Macroscopic Molecular Ordering and Anisotropic Charge Transport Properties of Novel Discotic Liquid Crystalline Triphenylenes

Abstract

We designed novel triphenylene derivatives (TPs) carrying six-alkoxycarbonyl esters as side chains. The TPs show a hexagonal columnar liquid crystalline (LC) phase at room temperature. Futhermore, the TPs in their mesophases exhibit homeotropic alignment in a large-area on various substrates including glass, metals, and polymers. We also discuss about thickness dependency on the molecular orientation and charge transport properties of the LC TPs.