The construction of fluorescent heteropore covalent organic frameworks and their applications in spectroscopic and visual detection of trinitrophenol with high selectivity and sensitivity

Two fluorescent covalent organic frameworks (COFs) which bear two kinds of pores with different sizes and shapes have been synthesized. The heteropore COFs exhibit spectroscopic and color changes to 2,4,6-trinitrophenol (TNP) with extremely high selectivity and sensitivity, which makes them excellent macroscopic chemosensors for the selective detection of TNP.