Preparation and Luminescence Properties of a Europium Complex
In this paper,a novel europium complex[Eu(2,6-Hpdc)3(H2O)2(PEA)2]was prepared by solvent evaporation method at room temperature using 2,6-pyridine dicarboxylic acid(2,6-H2pdc),β-phenethylamine(PEA)and rare earth ion Eu(Ⅲ)asraw materi-als.The title complex was characterized and analyzed by XRD,TGA,single crystal X-ray diffraction and fluorescence spectrum.The results showed that the simulated X-ray diffraction was in good agreement with the experimental PXRD,which confirmed that the synthesized sample had high phase purity.The thermogravimetric analysis result showed that the complex had good thermal stability.The fluorescence spectra of this complex showed stable and strong luminescence.The complex exhibited excellent fluorescence on/off characteristics under the acid/base vapor environment,showing that it may be used as anti-counterfeiting ink.This complex has great potential in the field of anti-counterfei-ting.
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