Hidayah, N. and Purwono, B. 2023. A Turn-off Fluorescent Chemosensor for Detecting Formaldehyde Based on Pyridine Derivative. al Kimiya: Jurnal Ilmu Kimia dan Terapan. 10, 2 (Dec. 2023), 107–113. DOI:https://doi.org/10.15575/ak.v10i2.25573.