Luminescence properties of the co-luminescence groups of Sm-La-pyridyl carboxylic acids
来源期刊：JOURNAL OF RARE EARTHS2012年第4期
论文作者：保积庆 汤春花 杨正法 唐瑞仁
文章页码：320 - 324
摘 要：A novel ligand, N,N’-（2,6-pyridinedicarbonyl）bis[N-（carboxymethyl）] （L1） was designed and synthesized starting from pyri-dine-2,6-dicarboxylic acid （1）. The ligand （L1） and intermediate product （3） were characterized by 1H nuclear magnetic resonance （NMR）, Fourier transform infrared spectrometer （FT-IR） spectra and elemental analysis. Besides, four novel co-luminescence systems of Sm-La-pyridyl carboxylic acids: K4Sm（1-x）Lax（L1）Cl3·y1H2O, K12Sm2（1-x）La2x（L2）3 Cl6·y2H2O, K6Sm2（1-x）La2x（L3）Cl6·y3H2O and K4Sm（1-x）Lax（L4）Cl3·y4H2O （x was the mole fraction of La（III） in the mixed ions, the value was 0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, respectively; y1, y2, y3, y4 were plus integer） were studied, and the mechanism of fluorescence enhancement effect was discussed detailedly.
保积庆1，汤春花2，杨正法2，唐瑞仁2
1. Resources and Environment Technical Research Institute, Jiaxing University2. School of Chemistry and Chemical Engineering, Central South University
摘 要：A novel ligand, N,N’-（2,6-pyridinedicarbonyl）bis[N-（carboxymethyl）] （L1） was designed and synthesized starting from pyri-dine-2,6-dicarboxylic acid （1）. The ligand （L1） and intermediate product （3） were characterized by 1H nuclear magnetic resonance （NMR）, Fourier transform infrared spectrometer （FT-IR） spectra and elemental analysis. Besides, four novel co-luminescence systems of Sm-La-pyridyl carboxylic acids: K4Sm（1-x）Lax（L1）Cl3·y1H2O, K12Sm2（1-x）La2x（L2）3 Cl6·y2H2O, K6Sm2（1-x）La2x（L3）Cl6·y3H2O and K4Sm（1-x）Lax（L4）Cl3·y4H2O （x was the mole fraction of La（III） in the mixed ions, the value was 0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, respectively; y1, y2, y3, y4 were plus integer） were studied, and the mechanism of fluorescence enhancement effect was discussed detailedly.
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