A temperature dependence study of small solutes in zero electric field gradient nematic liquid crystal mixtures

Abstract

The temperature dependences of the proton nuclear magnetic resonance (NMR) spectra of the solutes 1,3,5-trichlorobenzene, metadichlorobenzene, orthodichlorobenzene, 1,3-bromochlorobenzene, benzene and 2-butyne have been studied in the special ‘zero electric field gradient’ mixtures 55 wt% 1132-N-(4-ethoxybenzylidene)-4'-n-butylaniline (EBBA) and 70 wt% (4-n-pentyl)-4'-cyanobiphenyl-EBBA. The order parameter matrices obtained for each solute from an analysis of the NMR spectra indicate that the solutes experience a similar anisotropic potential in both mixtures.