Ratiometric dual-emitting MOF⊃dye thermometers with a tunable operating range and sensitivity

A tetracarboxylic acid ligand containing a highly polarized benzothiadiazole moiety was designed and used to construct the luminescent porous MOFZJU-21, which can efficiently absorb the luminescent dye DMASM into the pores as well as sensitize it, yielding a dual-emitting MOF⊃dye compositeZJU-21⊃DMASM.