新型多β-二酮类配体构筑高效荧光稀土配位聚合物的研究

项目名称： 新型多β-二酮类配体构筑高效荧光稀土配位聚合物的研究

项目编号： No.21501122

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 数理科学和化学

项目作者： 熊刚

作者单位： 沈阳化工大学

项目金额： 20万元

中文摘要： 稀土有机配合物是一类在光致发光和电致发光等领域具有潜在应用价值的荧光材料，其外量子效率低、紫外光耐受性差和热稳定性差等缺陷是亟待解决的关键问题。本研究结合β-二酮类稀土配合物的高效荧光优势与配位聚合物的高稳定性等优点，设计、合成多系列以新颖多β-二酮类配体构筑的稀土配位聚合物；本研究把基础理论知识研究与应用研究相结合，首先通过测定配体的单线态和三线态来讨论配位聚合物内能量传递过程与发光机理，再根据三线态与稀土离子激发能级的匹配状态筛选出对稀土离子敏化效率高的多β-二酮配体；通过测试稀土配位聚合物的荧光寿命、颜色参数、亮度参数、外量子效率、耐热和紫外光等测试来探寻实用性较强的荧光材料。利用晶体工程手段，合成不同维数、密堆积程度和发光离子含量的配位聚合物，探索结构与热稳定性、耐紫外光性和荧光效率之间的关系。该项工作的开展对更多新型荧光材料的研发提供有价值的实验数据和实例。

中文关键词： 稀土；荧光材料；β-二酮配体；配位聚合物

英文摘要： Rare earth-organic complexes as a kind of important luminescent materials, which can be potentially applied in the fields of photoluminescence and electroluminescence, should be addressed some vital defects such as low external quantum efficient, poorly UV and thermal resistance. This study aims at combining high efficient luminescent of rare earth β-diketone complexes and high stability of coordination polymers via designing and synthesizing series of rare earth coordination polymers constructed by new multi β-diketone ligands. This study combined the basic theory and application researches. On the hand, we focus to discuss the processes of energy transfer and luminescence mechanisms within coordination polymers by measuring the singlet and triplet of ligands, and then sift the high sensitization efficiency ligands to rare-earth ions judging from the match state between triplet of ligands and excited state of rare-earth ions. On the other hand, we intended to explore potential practical luminescence materials via testing fluorescence life, color and brightness parameters, external quantum efficiency, thermal and UV resistance of rare earth coordination polymers. By the method of crystal engineering, we will synthesize coordination polymers possessing different dimensions, the close packing degrees and contents of luminescence ions to explore the relationships between structure and luminescence efficiency, thermal stability and UV resistance. This work can provide valuable experimental data and projects for developing more practical luminescence materials.

英文关键词： Rare-earth; Luminescent materials;β-diketone ligands;coordination polymers