Used as a ligand in coordination chemistry to form metal complexes with transition metals, particularly ruthenium, iron, and zinc. These complexes exhibit interesting photophysical and electrochemical properties, making them suitable for applications in organic light-emitting diodes (OLEDs) and dye-sensitized solar cells (DSSCs). The presence of the nitrophenyl group enhances electron-accepting ability, improving charge transfer characteristics in optoelectronic devices. Also employed in the development of chemosensors due to its ability to selectively bind metal ions in solution, enabling detection of environmental pollutants or biological species. Its rigid terpyridine backbone supports the formation of stable supramolecular architectures used in molecular self-assembly and nanotechnology.