Synthesis, characterization and luminescence properties of Eu(III) and Tb(III) complexes with novel pyrazole derivatives and 1,10-phenanthroline.
Synthesis, characterization and luminescence properties of Eu(III) and Tb(III) complexes with novel pyrazole derivatives and 1,10-phenanthroline.
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DOI：
10.1016/j.saa.2009.12.006
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发表时间：
2010-02
期刊：
影响因子：
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通讯作者：
Feilong Hu;X. Yin;Yan Mi;Shan-shan Zhang;Wei-Qiang Luo
中科院分区：
文献类型：
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作者：
Feilong Hu;X. Yin;Yan Mi;Shan-shan Zhang;Wei-Qiang Luo
以3，6-二氯烟酸为原料合成了两种新型的吡唑类配体3-chloro-6-(3，5-dimethyl-1H-pyrazol-1-yl)picolinic酸(CDPA)和3-chloro-6-(3，5-dimethyl-1H-pyrazol-1-yl)-N-phenylpicolinamide(CDPP)。合成了它们与Tb(III)、Eu(III)的配合物。通过元素分析、红外光谱、核磁共振氢谱和TG-DTG对其进行了表征。此外，还合成了以1，10-二氮杂菲为第二配体的上述配合物，并对其进行了表征。研究了这些配合物的固态发光性质。结果表明，Tb(III)配合物的发光效率高于Eu(III)配合物，且以1，10-邻菲咯啉为二次配体的配合物的荧光强度明显强于不含该配体的配合物，三种配体(DCPA、CDPP和CDPA)对Eu(III)和Tb(III)离子具有很好的增敏作用。
Two novel pyrazole-derived ligands, 3-chloro-6-(3,5-dimethyl-1H-pyrazol-1-yl)picolinic acid (CDPA) and 3-chloro-6-(3,5-dimethyl-1H-pyrazol-1-yl)-N-phenylpicolinamide (CDPP) were prepared by 3,6-dichloropicolinic acid (DCPA). Their complexes with terbium(III) and europium(III) were synthesized. The complexes were characterized by elemental analysis, infrared spectra,1H NMR and TG–DTG. Furthermore, the above complexes using 1,10-phenanthroline as a secondary ligand were also synthesized and characterized. The luminescence properties of these complexes in solid state were investigated. The results suggested that Tb(III) complexes exhibit more efficient luminescence than Eu(III) complexes and the fluorescence of the complexes with 1,10-phenanthroline as a secondary ligand was prominently stronger than that of complexes without this ligand., and the three ligand (DCPA), (CDPP) and (CDPA) are excellent sensitizers to Eu(III) and Tb(III) ion.