对称吡啶双酰胺及其稀土配合物的合成、表征与荧光性质的研究

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以元素分析、红外光谱、差热及核磁进行表征了配体及其五种稀土(La^3+,Eu^3+,Tb^3+,Gd^3+,Yb^3+)配合物,确定了其组成,研究了部分配合物的固态荧光.同时以低温磷光光谱确定了配体的三重态能级为22989 cm^-1,研究了配体与稀土离子的能级匹配情况,详细讨论了配合物的发光性能.结果发现,铽配合物能发出很强的特有荧光,而铕配合物所发荧光很弱,说明配体L与Tb^3+ 的^5D4匹配.对于Tb^3+而言,当2000 cm^-1〈ΔE(T-^5D4)〈3000 cm^-1时,稀土铽离子发出强
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