含稀土铕(Ⅲ)配位聚合物的研究 Ⅰ.铕(Ⅲ)-噻吩甲酰三氟丙酮-聚(苯乙烯-丙烯酸)的结构表征

Study on the Eu-containing Coordination Polymer Ⅰ.Structural Characterization of Eu(Ⅲ)-thienyltrifluroacetone-poly (Styrene-acrylic acid)

研究了铕 (Ⅲ )和噻吩甲酰三氟丙酮 (HTTA)形成的有机配合物与聚 (苯乙烯 丙烯酸 )PSAA在不同pH值时发生配位反应得到配位聚合物NaEu(Ⅲ ) TTA PSAA的 3种样品 (a) ,(b) ,(c)。红外光谱、紫外光谱、X光电子能谱的测试表明了Eu3+ 分别与PSAA ,TTA- 发生配位。元素分析和电导率测定结果证明了配位组成和结构在不同的 pH条件下发生变化。结果表明 ,配合物试样 (a) ,(b) ,(c)中Eu3+ 的含量分别为11 89% ,12 5 5 % ,13 4 1%。

Three samples (a), (b) and (c) of luminescent Eu containing copolymer (NaEu(Ⅲ) TTA PSAA) were synthesized through the reaction of copolymer of acrylic acid and styrene (M w=3 000) with metalorganic complex (NaEu(TTA) 4) obtained from Eu and thienyltrifluroacetone. These samples of coordination polymers were characterized by FTIR, UV and XPS, and their composition and structures were determined. The results of electrical conductivity methods and elemental analysis indicated that there were different compositions and structures of these coordination polymers in different pH. The results of elemental analysis also showed that the content of Eu 3+ in sample (a), (b) and (c) was 11 89%, 12 55% and 13 41%, respectively.