Luminescent bis-tridentate ruthenium(ii) and osmium(ii) complexes based on terpyridyl-imidazole ligand: synthesis, structural characterization, photophysical, electrochemical, and solvent dependence studies
of bisterpyridine-type ruthenium(II) and osmium(II) complexes. The X-ray crystalstructures of two homoleptic complexes 3 and 4 have been determined and show that both the compounds crystallized in orthorhombic form with space group Fddd. The photophysical and redox properties of the complexes have been thoroughly investigated. All the complexes display moderately strong luminescence at room temperature
the anion and cation binding properties of the receptor were thoroughly investigated in dimethylformamide-acetonitrile (1 : 9) solution using absorption, emission, and 1H NMR spectral studies which revealed that the receptor acts as a sensor for both F− and Fe2+. In the presence of excess F− ion, deprotonation of the imidazole N–H fragment of the receptor occurs, an event which is signaled by the development