“…Notably, luminescent metal complexes (with Ru 2+ , Fe 3+ , Zn 2+ , etc.) with polypyridine ligands, such as 2,2′-bipyridyl (bpy) or 1,10-phenanthroline (phen), have received a significant amount of attention recently as responsive photofunctional materials. − In particular, the unique photophysical properties of Ru(II) polypyridyl complexes include broad absorption maxima, reversible redox properties, large Stoke shifts, etc. − In addition, high water solubility and biocompatibility make these probes a useful “photoswitching material” for biomolecules, such as DNA, protein, etc. − Our findings present a unique instance in which a luminescent probe has been utilized for the detection and quantitative analysis of SLNPV via a color-changing response. Interestingly, the freshly prepared SLNPV has been differentiated from its storage-old analogues and other biopesticides.…”