A 3D Cd(II)-organic coordination polymer demonstrating selective sensing of Zn2+ ion and nitrobenzene

A 3D Cd(II)-organic coordination polymer composed of Cd(II) clusters and btdc ligands was constructed, in which trinuclear Cd(II) clusters are connected by btdc ligands to form a 2D (4, 4) layer. The adjacent 2D layers are stacked via AA mode to generate a 3D framework. The Cd(II) complex displays strong fluorescent emission both in the solid state and in methanol suspension at room temperature. In addition, the fluorescent of this complex can be enhanced by adding Zn2+ ions and quenched by adding nitrobenzene. Such phenomenon can be applied for Zn2+ ions or nitrobenzene selective sensing.121