Bright Mono-aqua Europium Complexes Based on Triazacyclononane That Bind Anions Reversibly and Permeate Cells Efficiently
作者:Stephen J. Butler、Brian K. McMahon、Robert Pal、David Parker、James W. Walton
DOI:10.1002/chem.201301273
日期:2013.7.15
determination of this anion in human serum, with Kd=37 mM (295 K). The complexes are internalised quickly into mammalian cells and exhibit a mitochondrial localisation at early time points, migrating after a few hours to reveal a predominant lysosomal distribution. Herein, we report the synthesis and complexation behaviour of strongly emissive europium (III) complexes that bind oxy‐anions in aqueous media
由七齿的N 5 O 2配体制备了一系列五种euro(III)配合物,这些配体在λ = 330–355 nm范围内激发后在水中的亮度超过10 m M -1 cm -1。已经通过发射光谱滴定分析评估了几种氧阴离子的结合,其中简单的羧酸根,乳酸根和柠檬酸根的结合在配位水置换后涉及共同的连接模式。碳酸氢根的选择性可以快速测定人血清中的该阴离子,K d = 37 m M(295 K)。复合物迅速内化到哺乳动物细胞中,并在早期时间点显示线粒体定位,几个小时后迁移,显示出溶酶体的主要分布。本文中,我们报道了强发射性((III)配合物的合成和络合行为,该配合物在水性介质中与氧阴离子结合,具有与以前研究的系统截然不同的亲和力和选择性。