4-[(1,3-二氧代丁基)氨基]苯甲酸稀土配合物的合成、表征及发光性质  

Synthesis,Characterization and Fluorescent Properties of Rare Earth Complexes from 4-[(1,3-Dioxobutyl)amino]benzoic Acid

作　　者：鲁雅 武大令 方识耘 冯雨婷 赵国良[1,2] Lu Ya;Wu Daling;Fang Shiyun;Feng Yuting;Zhao Guoliang(Xingzhi College Zhejiang Normal University,Jinhua 321004,China;College of Chemistry and Life Science,Zhejiang Normal University,Jinhua 321004,China)

机构地区：[1]浙江师范大学行知学院,浙江金华321004 [2]浙江师范大学化学与生命科学学院,浙江金华321004

出　　处：《中国稀土学报》2020年第1期69-75,共7页Journal of the Chinese Society of Rare Earths

基　　金：浙江省自然科学基金项目(LY12B01003)资助。

摘　　要：在乙醇体系中,由主配体4-[(1,3-二氧代丁基)氨基]苯甲酸(H2L,C11H11NO4)、稀土硝酸盐及辅助配体邻菲啰啉(phen)反应合成了两个系列8个配合物[Ln2(L)3(H2O)4]n(Ln=Sm(1),Eu(2),Tb(3),Dy(4));[Ln2(NO3)2(L)2(phen)2]n(Ln=Sm(5),Eu(6),Tb(7),Dy(8))。用元素分析、红外光谱、摩尔电导、热重分析进行表征,确定了产物的化学组成,推断了相应的结构。测定了室温时固体产物的激发和发射光谱,结果表明:由主辅配体共同配位的三元配合物的发光强度好于无辅助配体参与的二元配合物。测定了三元配合物的荧光寿命,其中铕和铽配合物显示较长的荧光寿命。Eight rare earth complexes were synthesized by solution method using 4-[(1,3-dioxobutyl)amino]benzoic acid(H2L,C11H11NO4),rare earth nitrate salts Ln(NO3)3·6 H2O and 1,10-phenanthroline(phen).They were binary complexes[Ln2(L)3(H2O)4]n(Ln=Sm(1),Eu(2),Tb(3),Dy(4))and ternary complexes[Ln2(NO3)2(L)2(phen)2]n(Ln=Sm(5),Eu(6),Tb(7),Dy(8)).The complexes were characterized by elemental analysis(EA),molar conductance,infrared spectroscopy(IR)and thermogravimetric analysis(TG).The compositions of the complexes were preliminarily determined and their possible structures were deduced.The excitation and emission spectra of the solid products at room temperature were measured.The results showed that the ternary complexes co-coordinated by the primary and secondary ligands have better luminescence intensity than the binary complexes without the auxiliary ligands.

关 键 词：稀土 4-[(1 3-二氧代丁基)氨基]苯甲酸 配合物 发光性质 

分 类 号：O641.3[理学—物理化学] O641.4[理学—化学]