掺Nd^（3＋）和掺Tb^（3＋）聚合物的光谱特性研究

Study on Spectroscopy of Nd￣(3+) doped and Tb￣(3+) doped Polymers

合成了含钕离子（Ｎｄ３＋）和铽离子（Ｔｂ３＋）的聚甲基丙烯酸甲酯体材料．分析了两种聚合物在室温下的光吸收和光发射特性．结果表明随着稀土离子含量的增加，其吸收光谱出现红移现象．在紫外光的激发下，含Ｔｂ３＋聚合物可以获得５４５ｎｍ绿光和４９０ｎｍ的蓝光，而含Ｎｄ３＋聚合物的受激发射仅出现在３７０ｎｍ左右的紫外区域．

d3+ and Tb3+ containing polymetyl methacrylate have been synthesised by bulk polymerization through the mechanism of free radical polymerization and the study on the excitation and emission spectra of the polymers is performed at room temperature.The result shows that the emissions appear at 545nm and 490nm for Tb3+ containing polymer and at 370nm for Nd3+ containing polymer.The relationship between the emissions and the energy level of two kinds of ions in the free state is discussed.