Prominent Electron Transport Property Observed for Triply Fused Metalloporphyrin Dimer: Directed Columnar Liquid Crystalline Assembly by Amphiphilic Molecular Design

A triply fused copper porphyrin dimer, when site-specifically modified on its periphery with hydrophobic and hydrophilic wedges (1 C12/TEG ), self-assembles into a columnar liquid crystalline (LC) mesophase over a wide-temperature range from −17 to 99 °C but gives rise to an amorphous solid when modified with only hydrophobic (1 C12/C12 ) or hydrophilic wedges (1 TEG/TEG ). A LC film of 1 C12/TEG displays at 16 °C a top-class one-dimensional electron mobility (0.27 cm2/V·s), as evaluated from its maximum flash-photolysis time-resolved microwave conductivity.