Chem. J. Chinese Universities ›› 2014, Vol. 35 ›› Issue (8): 1620.doi: 10.7503/cjcu20140302

• Articles: Inorganic Chemistry • Previous Articles     Next Articles

Syntheses, Structures and Photophysical Properties of a Series of Sm3+ Coordination Complexes

CHI Yuxian, QIU Juqing, LI Shumei, YANG Yanhong, JIN Jing, NIU Shuyun*()   

  1. School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, China
  • Received:2014-04-02 Online:2014-08-10 Published:2019-08-01
  • Contact: NIU Shuyun E-mail:syniu@sohu.com
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.21133005) and the Project of Liaoning Provincial Education Department, China(No.L2011193)

Abstract:

Four new Sm3+ coordination complexes, {[SmZn(2,5-pdc)2(tpha)0.5(H2O)]·2H2O}n(1), [Sm2Zn2(C6H5COO)10(Imh)2(H2O)2](2), {[Sm2(NO2C6H4COO)6(H2O)4]·H2O}n(3) and {[SmN(CH2COO)3(H2O)2]·H2O}n(4)[2,5-pdc=pyridine-2,5-dicarboxylate, tp=p-phthalate, C6H5COO=benzoate, Imh=imidazole, NO2C6H4COO=p-nitrobenzoate, N(CH2COO)3=nitrilotriacetate], were synthesized by hydrothermal method. Their structures were determined by single-crystal X-ray diffraction. At room temperature, the IR, UV-Vis-NIR and emission spectra of the four complexes were measured and analyzed. The four complexes exhibit the characteristic emission bands of the Sm3+ ion in the visible or NIR region, which should be attributed to the sensitization from the Zn-ligand(d-block) and ligands after forming coordination complexes. In addition, the sensitization from different ligands and d-block to Sm3+ ion was discussed, the shift, split and broad of the NIR emission bands were analyzed.

Key words: Sm3+ coordination complex, Crystal structure, Luminescent property

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