A New Hybrid with Alkali Metal-Organic Framework Accommodating Polymeric Iodoargentate: Structure, and Photocurrent Responses

A new hybrid containing alkali metal-organic framework and polymeric iodoargentate, {[K(bpdo) 2 ](AgI 2 )} n ( 1 ) (bpdo = 4,4'-dipyrdiyl-N,N'-dioxide) has been synthesized by solution process and structurally determined, which is the first potassium-based 3-D network constructed from linear bpdo ligands and also serves as host for accommodating 1-D polymeric (AgI 2 ) n n− chains. The 3-D [K(bpdo) 2 ] n n+ metal-organic framework can be described as the result of bridged [K(bpdo) 2 ] n n+ 2-D sheets by KO 8 square antiprisms, in which electrostatic interaction among bpdo ligands solidifies this network. The straight-linear (AgI 2 ) n n− is constructed from edge-sharing of AgI 4 tetrahedra, which is accommodated in the channels of 3-D [K(bpdo) 2 ] n n+ network. This hybrid is a semi-conductor with optical gap of 2.80 eV. Besides, 1 exhibits effective and repeatable photocurrent responses with current density of 1.40×10 − 7 A, and the photocurrent response mechanism was also discussed.