对-苯二甲酸邻菲罗啉铕镧配合物的红外光谱及荧光光谱研究

Study on Infrared and Fluorescence Spectra of Eu(La) Complexes with o-Phenanthroline and p-Phthalic Acid

用对 苯二甲酸铵和邻菲罗啉与氯化铕和氯化镧在乙醇 水溶液中反应 ,合成了对 苯二甲酸邻菲罗啉铕镧异核稀土配合物 ,测定了配合物的C ,H ,N和稀土元素的含量、红外光谱、紫外光谱及荧光光谱 ,确定了配合物的组成。结果表明 ,羧基氧和邻菲罗啉氮原子均与稀土离子配位 ,桥联配体对 苯二甲酸根可有效的传送能量 。

A series of Eu 3+ (La 3+ ) complexes of phen and p phthalic acid were synthesized respectively. Their IR absorption spectra, UV absorption and fluorescence spectra were studied. The results show that the oxygen atoms from p phthalic acid and nitrogen atoms from phen coordinate to the rare earth ions in the complexes. The fluorescence emission of Eu 3+ ion can be greatly enhanced, if some of the europium ions in the complexes were substituted by lanthanum ions.