HDBA-AM-铕配合物的合成、结构表征及荧光性能的研究

Synthesis,characterization and fluorescence properties of the complex europium-p-hydroxybenzoic acid-acrylic amide

在无水乙醇中,以对羟基苯甲酸(HDBA)和丙烯酰胺(AM)为配体,合成铕-对羟基苯甲酸-丙烯酰胺三元稀土配合物。通过元素分析、EDTA配位滴定分析、红外、紫外、热分析和荧光光谱分析测定三元配合物的组成、结构、热稳定性和发光性能,结果表明,对羟基苯甲酸中的羧基以桥联方式与铕发生配位,HDBA与稀土离子之间的能量传递是主要过程,配合物的最大吸收与HDBA相比略有红移;在214 nm波长激发下,三元配合物在619 nm和592 nm处均能发出较强的特征荧光。

A Eu3 ＋-HDBA-AM ternary complex with ligands p-hydroxybenzoic acid （HDBA） and acrylic amide （AM） in the pure ethanol solution was synthesized. The complex was characterized by using the elemental analysis, ethylene diamine tetraacetie （EDTA） complerometric titration analysis, FT-IR, UV-Vis spectroscopy, thermal gravimetric analysis （TGA） and fluorescence spectroscopy in order to describe the constitute, structure, heat stability and fluorescence property. The results showed that carboxyl functional group in HDBA bonded with europium and the energy transfer process occurred mainly from HDBA to the central rare-earth ion. The maximal absorption wavelength of complex shifted red compared to HDBA. The synthesized ternary complex emitted characteristic fluorescence at 619nm and 592nm in the emission wavelength 214nm, and would be used as new organic light-emitting devices （OLEDS） and luminescence paint.