Zn(II) coordination polymer with p-stacked 4,4′-bipyridine dimers: Synthesis, structure and luminescent properties

A new metal-organic coordination polymer [Zn-2(bpy)(2)(NO3)(2)(chdc)] (1; bpy = 4,4'-bipyridine, chdc(2-) = trans-1,4-cyclohexanedicarboxylate) was synthesized and characterized. This compound is based on the nitrate-capped binuclear {Zn-2(N-bpy)(4)(NO3)(2)(OOCR)(2)} fragments interconnected by dicarboxylate moieties and pi-stacked bpy dimers with ca. 3.53 angstrom interplanar distance to form a two-dimensional (2D) sql network. Thermal and luminescent properties of 1 were investigated. Under excitation from 320 nm to 480 nm, the named compound demonstrates wide-banded yellow emission with the red shift of the maximum from 562 nm to 596 nm, and quantum yields up to 6.7%.

Automated summary

A new metal-organic coordination polymer was synthesized and characterized. The compound exhibits a two-dimensional structure and its thermal and luminescent properties were investigated.