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Luminescence Properties of Inert lanthanide ion Doped Europium Complexes with 2-Pyrazinecarboxylic Acid and Butanedioic Acid

机译:惰性镧系离子掺杂的2-吡嗪羧酸和丁二酸Euro配合物的发光特性

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Nine europium complexes with 2-pyrazinecarboxylic acid (Hpyca) and butanedioic acid (HBDA) were synthesized and characterized by elemental,IR,EDTA titration,ICP,and TG-DSC analyses.The results show that the complexes have the compositions of Eu(Pyca)(BDA)·2H2O,Eu0.7La0.3(Pyca)(BDA)· 2H2O,Eu0.6La0.4(pyca)(BDA).3H2O,Eu0.5La0.5(pyca)(BDA)·4H2O,Eu0.7Y0.3(Pyca)(BDA)· 3H2O,Eu0.6Y0.4 (Pyca)(BDA)·2H2O,Eu0.5Y0.5(Pyca)(BDA)· 3H2O,Eu0.7Gd0.3(Pyca)(BDA)·2H2O and Eu0.5Gd0.5(Pyca)(BDA)·2H2O.IR spectra indicate that lanthanide ions coordinate with the carboxylic oxygen atoms and nitrogen atoms of Hpyca and oxygen atoms of HBDA.Luminescence spectra show that the introduction of La3+,y3+ or Gd3+ in the complexes does not change the luminescence peak position,but remarkably increases luminescent intensity of the europium complexes.The quantum yields of the complexes doped with inert lanthanide ions (La3+,Y3+ or Gd3+) are higher than that of the undoped europium complex.Furthermore,doping the inert lanthanide ions in right proportion can increase the luminescence lifetimes of complexes.Those complexes are of strong luminescence,low cost and practical value.
机译:通过元素,IR,EDTA滴定,ICP和TG-DSC的分析,合成了9种带有2-吡嗪甲酸(Hpyca)和丁二酸(HBDA)的euro络合物,并对其进行了表征。结果表明该络合物具有Eu(Pyca)的成分)(BDA)·2H2O,Eu0.7La0.3(Pyca)(BDA)·2H2O,Eu0.6La0.4(pyca)(BDA).3H2O,Eu0.5La0.5(pyca)(BDA)·4H2O,Eu0 .7Y0.3(Pyca)(BDA)·3H2O,Eu0.6Y0.4(Pyca)(BDA)·2H2O,Eu0.5Y0.5(Pyca)(BDA)·3H2O,Eu0.7Gd0.3(Pyca)( BDA)·2H2O和Eu0.5Gd0.5(Pyca)(BDA)·2H2O.IR光谱表明,镧系离子与Hpyca的羧基氧原子和氮原子以及HBDA的氧原子配位。发光光谱表明引入了La3 +络合物中的,y3 +或Gd3 +不会改变发光峰的位置,但会显着提高the络合物的发光强度。掺有惰性镧系离子(La3 +,Y3 +或Gd3 +)的络合物的量子产率高于未掺杂的镧系离子。 complex络合物。此外,掺杂惰性气体适当比例的阴离子可增加配合物的发光寿命。这些配合物发光强度高,成本低,具有实用价值。

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