中文摘要：

采用水热方法合成了4种 Sm3＋配合物,即{[SmZn（2,5-pdc）2（tp）0.5（H2O）]·2H2O}n（1）,[Sm2Zn2（C6H5COO）10（Imh）2（H2O）2]（2）,{[ Sm2（ NO2C6H4COO ）6（ H2O ）4]· H2O}n （3）和{[SmN（CH2COO）3（H2O）2]·H2O}n（4）[2,5-pdc=2,5-吡啶二羧酸根, tp=对苯二甲酸根, C6H5COO=苯甲酸根, Imh=咪唑, NO2 C6 H4 COO=对硝基苯甲酸根, N（ CH2 COO）3=氨三乙酸根].通过单晶X射线衍射确定了其晶体结构.在室温下测定了其红外光谱、紫外-可见-近红外光谱以及在近红外区和可见区的发射光谱.结果表明,4种配合物在近红外区或可见区均出现Sm3＋离子的特征发射.这是形成配合物后, Zn-配体部分和配体对Sm3＋离子发光的敏化作用所致.此外,讨论了不同有机配体或d过渡金属离子对Sm3＋离子发光的影响,并分析了配合物中Sm3＋离子的近红外发射带位移、劈裂和加宽的原因.

英文摘要：

Four new Sm3＋ coordination complexes, {[SmZn（2,5-pdc）2（tpha）0.5（H2O）]·2H2O}n（1）, [Sm2Zn2（C6H5 COO）10（Imh）2（H2O）2] （2）, {[Sm2（NO2C6H4COO）6（H2O）4] ·H2O}n（3） and{[SmN（CH2COO）3（H2O）2]·H2O}n（4） [ 2, 5-pdc = pyridine-2, 5-dicarboxylate, tp = p-phthalate, C6 H5 COO=benzoate, Imh=imidazole, NO2 C6 H4 COO=p-nitrobenzoate, N （ CH2 COO ） 3=nitrilotriacetate ] , were synthesized by hydrothermal method. Their structures were determined by single-crystal X-ray diffraction. At room temperature, the IR, UV-Vis-NIR and emission spectra of the four complexes were measured and ana-lyzed. The four complexes exhibit the characteristic emission bands of the Sm3＋ ion in the visible or NIR region, which should be attributed to the sensitization from the Zn-ligand（ d-block） and ligands after forming coordination complexes. In addition, the sensitization from different ligands and d-block to Sm3＋ ion was dis-cussed, the shift, split and broad of the NIR emission bands were analyzed.