【作者】 燕来；

【导师】 赵永亮；

【作者基本信息】 内蒙古大学 ， 无机化学， 2004， 硕士

【摘要】 本文合成了以RE³⁺(Sm³⁺、Eu³⁺、Tb³⁺、Dy³⁺)以及Tb³⁺：Ln³⁺(La³⁺、Gd^3+、Y3+为中心离子，以对叔丁基杯[8]芳烃（LH₈）为配体的二十一种稀土固体配合物。对配合物进行了C、H、N，稀土元素和热谱分析，结果表明同核配合物的组成分别为：RE（LH₆）（NO₃）（DMF）₄]3DMF、[RE₂（LH₂）（DMSO）₅]DMSO、[RE₂（LH₂）（DMF）₅]2DMF；1：1型掺杂配合物的组成分别为：Ln_0.5Tb_0.5（LH₆）（NO₃）（DMF）₄]3DMF、[LnTb（LH₂）（DMSO）₅]DMSO、[LnTb（LH₂）（DMF）₅]2DMF。 摩尔电导率表明，所有配合物均为非电解质；红外光谱及核磁共振氢谱表明，对叔丁基杯[8]芳烃通过酚羟基的氧原子与稀土离子配位；硝酸根为双齿螯合配位；DMF和DMSO则分别通过羰基氧和亚砜基氧与稀土离子配位；配合物的荧光光谱表明，所有Tb（Ⅲ）的配合物具有较强的特征荧光，掺杂La³⁺、Gd³⁺、Y³⁺离子对Tb³⁺的荧光有较强的增强作用。本文还讨论了中性配体和掺杂离子对其荧光性质的影响。部分配合物荧光衰减与荧光寿命的测量结果表明，配合物荧光寿命的变化与其荧光强度的变化规律一致，即荧光强度强者其荧光寿命也长。更多还原

【Abstract】 Twenty one solid coordination compounds of rare earth (Sm3+. Eu3+. Tb3+. Dy3+) and Tb3+ doped with Ln3+ (La3+ Gd3+ Y3+) with p-tert-Butyl calix[8]arene (LH8) have been synthesized and characterized. Elemental analysis, rare earth complexometry, 1HNMR spectra and TG-DTA have been studiedo The results suggest that the complexes have the composition of [RE(LH6) (N03) (DMF)3DMF. [RE2(LH2) (DMSO)5]DMSO. [RE2(LH2) (DMF)5]2DMF. Lno.5Tb0.5(LH6) (N03) (DMF)4]3DMF. [LnTb(LH2) (DMSO)5]DMSO and [LnTb(LH2) (DMF)5]2DMF respectively. The Molar conductivity indicates that all the complexes are nonelectrolyte. IR spectra show the ligand is bonded with RE (III) ion through its oxygen atom in hydroxyl group of phenol; NO3 is coordinated as a symmetrical chelating bidentate group; the coordinated atoms of DMF and DMSO are the oxygen atoms in carbonyl and sulfoxyl groups. Fluorescence spectrum suggests that the Tb3+complexes have characteristic luminescence and its fluorescence intensity is enhanced after doping with La3+, Gd3+, Y3+, influence of doping ions and neutral ligands have also been discussed. In addition, fluorescence lifetime of some complexes has been investigated. The results indicate that the variation of fluorescence lifetime coincides with its fluorescence intensity, that is to say, the stronger the fluorescence intensity, the longer the fluorescence lifetime.更多还原