A redox-active chromophore grafted within the microenvironment of a metal–organic framework recognizes aromatic amine isomers

Abstract

Grafting a redox-active chromophore into a Zr-based metal–organic framework, MOF-808, yields a fluorescent porous solid capable of discriminating aromatic amine isomers. Within the confined microenvironment of MOF-808, the incorporated redox-active chromophore exhibits distinct redox responses and photophysical signatures upon interaction with different amine isomers. This study highlights the role of confinement in enabling the molecular recognition feature in porous solids.