手性发光稀土配合物的设计合成、结构调控及性能研究

项目名称： 手性发光稀土配合物的设计合成、结构调控及性能研究

项目编号： No.21461011

项目类型： 地区科学基金项目

立项/批准年度： 2015

项目学科： 无机化学

项目作者： 袁厚群

作者单位： 江西农业大学

项目金额： 50万元

中文摘要： 手性发光稀土配合物在生物化学、医学诊断等方面有广阔的应用前景。然而，稀土离子中心的手性配位环境与其发光性能的关系目前尚不明确。本项目拟用手性含硫氨基酸Schiff碱作为第一配体，以含氮杂环化合物为第二配体，设计合成系列具有发光性能的手性稀土配合物，并确定其晶体结构。利用配体间的相互作用调控稀土离子的手性配位环境，探讨稀土手性配位环境对配合物空间结构及理化性质的影响规律。通过考察配体与稀土配合物的紫外吸收光谱、荧光发射光谱、荧光量子效率、荧光寿命、Stokes位移，研究稀土配合物中配体与稀土离子之间电子跃迁引起的电子转移及能量转移等诸多光物理问题，探讨稀土离子手性配位环境与配合物发光性能的关系，揭示稀土离子手性配位环境对配合物发光性能的影响规律。本项目将为进一步设计和开发新型手性稀土发光材料提供科学依据。

中文关键词： 手性；稀土配合物；结构调控；发光性能

英文摘要： Chiral luminescent lanthanide(III) complexes attract increasing attention as their potential applications in biochemistry, medical imaging diagnosis and etc. However, the relationship between the chiral coordination environments of lanthanide ions and luminescent properties is not clear so far. In this project, chiral S-containing amino acid Schiff Base will be used as the first ligand, and N-heterocyclic compounds will be used as the second ligand to design and synthesize a series of chiral luminescent lanthanide(III) complexes.The crystal structures of lanthanide(III) complexes will be determined; The chiral coordination environments of lanthanide ions will be controlled by the interactions between the ligands, and the effects of the chiral coordination environments on the whole structures and physical and chemical properties of the complexes will be discussed in detail; The UV and emission spectra, emission quantum yield values, fluorescent lifetime and stokes shift of ligands and the complexes will be investigated; The electron and energy transfer between the ligands and lanthanide ions will be studied; The relationship between the chiral coordination environments around lanthanide ions and the luminescent properties of the complexes will be further discussed. The achievement of this project would provide insight view of rules about the chiral coordination environments and luminescent properties of lanthainde ions, and it would also provide valuable data for the design and exploitation of new chiral luminescent lanthanide complexes.

英文关键词： Chiral;Lanthanide Complexes;Structural Control;Luminescent Property