Metallic Organometallic and Semiconducting Covalent Phases of Free-Standing $\gamma$-Graphdiyne Molecular Wires
One-dimensional carbon allotropes combining sp and sp2 hybridizations provide a versatile platform for atomically precise quantum wires with tunable electronic, vibrational, and mechanical responses. Recent on-surface synthesis has realized the $\gamma$-graphdiyne molecular wire on Au(100) in two interconvertible phase...