摘要
将铽的有机配合物NaTb(TTA) 4与聚丙烯酸反应获得铽配位聚合物 (Tb TTA PAA)。此配位聚合物是褐色固体 ,不溶于大部分有机溶剂 ,只能溶于丙三醇和异丙醇的混合溶剂。采用红外光谱、紫外光谱、X射线光电子能谱、电导率、元素分析和荧光光谱等手段对其结构进行表征 ,确定其配位组成和结构即每个铽离子分别与一个TAA- 离子和PAA分子中二个链节羧基发生配位 ,得到该配合物的结构。Tb3+ 离子在配合物Tb TTA PAA中含量为 2 9.98%。荧光光谱表明 ,常温下配合物在紫外光下发出强荧光 ,主要是Tb离子的5D4 →7F5的能量传递。
The coordination polymer (Tb-TTA-PAA) was formed by the reaction of metalorganic complex (NaTb(TTA) 4) with polyacrylic acid ( M w=5000). The coordination polymer, which is insoluble in most organic solvents, is a brown solid, but it is soluble in the mixed solvent of glycerol alcohol and isopropanol. The coordination polymer was characterized by FT IR, UV spectrography, and its composition and the structure were determinated. The result of electrical conductivity method and elemental analysis indicate that each Tb 3+ ion is coordinated with one TTA - ion and carboxyl from two units in the PAA molecule. The Tb 3+ content coordination polymer with reachs up to 29.98%. The Tb copolymer luminophores exhibite intense light at 545 nm under UV excitation at room temperature, which is attributed to the 5D 4→ 7F 5 transition of Tb 3+ ions.
出处
《中国稀土学报》
CAS
CSCD
北大核心
2002年第3期234-239,共6页
Journal of the Chinese Society of Rare Earths
基金
福建省自然科学基金资助项目 (E9910 0 16)
