Design of one-dimensional transition metal assemblies

TL;DRAbstract

The liquid crystalline properties of several metallomesogens with unconventional shapes based upon β-diketonate ligands were investigated. Rhodium and iridium compounds with half-disc shapes, eight vertex zirconium compounds with square antiprismatic cores, and octahedral compounds containing iron and cobalt in the cores all align in highly ordered columnar arrangements. All of these systems produced materials that are liquid crystalline at room temperature and exhibit stability over moderate to large temperature ranges illustrating metallomesogens with unconventional shapes may lead to systems with technological relevance. Incorporating enantiomerically pure chiral centers into the periphery of the cores of the octahedral based liquid crystals produced systems with an amplification of the transition metal based chiral center in liquid crystal phases of fluxional compounds. This chiral effect may also be responsible for significant deviations in the packing arrangements of the columns

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