含Nd^(3+)聚合物的制备及其吸收光谱研究

Preparation of Nd 3+ Containing Polymer and Study on Its Absorption Spectroscopy

合成了三价钕的辛酸盐，制得了含辛酸钕的聚甲基丙烯酸甲酯甲苯溶液，采用本体聚合法制得含辛酸钕的聚甲基丙烯酸甲酯固态薄膜样品，测得它们中Ｎｄ３＋的吸收光谱，并将能级进行了归属，讨论了它们吸收光谱的差别并和无机玻璃中Ｎｄ３＋的吸收光谱进行了比较，指出了它们的不同并讨论了其原因，对Ｒａｎｃｈａ参量（Ｅ３），Ｌａｎｄｅ参量（ξ４ｆ），Ｎｅｐｈｅｌａｕｘｅｔｉｃｅｆｆｅｃｔ参量（β）和共价键因子（ｂ１／２）进行计算，并对配合物共价键的成键情况进行了讨论。

The necodymium octanoate[Nd(OA) 3] was synthesized and Nd(OA) 3 containing polymethyi methacrylate was prepared bypolymerization. The UV visible absorption spectra of Nd 3+ in variousmatrices were investigated. The energy levels for each sample were classified. The difference between their absorption spectra was foundand the reason for it was given. The values of Rancha (E 3)interelectronic repulsion and Lande parameter (ξ 4f ) spinorbit interaction parameters were computed from the spectral data. By using the data,the Nephlauxetic parameter (β), average bonding parameters (b 1/2 ) were evaluated which indicated the weeker covalent bonding between Nd 3+ and the chelate group in polymer matrix than that in inorganic glasses.