Journal
CHEMISTRY OF MATERIALS
Volume 18, Issue 4, Pages 968-974Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cm052221f
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A 1,3,5-benzenetrisamide with three pending hexaalkoxytriphenylene groups has been synthesized as an example of an interesting class of intermolecular H-bond-stabilized columnar discotic liquid crystalline materials. The material forms a plastic hexagonal discotic phase that does not crystallize on cooling from the isotropic phase, even after annealing for a few days at room temperature. X-ray and computational studies provide a detailed model for the organization of this material. The charge carrier mobility, 0.12 cm(2) V-1 s(-1) at 180 degrees C, is the highest ever reported for liquid crystalline triphenylene systems, and even increases with temperature. The factors responsible for this behavior are discussed.
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