【作者】 宝金荣；

【导师】 赵永亮；

【作者基本信息】 内蒙古大学 ， 无机化学， 2005， 硕士

【摘要】 本文合成并表征了稀土高氯酸盐与2-噻吩甲酸（C₄H₃SCOOH）的十种二元固态配合物及稀土高氯酸盐与2-噻吩甲酸、2,2’-联吡啶的四种三元固态配合物。经元素分析、摩尔电导及差热-热重分析,表明配合物组成分别为:REL₃·2H₂O（RE=Y,La,Pr,Nd,Sm,Eu,Gd,Tb,Dy,Er）及REL₃L’·C₂H₅OH（RE=Sm,Eu,Tb,Dy;L=2-噻吩甲酸,L’=2,2’-联吡啶）。 红外光谱及核磁共振氢谱测定表明,配体2-噻吩甲酸以羧基氧与稀土离子配位,配体2,2’-联吡啶以两个氮原子与稀土离子配位。在DMF溶液中测定的摩尔电导率,其结果表明配合物为非电解质。配合物的荧光光谱表明,配体对稀土铕（Ⅲ）、铽（Ⅲ）的荧光具有很强的敏化作用。另外,三元配合物中,2,2’-联吡啶的掺入可大大提高配合物的荧光强度。结果表明,配体的三重态能级与稀土离子的激发态能级匹配。更多还原

【Abstract】 Ten solid binary complexes of rare earth perchlorate with 2-thiophene carboxylic acid（L） and foure ternary complexes of rare earth perchlorate with 2-thiophene carboxylic acid（L）-2,2’-bipyridine（L ）have been synthesized.By elecmental analysis,rare earth coordination titration and DTG studies.the composition of the complexes were suggested as REL₃·2H₂O（RE=Y,La,Pr,Nd,Sm,Eu,Gd,Tb,Dy, Er） and REL₃L’·C₂H₅OH（RE=Sm,Eu,Tb,Dy） respectively.IR spectra and 1HNMR studies indicate that the ligands coordinate with rare earth by the oxygen atoms of 2-thiophene carboxylic acid and nitrogen atoms of 2-2’-bipyridine .The Molar conductivities in DMF solvent indicate that the complex are nonelectrolyte. Fluoresence spectra of Eu³⁺ and Tb³⁺ complexes show that ligands have a strong sensitization effect on fluorescence of Eu³⁺.Otherwise,the fluorescence emission intensity of ternary complexes have been enhanced strongly by 2,2’-bipyridine in mixing.The results show that the triplet state energy of the ligand is most matching with the excitated state energy of rare earth ions.更多还原