Siderophore inspired tetra- and octadentate antenna ligands for luminescent Eu(III) and Tb(III) complexes
作者:Lena J. Daumann、Philipp Werther、Michael J. Ziegler、Kenneth N. Raymond
DOI:10.1016/j.jinorgbio.2016.01.006
日期:2016.9
chromophores in Eu(III) and Tb(III) luminescence, we designed three new ligands bearing both chromophores. Syntheses of the octadentate ligands 3,4,3-LI-IAM-1,2-HOPO and 3,4,3-LI-1,2-HOPO-IAM, where the chromophores are attached to different positions in the (LI = linear) spermine backbone, are reported in addition to a tetradentate ligand based on 1,5-diaminopentane. The Gd(III) complexes were prepared
继铁载体启发的1,2-羟基吡啶酮(HOPO)和2-羟基异邻苯二甲酰胺(IAM)发色团在Eu(III)和Tb(III)发光中获得成功后,我们设计了三个带有两个发色团的新配体。八齿配体3,4,3-LI-IAM-1,2-HOPO和3,4,3-LI-1,2-HOPO-IAM的合成,其中发色团连接到(LI =除了基于1,5-二氨基戊烷的四齿配体之外,还报道了线性的精胺主链。制备了Gd(III)配合物,并揭示了IAM和HOPO生色团的典型三重态。Eu(III)和Tb(III)配合物的光物理特征表明,发色团必须驻留在精胺骨架的伯胺上才能有效地激发镧系元素。