摘要

A fluorescent sensor L, which showed turn-on response towards Cd2+ with a detection limit of 1.9 x 10(-12) mol L-1 in acetonitrile-H2O buffer solution based on the PET process and turn-off response toward Cu2+ with a detection limit of 4.9 x 10(-9) mol L-1 in pure water at pH 3.5 based on electrostatic effects, was developed.