系列Sm^(3+)配合物的合成、结构及光物理性能  

Syntheses,Structures and Photophysical Properties of a Series of Sm^(3+) Coordination Complexes

作　　者：迟玉贤[1] 邱菊青[1] 李淑梅[1] 杨艳红[1] 金晶[1] 牛淑云[1] 

机构地区：[1]辽宁师范大学化学化工学院,大连116029

出　　处：《高等学校化学学报》2014年第8期1620-1628,共9页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:21133005);辽宁省教育厅一般项目(批准号:L2011193)资助~~

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,NO2C6H4COO=对硝基苯甲酸根,N(CH2COO)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.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.

关 键 词：Sm3+配合物 晶体结构 发光性能 

分 类 号：O614.33[理学—无机化学]