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Existence of heteroaromatic graphene analog is predicted based upon periodicfirst principles density functional theory calculations. The new material, poly1,5-dihydro 1,5-diazocine diazene, is a monolayered aromatic (planar)cross-linked polymer with cohesion energy - 6.03 eV/atom. Calculations revealits Dirac insulator properties with narrow (~ 0.057 eV) and nearly direct bandgap in close vicinity of \Gamma-point of Brillouin Zone. The predicted Fermivelocity of charge carriers ranges from ~3.41x105 m/s to ~1.63x106 m/s; thuseffective mass of those could be up to ~2260 times lower than free electronone. These make proposed material a good alternative to graphene.

Evidence of Dirac insulator properties in poly 1,5-dihydro-1,5-diazocine diazene