An easily accessible switch-on optical chemosensor for the detection of noxious metal ions Ni(II), Zn(II), Fe(III) and UO2(II)

- Synthesized the easily accessible switch-on optical chemosensor for multi-ions.
- More than 15-time naked-eye fluorescent enhancement was observed with Zn(II) ions.
- The detection limit of Ni(II), Zn(II), UO2(II) and Fe(II) by the optical probes is in the ppb range.