Multifunctional luminescent Zn(II)-based metal–organic framework for high proton-conductivity and detection of Cr3+ ions in the presence of mixed metal ions

A luminescent MOF with rectangular channels was synthesized and characterized. It is capable of showing a high proton conductivity up to 0.95 × 10−2 S cm−1 at 60 °C and 97% RH, and sensing metal ions (particularly Cr3+ ions), through fluorescence quenching in presence of mixed metal ions.