Wide-Range 2D Lattice Correlation Unveiled for Columnarly Assembled Triphenylene Hexacarboxylic Esters


  • This work was supported by KAKENHI (21350108 for T.F. and 23750170 for T.K.). The synchrotron X-ray diffraction experiments were performed at the BL45XU in the SPring-8 with the approval of the RIKEN SPring-8 Center (proposal 20100062 and 20110065).


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Dipole bridge: Liquid-crystalline (LC) triphenylenes (see picture) self-assemble columnarly into a hexagonal geometry with a wide-range 2D lattice correlation, for which distal and proximal dipole–dipole interactions are considered responsible. By virtue of the strong intercolumnar interaction, the LC columns of the triphenylene can spontaneously align homeotropically on the 12 different substrates examined (POM=polarized optical microscopy).