All-benzenoid PAHs - Synthesis, Structural Characterizations and Electronic Properties

All-benzenoid PAHs - Synthesis, Structural Characterizations and Electronic Properties 

The parent HBC as purifled by sublimation is a yellow microcrystalline solid [35]. A single crystal of HBC has been grown from molten pyrene using mesity-lene as a flux [41]. Single-crystal structure revealed that HBC crystallized in a y motif with the planar discs stacked in a tilted column. The single crystal structure of hexa-fert-butyl substituted HBC, however, displays a sandwich-herringbone stacking due to the bulky substituents [42]. 

38 on V at 110 °C and the hexakis- 4-dodecylphenyl)-pm-hexabenzocoro-nene (HBC-PhC12) showed a liquid crystalline phase at room-temperature with = 0-22 cm s. The high charge carrier mobility and excellent meso-phase properties qualify them as active semiconductors in organic electronics. The synthesis of HBC materials with different functions and symmetries was thus conducted to further control the order and thus their charge transporting properties. 

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