“…Nowadays, rapid detection of metal ions and nitroaromatic compounds (NACs) has attracted much attention because of their importance for environmental safety and homeland security. [1][2][3][4] Among different metal ions, Cu 2+ ion is one of the most essential ions in living biosystems, especially in the brain. 5 Both deciency and overload of copper may cause some types of severe diseases, for instance hematological manifestations, Alzheimer's, and Wilson's diseases.…”