title: The conformation and orientational order of a 1,2-disubstituted ethane nematogenic molecule (I22) in liquid crystalline and isotropic phases studied by NMR spectroscopy.
abstract: The structure, conformation and orientational order of the mesogen I22 have been studied by proton, carbon-13 and deuterium 1D and 2D-NMR spectroscopies at natural abundance and at various magnetic fields when in the nematic phase, the isotropic phase close to the nematic-isotropic phase transition, and as a solute in the chiral nematic solution comprised of the polypeptide PBLG dissolved in chloroform. It is concluded that 95% of conformers have a trans arrangement about the central C-C bond of the ethane fragment in all phases.
authors.affiliation: School of Chemistry, University of Southampton, Southampton, UKSO17 1BJ. jwe@soton.ac.uk
authors.forename: James W
authors.initials: JW
authors.lastname: Emsley
authors.forename: Philippe
authors.initials: P
authors.lastname: Lesot
authors.forename: Anne
authors.initials: A
authors.lastname: Lesage
authors.forename: Giuseppina
authors.initials: G
authors.lastname: De Luca
authors.forename: Denis
authors.initials: D
authors.lastname: Merlet
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Pileio