Synthesis, structural characterisation and luminescent anion sensing studies of a Ru(II)polypyridyl complex featuring an aryl urea derivatised 2,2′-bpy auxiliary ligand

► We include a urea functionality into a Ru(II)-polypyridyl complex (Ru·L1). ► We examine changes in photophysical properties of Ru·L1 on addition of anions. ► Luminescence of Ru·L1 is modulated by acetate, phosphate and pyrophosphate. ► Ru·L1 can distinguish between phosphate and pyrophosphate.