Monitoring its levels is essential for both industrial process control and environmental regulation. Additionally, while zinc is vital for biological processes, ZnCl2 can be toxic and corrosive at high concentrations, making it important to monitor its presence for public health and safety reasons. Although there are plenty of studies on the detection of Zn 2+ , motivated by its importance in various biological processes, there have been few reports of an optical sensor specifically designed for the detection of ZnCl2. Manandhar et al. reported a pyrene-based triazole receptor (pyrene-derived molecule), which formed self-assembled induced excimers upon the addition of ZnCl2. The Pyrene-derived molecule showed two distinct emission bands emanating from monomers and excimers. This compound, however, provided a spectral response for other Zn 2+ salts and was not specific for the detection of ZnCl2. Sabarinathan et al. reported selective colorimetric sensing of ZnCl2•2H2O by the polyoxometalate-salt (POM-salt). The addition of ZnCl2•2H2O into a mixture of POM-salt in DMSO-H2O resulted in the formation of blue color; notably, anhydrous ZnCl2 did not produce the color change under the same conditions. To the best of our knowledge, these are the only two optical sensors for ZnCl2 that have been reported to date.