Tactile Sensors: Hydroxyl Decorated Silver Metal-Organic Frameworks for Detecting Cr 2 O 7 2- , MnO 4 - , Humic Acid, and Fe 3+ Ions.

Anionic, acidic, and metal ions are common contaminants in water and cause serious concerns for human and aquatic life. With the goal of rapid detection of analytes, we herein design a new array of ligand 5-(4 H -1,2,4-triazol-4-yl)pyridin-3-ol-linked silver coordinated metal-organic frameworks Ag-MOFs as a promising sensor for Cr 2 O 7 2- , MnO 4 - , humic acid (HA), and Fe 3+ ions down to the micro level. Furthermore, as evidenced by luminescence, excitation-emission matrix (EEM) spectroscopic, and PXRD measurements, designed metal-organic frameworks (MOFs) can be fast, stable, and reusable for analyte detection in water.