Two novel gallic trimer 7 and tetramer 8 based on acylhydrazone structures were designed and synthesized in yields 76% and 81%, respectively. Their structures were confirmed by H-1 NMR, ESI-MS, and elemental analysis. Their mesomorphic properties were investigated by DSC, POM, and XRD analyses. The mesomorphic results suggested that they possessed good room-temperature columnar liquid crystalline property with wide range of mesomorphic temperature. The ranges of mesomorphic temperatures for compounds 7 and 8 were as wide as 115 degrees C and 124 degrees C, respectively.