具有螺旋结构的双β-二酮稀土配合物的圆偏振荧光研究

项目名称： 具有螺旋结构的双β-二酮稀土配合物的圆偏振荧光研究

项目编号： No.51302068

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 一般工业技术

项目作者： 李洪峰

作者单位： 黑龙江大学

项目金额： 26万元

中文摘要： 手性稀土配合物是一类重要的圆偏振荧光(CPL)材料。但由于不能很好兼顾配合物的发光效率和圆偏振度这两个影响CPL性能的主要因素, 目前用于圆偏振荧光研究的手性稀土配合物的CPL性能仍不能令人满意。因此，合成兼具高荧光效率和高CPL活性的稀土配合物仍是圆偏振发光材料研究领域所需解决的核心问题。本项目拟采用手性基团修饰具有高稀土敏化效率的双β-二酮配体合成一系列具有单一螺旋手性的双核稀土配合物，并围绕影响配合物螺旋结构和CPL发光性能的因素，如配体的种类、取代基的位置、配体的能级、螺旋结构的刚性、螺旋半径的大小、螺旋的匝数等展开研究。揭示配合物的结构及螺旋要素与CPL性能之间的关系。该项研究如能达到目标，将突破手性稀土配合物不能同时兼顾高发光效率和高CPL活性的瓶颈，并开发出性能优良的、具有潜在应用价值的CPL材料。

中文关键词： 稀土配合物；双-β-二酮；手性；圆偏振荧光；

英文摘要： Chiral lanthanide complexes is a series of excellent materials with intriguing circularly polarized luminescence (CPL). Unfortunately, the lanthanide complexes, which have been extensively investigated in the current research, fail to satisfy the acquirement of both the high luminescent yield and high CPL activity. However, few studies have been performed on the syntheses, structures and the CPL properties on the helical dinuclear lanthanide complexes, although they are featured by its chiral nature and high luminecent yield, which would indicate their promise future as the CPL materials. In this project, we would like to employ chiral diketones as the compartmental ligands so as to synthesize a series of chiral dinuclear lanthanide complexes with high fluorescent yield and high CPL activity. And we would also like to further investigate the potential factors on the relationship of the chiral helical structures and the CPL behavior, such as the nature of the ligands, the substitutions and their positions, energy levels, the radius and strands of the helixes etc. More scientific data on the syntheses and structures of the chiral helical lanthanide complexes could be obtained, and therefore detailed comparisons could be therefore made so as to address the relationship of CPL behavior and the structural nature of

英文关键词： Lanthanide complexes；bis-β-diketone；chirality；CPL；