order director fluctuations. The techniques developed for the simpler nematics can readily be used for solutes in the smectic phase as well as for studies of the liquid crystalline solvent molecules themselves.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
