Synthesis and characterization of a novel three-dimensional photoluminescent coordination polymer generated from unsymmetrically bridging ligand

A novel three-dimensional metal-organic coordination polymer, [Zn2(HBTC)2(H2O)3]n (1) (BTC=1,2,4-benzenetricarboxylate), has been prepared by aqueous solution reaction of Zn(NO3)2 · 6H2O and BTC at moderate temperature and characterized by IR, TGA and single-crystal X-ray diffraction analysis. The three-dimensional architecture of 1 not only possesses rectangular cavities but also has ordered one-dimensional straight channels. Furthermore, compound 1 shows intense photoluminescent property at room temperature.