Synthesis and characterisation of phosphorescent rhenium(I) complexes of hydroxy-and methoxysubstituted imidazo[4,5-f]-1,10Abstract Eight new fluorescent ligands (L1-L8) derived from the fused imidazo[4,5-f]-1,10-phenanthroline core, have been synthesised utilising a one-pot methodology. The ligands include two points of structural variety, allowing multiply-substituted aryl groups (including hydroxy and methoxy moieties) to be attached to the ligand core. The ligands L1-L8 are fluorescent (λ em = 399-426 nm) and react with pentacarbonylbromorhenium to give coordination complexes of the form fac-[ReBr(CO) 3 (N^N)] (where N^N = L1-L8). The complexes were characterised using a variety of spectroscopic and analytical techniques, including single crystal X-ray diffraction studies on two examples. The rhenium complexes were all found to be luminescent, revealing classical 3 MLCT emission at 579-587 nm in aerated solution with corresponding lifetimes in the range 149-166 ns.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.