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

Abstract

A new metal–organic coordination polymer [Zn2(bpy)2(NO3)2(chdc)] (1; bpy = 4,4′-bipyridine, chdc2– = trans-1,4-cyclohexanedicarboxylate) was synthesized and characterized. This compound is based on the nitrate-capped binuclear {Zn2(Nbpy)4(NO3)2(OOCR)2} fragments interconnected by dicarboxylate moieties and π-stacked bpy dimers with ca. 3.53 Å 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%.