基于稀土配位聚合物的新型高效荧光材料的构筑、可调的发光性质及白光发射

项目名称： 基于稀土配位聚合物的新型高效荧光材料的构筑、可调的发光性质及白光发射

项目编号： No.21471104

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 数理科学和化学

项目作者： 李夏

作者单位： 首都师范大学

项目金额： 85万元

中文摘要： 构建高发光效率的荧光发光材料仍然是新型材料研究领域的难点和热点。本研究主要是以稀土离子作为发光中心，选择富含F和富含N有机配体作为辅助发光基团，合成结构新颖的稀土配位聚合物以期筛选新型高发光效率的荧光发光材料。分析配合物的晶体结构并表征其热稳性等相关性质。以探讨稀土离子的荧光发光为中心，研究配体和配合物的结构与发光性质的关系，获得高发光效率的发光配合物。在此基础上，我们将进一步通过稀土离子掺杂的手段实现掺杂稀土配合物的发光性质的调控和白光发射。研究掺杂配合物的发光性质、色纯度以及稀土离子之间的能量转移机制，分析研究不同掺杂稀土离子及不同掺杂摩尔浓度的配合物发光。基于配体的设计和合理选择金属离子，实现高效单组份稀土配合物或异金属(f-d)配合物的直接白光发射，并使颜色的色坐标、显色指数，色温达到固体发光材料颜色的需求。本研究将为稀土配合物作为白光发射材料的潜在应用提供实验和理论基础。

中文关键词： 稀土配位聚合物；晶体结构；发光；掺杂；白光发射

英文摘要： Construction and fabrication of highly effective luminescent materials is still a big challenge in the research field of material science. We will focus our research on the construction and fabrication of rare earth (RE(III)) coordination polymers with RE(III) metal as main luminescence center and F-rich and N-rich ligands as auxiliary luminescence groups to screening novel highly effective luminescent materials. The F-rich and N-rich ligands will be firstly design and synthesized or selected. After solvothermal reaction with rare earth (RE(III)) metal, a group of rare earth (RE(III)) coordination polymer will be synthesized, and then the crystal structures, thermal stabilities will be studied. Luminescence property as the most important property of the complexes will be investigated in detail, such as surveying the photoluminescence of the complexes, exploring the influence of the ligands on the luminescence of the complexes and trying to obtain the relation between the ligands and synthesized rare earth (RE(III)) luminescence coordination polymers. Based on these preliminary research, the means of the RE(III)-doped approach will be tried to modulate the luminescence properties of the obtained complexes, and ultimately to achieve the goal of white-light emission. The luminescence properties, the quality of the white light and the energy transfer mechanism between different RE(III) ions will be investigated. The influence of different dopants and the doping concentration of RE(III) ions on the luminescence of the doped complexes will be also explored. Thus, based on the rational design of F-rich and N-rich ligands and carful selection of metal ion, high-efficiency white-light emitting materials of the rare earth single-metal complexes or f-d heterometallic complexes will be prospectively obtained. The CIE(Commission Internationale de l'Eclairage) chromaticity coordinates, color rendering index(CRI) and correlated color temperature(CCT) of these high-efficiency white-light emitting materials can meet the requirement of the color properties for solid-state lighting (SSL). Moreover, the work will provide experimental results and theoretical basis for white-light emitting materials based on rare earth coordination polymers in promising practical applications.

英文关键词： Rare earth coordination polymer;crystal structure;luminescence;doped;white-light emission