乙二胺N,N-二(4-乙酰胺苯甲酸)二乙酸配合物的合成、表征与性能研究  

SYNTHESIS,CHARACTERIZATION AND PROPERTIES OF COMPLEXES BASED ON LIGAND ETHYLENEDIAMINE-N,N-DI(4-ACETAMIDE BENZOIC ACID)-DIACETATE

作　　者：李佳[1,2] 郝志峰[3] 陈林渺[3] 刘文锋[3] 马肖依[3] 

机构地区：[1]华南师范大学教育科学学院,广东广州510631 [2]广东省教育考试院,广东广州510631 [3]广东工业大学轻工化工学院,广东广州510006

出　　处：《华南师范大学学报（自然科学版）》2011年第2期75-80,共6页Journal of South China Normal University(Natural Science Edition)

基　　金：广东省自然科学基金项目(06021469,10251009001000003);广东省科技计划项目(2009B011000012,2010B010800029)

摘　　要：通过乙二胺四乙酸二酐与对氨基苯甲酸的酰化反应合成了乙二胺N,N-二(4-乙酰胺苯甲酸)二乙酸(H4L),并以此为配体分别与稀土离子Sm3+、Gd3+、Eu3+和过渡金属离子Mn2+、Fe3+组装得到系列配合物.用红外光谱、紫外-可见光谱、元素分析及热重-差热分析对配合物进行了组成与结构表征的分析,配合物的组成为M(HL).3H2O(M=Sm3+,Eu3+,Gd3+,Fe3+)或者M(H2L).3H2O(M=Mn2+).配合物Gd(HL).3H2O的荧光发射光谱中没有离子特征谱图,而配合物Eu(HL).3H2O在618 nm处5D0→7F3跃迁的发射峰最强.配合物Gd(HL).3H2O的弛豫率为7.43 mmol/(L.s),体外弛豫性能明显提高.The ligand ethylenediamine-N,N-di（4-acetamide benzoic acid）-diacetate（H4L） is synthesized by acylation reaction of ethylenediamine tetraacetic acid dianhydride and p-amniobenzoic acid.A series complexes were prepared after the reaction of the ligand with rare earth ions Gd3＋,Sm3＋,Eu3＋ and transition metal ions Mn2＋,Fe3＋ respectively.The complexes were characterized by IR,UV-Vis,element analysis and TG-DTA.The results showed that the chemical composition of the complexes is confirmed to be M（HL）·3H2O（M=Sm3＋,Eu3＋,Gd3＋,Fe3＋）or M（H2L）·3H2O（M=Mn2＋）.The fluorescence emission spectra of the complexes were measured and investigated,there is no characteristic emission peak of ion in fluorescence emission spectrum for Gd（HL）·3H2O,while emission peak of 5D0→7F3 transition is the strongest at 618 nm for the complex Eu（HL）·3H2O.The longitudinal relaxivity R1 of Gd complex was 7.43 mmol/（L·s）,which was more greater than small molecular weight complex Gd-DTPA.

关 键 词：乙二胺四乙酸衍生物 配合物 荧光光谱 弛豫性能 

分 类 号：O623.626[理学—有机化学]