A New 2D Europium(III) Coordination Polymer Based on 4-Bromoisophthalate Ligand: Synthesis, X-ray Structure, Luminescent and Magnetic Properties

作者：Ma, Deyun^*; Wang, Jun; Qin, Liang; Guo, Haifu; Li, Shujun; Huang, Manfei; Liu, Huimin; Wang, Yifei; Xie, Rui; Sakiyama, Hiroshi; Xu, Jun^*

来源：Journal of Inorganic and Organometallic Polymers and Materials, 2017, 27(5): 1514-1520.

DOI：10.1007/s10904-017-0611-z

• Europium(III) complex
• 4-Bromoisophthalate
• Crystal structure
• Luminescent properties
• Magnetic properties
• In vitro MTT assays

A new 2D europium coordination polymer, {[Eu-2(Bript)(3)(H2O)(2)]center dot 2(H2O)}(n) (1) [H(2)Bript = 4-bromoisophthalic acid], was prepared by hydrothermal synthesis and characterized by IR spectroscopy, elemental analysis, thermogravimetric analysis, powder X-ray diffraction and single-crystal X-ray diffraction. The carboxylate oxygen atoms of Bript ligands link the neighboring Eu(III) ions to form a Eu(III)-carboxylate chain with the Eu center dot center dot center dot Eu separations of 3.982 and 5.585 angstrom, which the chains are further extend into a two-dimensional network. The 3D fluorescence spectra of 1 were detected at room temperature under the excitation and emission wavelengths range of 250-450 and 420-750 nm with the same interval of 5 nm, respectively. The lifetime of 1 in solid-state at room temperature is up to 0.935 ms. The magnetic result shows an antiferromagnetic coupling between the paramagnetic metal cations. Moreover, in vitro MTT assays at different concentrations of 1 have also been investigated and the results reveal that complex 1 was low cytotoxic.

• 出版日期2017-9
• 单位肇庆学院; 暨南大学