Abstract
A series of luminescent carbonyl hydrido ruthenium(II) complexes with various diimine ligands with diverse electronic properties, including Me2bpy (bpy = bipyridine), Me2phen (phen = phenanthroline), PhenCOOH, PhenCN, Me2Ph2phen, Ph2phen, and π‐conjugating dipyrido[3,2‐d:2′,3′‐f]quinoxaline (dpq), dipyrido[3,2‐a:2′,3′‐c](6,7,8,9‐tetrahydro)phenazine (dpqc), and dipyridophenazine (dppz) have been synthesized and characterized. Four of these complexes have been structurally characterized by X‐ray crystallography. The photophysical and electrochemical properties of these complexes have been studied. The effects of the electronic features and π‐conjugation of the diimine ligand on the electronic and photophysical properties of these complexes have also been discussed. Our study revealed that the luminescence performance of these complexes could be significantly enhanced by increasing the rigidity and π‐conjugation of the diimine ligand.
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