European scientists have made biphenylene, a theoretically predicted two-dimensional carbon material similar to graphene, but made of octagons, hexagons and squares instead of just hexagons. It has metallic properties, with stripes of the network 21 atoms wide behaving like a metal while, according to Aalto University in Finland, while graphene is a semiconductor at this size. ...

This story continues at Enter biphenylene, a flat conductive carbon alternative to graphene

Or just read more coverage at Electronics Weekly