N,N,N-三(2-甲基苯并咪唑)胺及其稀土配合物的合成与荧光性质研究

Synthesis and Fluorescence Propereies of N,N,N-tris(2-benzimidazolmethyl)Amine and Its Rare Earth Complexes

为了考察三脚架配体及其稀土配合物的配位形式和性质,从而为进一步研究其荧光性质、生物活性提供依据,以氨三乙酸为母体合成了N,N,N-三(2-甲基苯并咪唑)胺及其稀土配合物(La3+,Sm3+,Y3+,Tb3+,Ce3+,Eu3+).通过红外、核磁共振、差热-热重、紫外及荧光等分析手段研究了配体及其配合物的结构关系和荧光性质.研究表明,该类配体是较好的主体分子,能够与稀土离子发生配位,形成配合物,配合物内界的NO3-以双齿形式与中心离子配位;配合物热稳定性好,具有较好的荧光性质,特别是Tb3+配合物是高效的稀土有机发光配合物,可用于荧光材料的研究.

To study the coordinating form and properties of tripod ligands and its rare earth complexs, and further provide theoretical basis of its fluorescence and biological reactive, N, N, N-tris （2- benzimidazolmethyl）amine was synthesized from Nitrilotriacetic acid, and its complexes with some rare earth metal ions including La^3＋, Sm^3＋, Y^3＋ Tb^3＋ Ce^3＋ Eu^3＋ was prepared. Their structure and fluorescence properties were characterized by IR, NMR, DTA-TG, UV and Fluorescence spectra. The results showed that N, N, N-tris （2-benzimidazolmethyl） amine is an excellent host-molecular, it can coordinated with rare earth metal ions NO3^- coordinated with the central cations using bidentate. The complexes have some advantages such as good thermal stability and excellent Fluorescence properties, especially Tb^3＋ complexe is a high performance rare earth organic luminescence complexes and can be used as fluorescence materials.