Contribution of dispersion forces in the nematic solvant-aromatic solute interaction
Written by sctunisie no commentsThe orientation of three iodobenzenes (C6H5I, o.C6H4I2, p.C6H4I2) in three nematic liquid crystals with different aromaticities has been determined by measuring the proton-proton and the proton-carbon 13 dipolar couplings. Assuming a solvent-solute interaction potential based entirely on dispersion forces, it was found that the less aromatic the solvent the better the agreement between theory and experience. The discrepancies are probably due to the formation of charge-transfer molecular complexes.
Y. Arfaoui, E. Haloui
NMR, nematic liquid crystal, iodobenzenes, dispersion
Pages 63-71
