镧系(Eu^(3+),Tb^(3+))-β-二酮—醋酸纤维素荧光膜的制备与性质  

Preparation and Properties of Ln(Ⅲ)-β Diketone-Acetyl Cellulose Fluorescence Membrane

作　　者：杨武[1,2] 高锦章[1,2] 康敬万 李存雄[1,2] 

机构地区：[1]西北师范大学化学化工学院 [2]贵州师范大学化学系

出　　处：《稀土》1998年第1期10-14,共5页Chinese Rare Earths

摘　　要：制备了含稀土（Ｌｎ＝Ｅｕ，Ｔｂ）－β－二酮配合物的高分子醋酸纤维素（ＡＣ）聚合荧光膜，研究了膜的荧光性质，金属含量与膜透明度之间的关系。结果指出，在膜材料中，醋酸纤维素也参与了向中心离子的能量传递过程。含Ｅｕ－ＤＢＭ及Ｔｂ－ＴＴＡ配合物的膜荧光最强。Fluorescence membrane containing complexes of Ln(Ⅲ)-β-diketone(Ln=Eu or Tb)dispersed in acetyl cellulose(AC) polymer matrix was prepared.The relationship between Ln(Ⅲ) content and fluorescence intensities or transparencies of membranes was investigated and energy transfer from acetyl cellulose and β-diketone to Ln(Ⅲ) in the membrane was also discussed.The influence of substituting group of the ligand on spectroscopic properties and fluorescence intensity was also given.The strongest red and green fluorescence was respectively observed when dibenzoylmethane(DBM) was used as a ligand for Eu-membrane system and 2-thenoyl-trifluoroacetone(TTA) for Tb-membrane system.

关 键 词：农膜 稀土 Β-二酮 醋酸纤维素 荧光膜 铕 铽 

分 类 号：O614.33[理学—无机化学] S625.2[理学—化学]