Solvothermal Synthesis, Crystal Structure and Photoluminescence Property of a 3D Lead（Ⅱ） Coordination Polymer Based on Terephthalic Acid

林小英杨攀陈君刘明华林诚

School of Chemical Engineering,Fuzhou University College of Ecological Environment and Urban Construction,Fujian University of Technology College of Environment and Resources,Fuzhou University

摘要：Solvothermal reaction of Pb（NO₃）₂·6H₂O with rigid linear ligand terephthalic acid（H₂pta） in N,N-dimethylformamide（DMF） produced a new three-dimensional（3D） lead（Ⅱ）coordination polymer[Pb₂（pta）_1.5（μ4-OH）（DMF）]_n 1,and its structure was characterized by single-crystal X-ray diffraction analyses.In polymer 1,the μ₄-OH bridges the nearby lead（Ⅱ） ions into an infinite one-dimensional（1D） chain,and then the organic ligand pta^2- joins the neighbored chains into a 3D structure by two similar connection modes in different configurations.The solid-state photoluminescent studies revealed that 1 exhibits a strong greenish emission mainly originating from ligand-to-metal charge transfer between the delocalized π bonds of the aromatic carboxylate ligand pta^2- and the p orbitals of the Pb²⁺ centers.

基金资助：

supported by the Natural Science Foundation of Fujian province（2015J01033）； Industry-University Cooperation Key Project of Science and Technology of Fujian Province（2012H6002）；