Synthesis and characterization of a single-layer conjugated metal–organic structure featuring a non-trivial topological gap

• DOI: 10.1039/c8nr08477g
• Publication Date: 2018-12-18T03:04:19Z
• Authors: Zi'Ang Gao; Chia-Hsiu Hsu; Jing Liu; Feng-Chuan Chuang; Ran Zhang; Bowen Xia; Hu Xu; Li Huang; Qiao Jin; Pei Nian Liu; Nian Lin
• Keywords: Diimine; Characterization

We employ an on-surface assembly protocol to synthesize a single layer of two-dimensional conjugated network (Ni3(HITP)2) on Au(111) surface. The electronic coupling between the π orbital diimine ligand and d metal ion renders efficient π-conjugation. Density-functional theory calculations provide evidence non-trivial topological gap in surface-adsorbed layer. This work demonstrates that single-layer 2D metal-organic frameworks adsorbed surfaces are new class materials host quantum phases.