【作者】 侯克玲；

【导师】 邢永恒；

【作者基本信息】 辽宁师范大学 ， 无机化学， 2011， 硕士

【摘要】 本论文主要针对混合多羧酸配体为主的系列稀土配位聚合物的合成、结构及其性质进行研究,旨在研究混合多羧酸稀土配合物结构的多样性,热稳定性和荧光特性。本文将对具有新颖构型的有机配体构筑的22种混合多羧酸稀土配位聚合物进行描述和探讨。我们利用X-射线单晶衍射测定了配合物1-22的晶体结构,利用元素分析和红外光谱对配合物进行了表征,并用热分析方法研究了配合物的热稳定性。同时,对Eu,Tb,Sm,Dy配合物的荧光性质进行了系统的研究,并且详细探讨了配合物的结构与荧光性质之问的关系。我们合成的22种配合物的分子式如下所示：注：H4bta=1,2,4,5-均苯四甲酸；HBSA=苯磺酸；H2bdc=1,4-对苯二甲酸；H20x=草酸；H2glu=戊二酸；H2ad=己二酸本文第三章和第四章主要着手研究了在刚性配体不变的情况下,通过引进系列柔性配体作为第二连接体来构筑系列多功能刚柔混合多羧酸稀土配合物。目的在于研究混合多羧酸稀土配合物在含有相同刚性配体时,不同柔性配体对配合物的结构、荧光及热分解性质等的影响。我们在传统的“刚柔”体系的设计理念启发下,尝试设计“刚刚”体系期望得到结构新颖发光性能更好的稀土配合物。本文第五章中我们合成了几例刚刚混合多羧酸稀土配合物,并且探讨了刚刚混合配体对配合物荧光性质的影响。更多还原

【Abstract】 The synthesis, structures and properties of multi-functional lanthanide coordination polymers based on the construction of mixed polycarboxylate-containing ligands are our mainly work. The aim is to study the structural variety, the thermal stabilities and the fluorescence of mixed-polycarboxylate lanthanide coordination polymers. In the paper,22 lanthanide polycarboxylate polymers constructed from different novel organic ligands were described and discussed in detail. The structures of the complexes 1-22 were determined by the X-ray crystal diffractometer. All complexes are characterized by elemental analysis and IR spectrum. The thermal stabilities for some complexes were also analysized. For the complexes regarding Eu, Tb, Sm and Dy, we have a systematic investigation of the photoluminescence for them and also discuss the relationship between the structure and the photoluminescence properties. The chemical formulas of 22 complexes are as following: Note:H4bta = 1,2,4,5-Benzenetetracarboxylic acid; HBSA = benzene sulfonic acid; H2bdc =1,4-benzene-dicarboxylic acid; H2ox= oxalic acid; H2glu= glutaric acid; H2ad= adipic acidIn chapter three and four, we investigate the mixed-polycarboxylate lanthanide coordination polymers with novel structure and unique properties which were constructed from the same rigid ligand and three different flexible ligands. The aim is to discuss the effection of different flexible ligands on the conformation, photoluminescence properties and thermal stabilities of these complexes when the rigid linker is the same. Encouraged by the tranditional design notion of Ln+R+F(R = rigid ligand, F = flexible ligand), we have attempted to design some Ln+R+R complexes formed by two rigid-polycarboxylate ligands inorder to obtain lanthanide complexes with novel structure and higher photoluminescence efficiency. In chapter five, Some Ln+R+R complexes have been synthesized and the inflence of the mixed-rigid ligands on the photoluminescence properties have also been discussed.更多还原