Graphdiyne nanosheets as a platform for accurate copper(<scp>ii</scp>) ion detection <i>via</i> click chemistry and fluorescence resonance energy transfer

Abstract

A novel sensing platform for sensitive detection of copper(ii) ions (Cu²⁺) in living cells and body fluids was developed by taking advantage of the excellent fluorescence quenching ability of graphdiyne (GDY) and the high specificity of click chemistry for the first time.