Acta Phys. -Chim. Sin. ›› 2016, Vol. 32 ›› Issue (4): 901-906.doi: 10.3866/PKU.WHXB201602173

• ARTICLE • Previous Articles     Next Articles

Synthesis, Characterization, Thermal Decomposition Mechanism and Properties of the [Eu(4-MOBA)3(terpy)(H2O)]2 Complex

Jian-Xia HUO1,2,Su-Wei SONG4,Cheng-Wei JIN1,2,Ning REN3,*(),Li-Na GENG2,Jian-Jun ZHANG1,2,*()   

  1. 1 Testing and Analysis Center, Hebei Normal University, Shijiazhuang 050024, P. R. China
    2 College of Chemistry & Material Science, Hebei Normal University, Shijiazhuang 050024, P. R. China
    3 College of Chemical Engineering & Material, Handan University, Handan 056005, Hebei Province, P. R. China
    4 Petro China Jingtang LNG Co., Ltd., Tangshan 063210, Hebei Province, P. R. China
  • Received:2015-12-29 Published:2016-04-07
  • Contact: Ning REN,Jian-Jun ZHANG;
  • Supported by:
    the National Natural Science Foundation of China(31201305, 21473049);Natural Science Foundation of Hebei Province, China(B2016205207)


A new complex [Eu(4-MOBA)3(terpy)(H2O)]2 (4-MOBA: 4-methoxybenzoate, terpy: 2, 2' :6', 2"-terpyridine) was synthesized. The complex was characterized using Fourier transform infrared (FTIR) spectroscopy, elemental analysis, and powder X-ray diffraction (XRD). The structure of the complex was determined using single-crystal XRD. In the complex, each Eu3+ ion is nine coordinated to one terpy molecule, one water molecule and three carboxylate groups. The carboxylate groups are bonded to the Eu3+ ion in three modes: bidentate, bridging bidentate, and monodentate. Based on thermogravimetry-differential scanning calorimetry/Fourier transform infrared (TG-DSC/FTIR) measurements, we determined the thermal decomposition mechanism. The emission spectra of the complex exhibited characteristic luminescence, suggesting that terpy and 4-methoxybenzoic acid can act as sensitizing chromophores in this system. Also, bacteriostatic activities for the complex to Candida albicans and Escherichia coli are discussed.

Key words: Lanthanide complex, Crystal structure, Thermal decomposition mechanism, Luminescence, 2, 2':6', 2"-Terpyridine, Antimicrobial activity