羧甲基壳聚糖与铕、铽配合物的合成和配位机理研究

Synthesis and Coordination Mechanism of Coordination Compounds of Carboxylmethyl Chitosan with Eu(NO_3)_3 and Tb(NO_3)_3

用羧甲基壳聚糖分别与硝酸铕和硝酸铽反应,制备了羧甲基壳聚糖-铕和羧甲基壳聚糖-铽稀土配合物。用红外光谱和X射线光电子能谱(XPS)等分析测试手段对配合物进行表征。对配合物配位机理进行了初步的研究,配合物中羧甲基壳聚糖中不仅羧基参与了配位,氨基上的N原子和羟基氧原子也参与了配位。

The coordination compounds were synthesized from earhoxymethyl chitasan with Eu（NO3）3 and Tb （NO3）3, and were characterized by IR and X-ray photoelectron spectroscopy, respectively. Its coordination mechanism was also investigated. The results showed that rare earth ion was coordinated with --NH2 ,--OH ,--COOH of carboxymethyl chitosan.