Liquid-crystalline Phthalocyanine with Short Intercolumnar Distance and Variation of the Liquid Crystallinity Induced by Square-planar Metal Ions

Toward enhancement of intercolumnar electronic communications in thermotropic columnar liquid-crystalline (LC) materials, we report LC crown ether-decorated phthalocyanine with the shortest intercolumnar distance among LC phthalocyanines. Moreover, the liquid crystallinity was variable by the introduction of square-planar metal ions, despite the subtle structural differences with a planar configuration.