Study of hydrogen bonding in liquid crystalline solvent by Fourier transform infrared spectroscopy.
A hydrogen-bonded complex between an aromatic acid and an enantiopure chiral amine has been dissolved in a nematic solvent, giving rise to a cholesteric medium. Fourier transform infrared (FT-IR) experiments have been performed at various temperatures on both sides of the cholesteric-isotropic transition. Liquid crystalline order provides significant enhancement to the strength of interaction, inducing a discontinuous jump in concentration of the complex at the cholesteric-isotropic transition.
Palaprat
Guillaume
G
Laboratoire Interactions Moléculaires et Réactivité Chimique et Photochimique, UMR CNRS 5623, Université Paul Sabatier, 31062 Toulouse Cedex 9, France.
Marty
Jean-Daniel
JD
Routaboul
Corinne
C
Lattes
Armand
A
Mingotaud
Anne-Françoise
AF
Mauzac
Monique
M