Abstract: We report the synthesis and characterization of novel bistetracenes, an unconventional, linearly extended conjugated core with eight fused rings. Also described are bisoligoacenes. In general, the properties and stability of large polycyclic aromatic hydrocarbons (PAHs) strongly depend on the mode of ring annellation and the topology of their it-electron systems, which are usually associated with the resonance stabilization energy in large PAHs.

Abstract: We report the synthesis and characterization of novel bistetracenes, an unconventional, linearly extended conjugated core with eight fused rings. Also described are bisoligoacenes. In general, the properties and stability of large polycyclic aromatic hydrocarbons (PAHs) strongly depend on the mode of ring annellation and the topology of their it-electron systems, which are usually associated with the resonance stabilization energy in large PAHs.

Abstract: Patterned single crystals and related devices are facilitated. According to an example embodiment of the present invention, organic semiconducting single-crystals are manufactured using a plurality of surface regions on a substrate. The diffusivity and/or the rate of desorption is controlled at each surface region and at the substrate to grow at least one organic semiconducting single crystal at each surface region from a vapor-phase organic material. This control is effected, for example, before and/or during the introduction of vapor-phase organic material to the surface regions. In some embodiments, the surface regions include an organic film such as octadecyltriethoxysilane (OTS), and in other embodiments, the surface regions include carbon nanotube bundles, either of which can be implemented to exhibit a surface roughness and/or other characteristics that facilitate selective crystal nucleation.

Abstract: Semiconductor apparatus comprising a substrate having a substrate surface; a first dielectric layer comprising molecules of a first compound, the molecules of the first compound having first ends and second ends, the first ends being covalently bonded to a first region of the substrate surface, the second ends having aromatic regions; and a polycrystalline semiconductor layer comprising organic semiconductor molecules with aromatic portions, the polycrystalline semiconductor layer being on the first region of the substrate. Integrated circuits comprising apparatus, and methods for making apparatus and integrated circuits.