Antenna-functionalized dendritic β-diketonates and europium complexes: synthetic approaches to generation growth
作者:Shangfeng Li、Weihong Zhu、Zhongyu Xu、Jianfeng Pan、He Tian
DOI:10.1016/j.tet.2006.03.052
日期:2006.5
carbazole units. Different approaches to generation growth were utilized: the first generation europium complexes through etheral connectivity were developed via convergent synthetic approach; the second and third generation dendrons through esteral connectivity were developed by a hyperbranch core approach containing the advantages of convergent and divergent approaches. Their chemical structures
合成了六个树突状β-二酮酸酯及其相应的euro配合物。这些树突状β-二酮酸酯配体由二苯甲酰基甲烷核,弗雷谢特型聚(芳基醚)树突和咔唑接枝的外围官能团组成。由于高消光系数和咔唑单元的载流子注入调节,树枝状聚合物的设计是基于高光收集能力和树枝状分子官能化的。利用了不同的世代生长方法:通过聚合合成方法开发了通过醚连接的第一代euro配合物;通过酯键连接的第二和第三代树突是通过超分支核心方法开发的,该方法包含了收敛和发散方法的优点。它们的化学结构已被很好地表征。初步结果表明,树枝状官能化的咔唑单元不仅可以调节载流子的传输能力,而且还具有很强的光收集潜力,从而通过敏化作用从中央Eu(III)离子产生强烈的强发射。