An efficient chloride-selective fluorescent chemosensor based on 2,9-bis(4′-hydroxyphenyl)phenanthroline Cu(II) complex

A new complex Cu(II)/L, composed of 2,9-bis(4′-hydroxyphenyl)phenanthroline (L) and Cu(II), was synthesized as an efficient chloride-detection fluorescent chemosensor with high selectivity and sensitivity over other halide anions, F−, Br−, I−. The recognition mechanism was discussed primarily.