TQEN骨格を基盤とするキノリン誘導体を用いた金属イオンおよびピロリン酸の蛍光検出

抄録

Fluorescent detection of specific metal ions with organic ligands is an attractive subject in coordination chemistry. This account summarizes the evolution history of fluorescent metal sensor TQEN (N,N,N’,N’-tetrakis(2-quinolylmethyl)ethylenediamine), which is a TPEN (N,N,N’,N’-tetrakis(2-pyridylmethyl)ethylenediamine)-based hexadentate ligand responding to zinc and cadmium ions. The dim fluorescence intensity and insufficient Zn/Cd selectivity of TQEN have been effectively improved by changing the ligand structure. Mercury and pyrophosphate ions are also targeted by rational modification of the molecule.