Ribbon made of carbon pentagons and heptagons has metallic properties

Nature, Published online: 28 October 2026; doi:10.1038/d41586-026-03298-3 Ribbons that are composed exclusively of five- and seven-carbon rings have metal-like electron transport and conductance. The ribbons can be synthesized by linking previously inaccessible chains of paired five-membered rings, providing a route to making highly conducting carbon nanoribbons.