一种新型稀土铕配合物的制备及荧光性能研究

Preparation and study on fluorescent property of a new type of europium complex

本文以2,6-二(4-乙氧基苯甲酰基)吡啶(L)和1,10-邻菲罗琳为配体,设计并制备了新型的稀土铕离子三元配合物EuL(Phen)2(Phen=1,10-邻菲罗啉),通过核磁共振氢谱和红外光谱对结构进行了表征。研究表明,配合物具有很好的溶剂化效应,溶液体系的荧光强度与溶剂的极性有关,极性越小体系荧光强度越大;固体配合物在593nm和620nm处有较强的Eu^(3+)特征发射峰,以620nm处的荧光强度最强,2处峰强度比值为4.57,配合物单色性较好,是一种具有很好的应用前景的红光材料。

A new type of three ternary Eu（Ⅲ）complex-EuL（Phen）2（Phen=1,10-phenanthroline）was prepared by 2,6-bis（4-ethoxybenzoyl）pyridine and 1,10-phenanthroline as ligand.The structure was characterized by 1 H-NMR and FT-IR.The fluorescence intensity of complex in different polar solvents and the fluorescence properties of complex were studied.The results showed that the fluorescence intensity of solution system was related to the polarity of the solvent,the lower polarity resulted in a higher fluorescence intensity.The solid complex had strong Eu3＋emission peaks at 593 nm and 620nm,and the fluorescence intensity of 620 nm was the best,the ratio of peak intensity was 4.57.And the complex had good monochromaticity,which can be used as eminent red light material.