The Luminescence Character of Eu Complexes with Derivatives of Benzoic Acid and Different Second Ligands

吕国伟
李勇
李卫华
徐怡庄
杜为民

Open link

Publication date

January 2003

DOI

10.3321/j.issn:1000-0593.2003.02.030

Publisher

光谱学与光谱分析

Journal

issn:1000-0593

Abstract

本文报道合成了八种苯甲酸及其一氯代衍生物与邻菲罗啉或联吡啶的稀土铕三元配合物并测得了荧光光谱.通过改变第一和第二配体,研究了配合物发光峰强度、位置和分裂间隔等的变化情况,依据荧光发射峰的分裂推断出Eu3+离子所处的局域环境对称性大致都是C1,C2或Cs.虽然配合物的局域对称性大致相同,但由于配体场作用和能级匹配等原因,发光峰位置和强度是不同的;讨论了第一配体分子结构的变化对荧光性能的影响,认为分子自身结构的对称性可能对提高配合物发光性能有较大影响;实验还观察到第二配体也参与配位且对发光性能影响较大.同时看到发光峰的分裂间隔大小变化和发光峰的相对强度的变化是一致的.Synthesize eight rare earth europium complexes with derivatives of benzoic acid and different second ligands. We obtained luminescence spectra of these complexes. Although their Eu3+ have about, local surrounding symmetry, luminescent intensities are different each other. Because of matching of energy level the complexes with phen is better than with bipy and through the variety structure of spectra show the complexity of Eu3+ hypersensitive transition.http://g...