Structural Study on Columnar Mesophases Consisting of H-Bonded Supramolecules

The use of complementary 2,4,6-triarylamino-1,3,5triazines and benzoic acids has allowed the preparation of a variety of disklike supramolecules with different substitution patterns around an Hbonded aromatic core. Most of the complexes obtained show columnar mesomorphism promoted by an efficient columnar packing of the aromatic cores surrounded by a minimum of six peripheral tails. The steric requeriments for the appearance of mesomorphic behavior in these supramolecular complexes have been established by X-ray diffraction studies and density calculations based on the parameters of the liquid crystalline organization.