The synthesis of alkynefunctionalized bipyridine ruthenium complexes are reported. The improved synthetic approach through application of stable protecting groups prevents formation of possible side products while facilitating purification. By applying copper‐catalysed azide‐alkyne cycloaddition reactions (CuAAC) pyrene units with flexible alkyl linkers are introduced at the periphery of the complex
Facile and Reliable Emission‐Based Nanomolar Anion Sensing by Luminescent Iridium Receptors Featuring Chelating Halogen‐Bonding Sites
作者:Robin Kampes、Ronny Tepper、Helmar Görls、Peter Bellstedt、Michael Jäger、Ulrich S. Schubert
DOI:10.1002/chem.202002738
日期:2020.11.17
An anion sensor is presented that combines a bidentate hydrogen‐ (HB) or halogen‐bonding (XB) site with a luminescent monocationic Ir fragment for strong binding of common anions (Ka up to 6×104 m−1) with diagnostic emission changes. A new emission‐based protocol for fast and reliable detection was derived on the basis of correction for systematic but unspecific background effects. Such a simple correction
提出了一种阴离子传感器,该传感器结合了双齿氢(HB)或卤素键(XB)位点与发光的单阳离子Ir片段,可对常见阴离子(K a高达6×10 4 m -1)进行强结合并具有诊断性发射变化。在校正系统但非特定背景影响的基础上,得出了一种新的基于排放的协议,用于快速可靠的检测。如此简单的校正程序规避了迄今为止使用经验证的开源软件(BindFit)对阴离子结合进行基于系统发射分析的实际限制。K a的预期顺序根据阴离子的大小和碱度(Cl> Br = OAc)以及受体的供体原子(XB:6×10 4 m -1 > HB:5×10 3 m -1)遵循值在几分钟内导致亚微摩尔的检测极限。通过先进的NMR技术进一步验证了结果,并通过X射线晶体学数据和DFT分析得到了证实,这些结果以极佳的一致性再现了结构和电子特征。结果表明,校正后的基于发射的传感可能会成为一种互补,可靠和快速的工具,这是由于在高稀释度下进行简