Radical qubits photo-generated in acene-based metal–organic frameworks

Abstract

A series of metal–organic frameworks (MOFs) assembled with diazatetracene (DAT)-based linkers were synthesized and characterized. Despite different chromophore orientations and spacings, photoinduced persistent radicals were generated in all the MOFs, and their spin–lattice relaxation time (T₁) and spin–spin relaxation time (T₂) were found to be relatively long even at room temperature. The generality of long T₁ and T₂ values of photogenerated radicals in the chromophore-assembled MOFs provides a new platform towards quantum sensing applications.