Coronene-Containing N‑Heteroarenes: 13 Rings in a Row

We describe the modular synthesis
of three novel large N-heteroarenes,
containing 9, 11, and 13 annulated rings. This modular system features
fused azaacene units to a coronene nucleus. We evaluate the optical
and electronic properties and the solid-state packing of the targets.
The electronic properties of the 13-ring N-heteroarene allow the fabrication
of a proof-of-concept thin-film transistor. Electron mobilities up
to 8 × 10–4 cm/(V s) were obtained for polycrystalline
films.