Supramolecular Liquid Crystals Composed of Diacetylene Carboxylic Acids and Pyridine Derivatives

Abstract

We previously discovered a novel type of discotic liquid crystals (LC) of 1,3-alkadiynyl-4-benzoic acids (nPhDA) and reported the phase transition behavior of nPhDAs and its mixed LC systems with 4-alkoxybonzoic acids (nOBA) known for the calamitic LC system of its dimer. In this study, we investigated the structure and physical properties of supramolecular LC systems of nPhDA and some kinds of pyridine derivatives (nPy), which exhibit no LC phase by themselves, in order to discuss a correlation between the structure of supramolecular dimers and the formation of LC phase constructed by hierarchical self-assembly of nPhDA/nPy dimers.