Rapid and specific luminescence sensing of Cu( ii ) ions with a porphyrinic metal–organic framework

We herein present a porphyrinic metal-organic framework (MOF) as a highly sensitive fluorescent probe targeting Cu(ii) ions with a fast response. The well-isolated nature of porphyrin moieties within the framework greatly enable accessible recognition sites, which leads to an outstanding detection limit performance of 67 nM among MOF-based materials.