A columnar mesophase from a disc-shaped molecule derived from triphenylamine: synthesis, mesomorphic behaviour and optical properties

The design and synthesis of a disc-like liquid crystalline compound using triphenylamine as a core has been achieved. The mesogenic properties were characterized by polarizing microscopy and differential scanning calorimetry and XRD studies. The compound existed as a hexagonal columnar mesophase. The fluorescence properties revealed the presence of intermolecular excimer formation. (c) 2007 Elsevier Ltd. All rights reserved.