中文摘要：

以3,3＇,4,4＇-联苯四甲酸二酐（BPDA）为配体原料合成了两种碱式铕和铽配合物,通过元素分析、红外光谱和热重分析等测试技术表征了配合物的结构组成,用紫外光谱和荧光光谱研究了配合物的发光性能。结果表明：两种配合物的组成分别为Tb5L3（OH）3.8H2O和Eu5L3（OH）3.10H2O（L=BPDA）,稀土铕（Ⅲ）和铽（Ⅲ）与羧酸根的配位方式主要以桥式配位为主,兼有少量螯合配位。这些配合物的热稳定性能良好。铽配合物和铕配合物均呈现红色荧光,铽配合物归属于5D4→7F3跃迁（613 nm）的荧光寿命为491.11μs,归属于5D4→7F5跃迁（544 nm）的荧光寿命为27.9μs;铕配合物归属于5D0→7F2跃迁（613 nm）的荧光寿命为329.5μs,荧光量子产率为13.05%。

英文摘要：

Two novel rare earth（Eu,Tb） binary complexes with 3,3′,4,4′-Biphenyl tetracarboxylic as the ligand were synthesized and characterized by elemental analysis,FT-IR,TG-DTG.The compositions of the complexes were found to be Tb5L3（OH）3·8H2O and Eu5L3（OH）3·10H2O（L=BPDA）.There are two coordination modes of the carboxylate ligands in the complexes.Most of them are in bridging mode with BPDA linked to two rare earth ions,the others are in chelating mode with BPDA chelated to the same rare earth ion.These novel rare earth complexes have good thermal stability.Their photophysical properties were further investigated by UV absorption spectra and fluorescence spectra.The results indicate that both of the terbium and europium complexes exhibit red fluorescence.The fluorescence lifetime of the 5D4→7F3 transition（613 nm） for Tb（Ⅲ） complex is 491.1μs,which is longer than that of the 5D4→7F5 transition（544 nm,27.9 μs）.The fluorescence lifetime of the 5D0→7F2 transition（613 nm） for Eu（Ⅲ） complex is 329.5 μs.The fluorescence quantum yield of Eu（Ⅲ） complex is 13.05%.