Advances in Anion Sensing Using Dipyrromethane-Based Compounds

Anion sensing plays a crucial role in areas ranging from medical diagnostics to environmental monitoring. Dipyrromethane-based compounds offer a versatile platform for developing colorimetric and fluorescent chemosensors, owing to their structural tunability and favorable optical properties. This review provides a concise overview of current advancements in anion sensing using dipyrromethane molecular framework. We examined the diverse strategies employed in designing dipyrromethane-based anion sensors. Emphasis is placed on the structure-function relationships that dictate anion affinity and selectivity. Key sensing mechanisms, including visual detection, UV-vis studies, NMR studies, and fluorescence modulation, are explored. Finally, the synthetic routes for the synthesis of chemosensors are mentioned in detail. Given the efficiency and flexibility of dipyrromethane-based sensor, we believe that major developments are to be expected in the field of both sensor and analytical chemistry.