Emergence of Metallic Conductivity in Ordered One-Dimensional Coordination Polymer Thin Films upon Reductive Doping

The prospect of introducing tunable electric conductivity in metal-organic coordination polymers is high interest for nanoelectronic applications. As the electronic properties these materials are strongly dependent on their microstructure, assembly into thin films with well-controlled growth direction and thickness crucial practical devices. Here, we report deposition one-dimensional (1D) polymer N,N'-dimethyl dithiooxamidato-copper by atomic/molecular layer deposition. High out-of-plane ordering observed resulting suggesting formation a well-ordered secondary structure parallel alignment 1D chains. We show that electrical highly oxidation state. as-deposited nearly insulating an below 10(-10) S cm(-1) semiconductor-like temperature dependency. Partial reduction H-2 at elevated leads to increase 8 orders magnitude. In high-conductance state, metallic behavior over range 2-300 K. Density functional theory calculations indicate originates from half-filled energy band intersecting Fermi level conduction pathway formed Cu-S-Cu interaction between neighboring