The complex [Ru(tpy)(bpy)(MeO-py)]2+, where tpy = 2,2';6',2"-terpyridine, bpy = 2,2'-bipyridine, and MeO-py = 4-methoxypyridine, was synthesized and the effect the electron donating methoxy group has on the ground and excited state properties of the complex was investigated and compared to a previously synthesized complex, [Ru(tpy)(bpy)(py)]2+, where py = pyridine. A detectable red shift is observed in the electronic absorption and emission spectra of [Ru(tpy)(bpy)(MeO-py)]2+ as compared to [Ru(tpy)(bpy)(py)]2+. These data show that the electron donating methoxy group located in the para position of the pyridine ring has a slight destabilizing effect on the Ru(dp) t2g-type orbitals.

Synthesis and characterization of ground and excited state properties of a new ruthenium(II) polypyridine complex

249th National Meeting (2015)

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