A simple amide fluorescent sensor based on quinoline for selective and sensitive recognition of zinc(II) ions and bioimaging in living cells

A simple quinoline-based derivative (AQDPA) was developed as a highly efficient fluorescent sensor for detecting Zn2+ with obvious fluorescence enhancement over other common metal ions, and the resulting complex AQDPA-Zn2+ was also determined to act as a cascade sensor for recognizing pyrophosphate (PPi) and S2−.267