Efficient ionic liquid extraction systems with intramolecular synergistic effect and application to metal ion sensing based on luminescence

本研究的目的是以离子液体为萃取剂，基于溶剂萃取法对有害金属离子进行去除和发光检测。本研究合成了一种新型的含发光8-喹啉衍生物的双氮杂冠醚萃取剂，由于离子液体对Cd~(2+)和Gt~(2+)的分子内协同作用，使其对Cd~(2+)和Gt~(2+)具有较高的萃取性能。此外，该萃取剂通过与Cd~(2+)形成络合物而改变了光谱特性，从而实现了对Cd~(2+)&Gt；浓度的定量检测。

The aim of this research is removal and luminescence detection of harmful metal ions based on solvent extraction using ionic liquids as extracting media. In this study, a novel extractant diazacrown ether bearing luminescent 8-quinolinol derivative was synthesized, and provided high extraction performance for Cd^<2+> due to an intramolecular synergistic effect on the ionic liquid extraction. Furthermore, the spectroscopic characteristic of this extractant changed through the complex formation with Cd^<2+>, which enabled the quantitative detection of Cd^<2+> concentration.