Ionic covalent organic framework for selective detection and adsorption of TcO4-/ReO4-

Herein, a novel fluorescent ionic covalent organic framework (BTTA-BDNP) based on a linked carbazole unit was constructed for the synchronous monitoring and capture of TcO4-/ReO4-. BTTA-BDNP has a fast fluorescence response time with a low detection limit (66.7 nM) for ReO4- (a non-radioactive substitute for TcO4-). Meanwhile, the high charge density and hydrophobic skeleton of BTTA-BDNP enable it to exhibit rapid and selective trapping of ReO4- in complex environments.

Automated summary

A novel fluorescent ionic covalent organic framework (BTTA-BDNP) based on a linked carbazole unit was developed for the simultaneous monitoring and capture of TcO4-/ReO4-. BTTA-BDNP demonstrated a rapid fluorescence response with a low detection limit (66.7 nM) for ReO4- (a non-radioactive substitute for TcO4-). Moreover, BTTA-BDNP exhibited excellent selectivity and efficiency in trapping ReO4- in complex environments due to its high charge density and hydrophobic skeleton.