有机配体结构与稀土离子铽发光性能关系的研究本科.docVIP

沈阳化工大学 本科毕业论文 题 目：有机配体结构与稀土离子铽发光性能关系的研究  毕业设计（论文）任务书 应用化学专业 0902 班 学生：高婷婷 毕业设计（论文）题目：有机配体结构与稀土离子铽发光性能关系的研究 毕业设计（论文）内容：通过选择不同的有机配体，在适当的操作条件下与稀土离子铽合成配合物，研究其发光性能与配体结构的关系；通过X-射线衍射测试结构。X-射线衍射℃烘箱中烘干，所得产物亮度较好。 产物也进行了多项性能测试，红外光谱测试主要确定了产物的结构，确定为目标产物 ，也为研究对比配合物发光性提供一定依据，在溶解性实验中发现产物在N,N-二甲基甲酰胺中的溶解性较好，在丙酮和乙醇中部分溶解，通过热重判断物质的热稳定性，荧光测试发现对甲基苯甲酸配合物发光强度最强。这些数据均为以后的分析提供参考。 关键词：稀土，稀土铽配合物，结构表征，性能分析 Abstract Rare earth elements is third subgroup element in the periodic table include scandium、yttrium and lanthanum metal. their have excellent physical and chemical properties in general, because of their application in theoptical, electrical , magneticfields and other fields , it has caught peoples attention in recent years . Especially in the synthesis of rare earth luminescent material, the synthetic product has good stability, high luminance, has attracted great interest to study. This paper mainly to study the luminescence properties and the structure of the rare earth terbiumˊs complexes which compose with ligand through by choosing different organic ligands . The main research route as follows: 1. Using the drug Tb4O7 to preparation Tb3+; 2. Using different organic ligands with Tb3+, adjacent phenanthroline synthesis of ternary complexes; 3. Using different testing methods such as infrared spectrum, X-ray diffraction , and analysis of complexes with different ligands how to influence the luminous intensity. In this experiment, four kinds of complexes have been synthesized .And four kinds of acid have been used ,include of citric acid, salicylic acid, oxalic acid, p-Toluylic acid. Through trial and error, we found the best reaction temperature : because of the reaction by using ethanol as reaction medium, the reaction temperature should be higher than the boiling point of ethanol; we also found the appropriate PH value:adjusting Ph higher than 8 but less than 11, otherwise there is gel phenomenon wound appear, after the reaction, the product had better add just the ri