A convenient method for preparing rigid-core ionic liquid crystals.
An efficient, solvent free method for the N-arylation of imidazole by 1-(dodecyloxy)-4-iodobenzene using Cu(II)-NaY as catalyst and K(2)CO(3) as base is reported. By this synthetic approach, mesomorphic 3-[4-(dodecyloxy)phenyl]-1-methyl-1H-imidazol-3-ium iodide was synthesized in a two-step procedure, and its mesomorphism has been fully investigated by polarised optical microscopy, differential scanning calorimetry and X-ray diffraction. In addition its lamellar crystal structure, electrochemical behaviour and UV (absorption and emission) properties are reported.
Fouchet
Julien
J
Institut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504, DMO, CNRS-Université de Strasbourg, BP 43, 23 rue du Loess, F-67034 Strasbourg Cedex 2, France.
Douce
Laurent
L
Heinrich
Benoît
B
Welter
Richard
R
Louati
Alain
A
Ullman reaction; imidazolium; ionic liquid crystals